Meiosis occurs where no physical contact is required for reproduction and mitosis occurs where offspring are produced from the single parent without physical contact with another mate.
There are two types of cell cycles: Meiosis and Mitosis.Meiosis involves in development of gametes. Mitosis is involved in formation of somatic cells. The somatic cells are involved in development of skin cells.
Therefore, meiosis involves no physical contact and mitosis occurs in single celled organisms.
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Cell division, crucial for organism growth and reproduction, occurs as mitosis or meiosis. Mitosis is a form of asexual reproduction producing identical daughter cells, while meiosis, crucial for sexual reproduction, produces haploid gametes. The answer to the question is: Meiosis is sex-based, and mitosis is asexual.
Explanation:Cell division is essential for the growth, repair, and reproduction of organisms. The two primary forms of cell division in eukaryotic organisms are mitosis and meiosis. Mitosis is the process by which a single cell divides to produce two new daughter cells that are genetically identical to each other and to the original parent cell, ensuring the continuation of cellular function and genetic information in somatic (body) cells. This type of division is a form of asexual reproduction, as it does not involve the combination of genetic material from two different parent cells.
On the other hand, meiosis is a more complex form of cell division that occurs only in the germ cells (sperm and egg cells) within the reproductive organs. Meiosis involves two rounds of cell division, resulting in four daughter cells, each with half the number of chromosomes of the parent cell. This reduction in chromosome number is crucial for sexual reproduction, as it allows for the fusion of a sperm and an egg to produce a fertilized egg with the correct number of chromosomes. Therefore, meiosis is pivotal in the production of gametes for sexual reproduction.
In conclusion, the question "Meiosis is a form of … reproduction and mitosis is a form of … reproduction" is correctly answered as: Meiosis is a form of sexual reproduction, and mitosis is a form of asexual reproduction.
Which of these is a difference between a DNA and an RNA molecule?
A. DNA contains nitrogenous bases, whereas RNA contains phosphate groups.
B. DNA is usually double-stranded, whereas RNA is usually single-stranded.
C. DNA is a polymer composed of nucleotides, whereas RNA is a polymer composed of nucleic acids.
D. DNA contains uracil, whereas RNA contains thymine.
E. DNA contains five-carbon sugars, whereas RNA contains six-carbon sugars.
Answer:
B
Explanation:
DNA is a double-strandard molecule, while RNA is a single-stranded. DNA and RNA base pairing is slightly different since DNA uses the bases adenine, thymine, cytosine, and guanine; RNA uses adenine, uracil, cytosine, and guanine.Uracil differs from thymine in that it lacks a methyl group on its ring.
The difference between DNA and RNA is that DNA is double- stranded while RNA is single stranded.
What is DNA?DNA is a hereditary material which is present in human beings as well as all other living organisms. Every cell which is present in an organism's body has DNA which is the same. Most of the DNA is situated in the cell's nucleus and small amount of it can be found in the cell's mitochondria as well.
Information which is stored in DNA is stored as codes made up of four chemical bases namely, adenine, thymine , cytosine and guanine.Human DNA consists of 3 billion bases .The order of the bases determines information which is required for building and maintaining an organism.
DNA bases are capable of pairing up with each other. Adenine pairs with thymine and guanine pairs up with cytosine .Each base is also attached to a sugar molecule and a phosphate group. A base, phosphate sugar are together called as nucleotides.
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Could you write a paragraph on how
The surface and atmosphere of Earth has been changing constantly throughout its history as a result, organisms continue to evolve to adapt to those changes.
Answer:
The surface and atmosphere of Earth has been changing constantly throughout its history as a result, organisms continue to evolve to adapt to those changes only by evolutionary term.
Explanation:
Survival of the fittest - It refers to the 'survival of organisms' which are best able to 'obtain and utilize' the available resources that results in the 'evolution of organisms' which can adapt to these changes. Survival alone is not sufficient for 'evolution of organisms, it's 'reproduction passing on of genes' that really counts.Which word equation summarizes the hydrolysis of a carbohydrate
The word equation that summarizes the hydrolysis of a carbohydrate is presented in option C, which shows: sucrose + water-glucose + fructose.
What is hydrolysis?
It is a biochemical process.It is the breakdown of molecules through water.The hydrolysis of carbohydrate is an important process through which living beings obtain quick energy for other metabolic processes. As the name suggests, hydrolysis requires water to come into contact with the carbohydrate, sucrose, for example, reacting with the molecule and releasing other molecules.
Full question:
Which word equation summarizes the hydrolysis of a carbohydrate
A. starch + water-glycerol + fatty acids
B. glycerol + fatty acids - triglyceride + water
C. sucrose + water-glucose + fructose
D. amino acids + oxygen
starch + water
Which is considered a household hazardous waste?
A dishwasher detergent
B Oven cleaner
C compost
D light bulbs
Correct answer
A. Dishwasher Detergent
Explanation:
Dangers of Using Dishwashing Detergents will cause multiple carcinogens.
Carcinogens are things that can cause cancer, usually in the form of chemicals, viruses, or even drugs and radiation used to treat cancer itself. In essence, what causes cancer can be called a carcinogen. In general, cancer is caused by carcinogens or a combination of carcinogens themselves. Carcinogens can work in many ways, namely directly damaging DNA in cells, causing abnormalities in normal cells, and another way is by causing cell damage that causes cells to divide more quickly, which in turn can lead to the development of cancer.
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Carciongens https://brainly.com/question/8307428cause of cancer https://brainly.com/question/13153715Details:
Grade: Middle School
Subject: Biology
Keywords: Carciongens, Cancer
Answer:
B : Oven cleaner
Explanation:
What historical data from Tokyo could have helped in the development of Tokyo’s new flood protection system ?
Answer:
This historical data could have helped with the development of Tokyo’s new flood protection system:
historical frequency of floodingamount of flooding during each stormcomputer models forecasting the worst possible floodingExplanation:
Two heterozygous purple flowering pea plants are crossed. If purple is dominant over white, what are the expected phenotypic
results?
Answer:
Purple : white = 3:1
Explanation:
Since the parents are heterozygous each of them will produce 1/2 gametes with the purple allele and 1/2 gametes with white allele.When these will combine after fertilization there is 25% chance that the offspring will be homozygous with dominant allele, 50% chance that the offspring will be heterozygous and 25% chance that the offspring will be homozygous with recessive allele.The homozygous with dominant allele and the heterzygoys offsprings will express the dominant purple trait (25%+50%) and only the homozygous individual with recessive allele will show the white colour.Thus the phenotypic ratio is 3:1.How did Earth's atmosphere become oxygen-rich?
O
A. Volcanic outgassing
O
B. Tectonic movement
O
O
c. Ozone depletion
D. Biological activity
Answer:
D.) Biological activity
Explanation:
I got it correct
The Earth's atmosphere became oxygen-rich through photosynthesis by plants and the evolution of oxygen-producing organisms. Studies show that the atmosphere lacked oxygen until about 2 billion years ago. The increase in oxygen led to the formation of Earth's ozone layer.
Explanation:The Earth's atmosphere became oxygen-rich through the process of photosynthesis by plants and the evolution of photosynthetic and oxygen-producing organisms, such as cyanobacteria. Studies of ancient rocks show that the atmosphere was anoxic, meaning there was no oxygen, until about 2 billion years ago. As the plant population grew, more oxygen was produced and accumulated in the atmosphere, eventually leading to the formation of Earth's ozone layer which provided protection from harmful solar ultraviolet light.
Identify 2 reasons why offspring produced by sexual reproduction have more genetic variety
Answer:
Crossing over and independent assortment
Explanation:
Meiosis can be described as a type of cell division which occurs in the sex cells. All the other cells of the body divide by mitosis.
During the process of meiosis, crossing over and independent assortment of chromosomes takes place which is the reason for the genetic variety produced in offsprings.
During crossing over, exchange of DNA segment between homologous chromosomes occur due to which genetic variations occur.
Also, the chromosomes assort independently in gametes during the process of meiosis due to which genetic variability is produced.
Name each numbered stage in the plant cell cycle diagram:
(Interphase, Prophase, Metaphase, Anaphase, or Telophase)
FINA.
Answer:
1. Metaphase
2. Prophase
3. Telophase
4. Interphase
5. Interphase
6. Interphase
7. Anaphase
8. Interphase
9. Telophase
10. Metaphase
11. Interphase
12. Interphase
13. Interphase
14. Interphase
15. Prophase
16. Interphase
17. Metaphase
18. Anaphase
19. Interphase
20. Interphase
21. Prophase
22. Interphase
Explanation:
The cell cycle is divided into two main divisions. The Interphase ad the M phase or the Mitotic phase.
Throughout Interphase, the cell is not dividing yet, but it is preparing to divide. It synthesizes the nutrients it will need, and grows in preparation to become two cells. This is actually the phase the cell spends the longest time.
Mitotic phase is when the cell starts to divide. It is separated into:
Prophase:
In this phase the chromosomes are condensed and mitotic spindles start to form. These spindles are made up of microtubules that will help later on to split the chromosomes. The nuclear membrane disappears so that the chromosomes will be free to move.
Metaphase
This phase is marked by the alignment of the chromosomes in the middle of the cell. They line up and you will find the asters at the opposite ends of the cell, where the microtubules stem from, attaching themselves to the center of the chromosomes, which we call the kinetochore.
Anaphase
In this phase you will see that the chromosomes are separated by the spindle fibers and are pulled at opposite ends of the cell. The cell then becomes longer by the other spindle fibers that are not attached to a chromosome.
Telophase
This phase is the end phase. The two sets of chromosomes are then enclosed by new nuclear membranes forming two nuclei and other cellular structures just as the cells are about to separate completely. As the two new cells move further apart, in plant cells a cell plate forms, dividing the two cells. The movement of the two cells splitting apart is called cytokinesis and it happens just as mitosis is about to end.
Attached is a picture of the cell cycle of a plant cell.
In the plant cell cycle, the numbered stages typically include Interphase, Prophase, Metaphase, Anaphase, and Telophase. Each stage carries out specific tasks for cell division and growth.
Explanation:The sequence of the numbered stages in the plant cell cycle typically follows this order:
Interphase: This is the period of growth and preparation for division. During Interphase, the cell doubles its DNA and synthesizes new proteins and organelles. Prophase: The chromosomes condense and become visible, while the nuclear envelope disappears. Metaphase: The chromosomes align at the middle of the cell (the metaphase plate). Anaphase: The sister chromatids are separated and moved to opposite ends of the cell. Telophase: A nuclear envelope re-forms around each set of chromosomes, and the chromosomes uncoil and become less visible. Cytokinesis occurs concurrently, splitting the cell into two.FINA could possibly refer to the final phase or stage, but without further context, it's difficult to ascertain its meaning in this situation.
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What information is examined when registering a pesticide?
The informations that are examined when registering a pesticide are given below:
Analyzing the quality of chemicals used in the production of specific pesticides. Its chronic exposure to human health and the environment. Its reliability and effectiveness under the consumption process. What do you mean by Pesticides?Pesticides may be defined as chemical substances that are sprayed in the crop field in order to prevent the infectious effect of any pest or pathogen.
The spraying the pesticides in the crop field increases the level of productivity.
Therefore, it is well described above.
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Which of the following is an example of a non-Mendelian pattern of inheritance?
Question:
Which of the following is an example of a non-Mendelian pattern of inheritance?
A. All traits are inherited through patterns found by Mendel.
B. When individuals with the genotype BB cross, all of the offspring have brown fur.
C. When pea plants that are heterozygous for a certain trait cross, some of the offspring express both distinct versions of the trait.
D. Human feet come in a wide range of sizes.
Answer:
Human feet come in a wide range of sizes is an example of a non-Mendelian pattern of inheritance
Explanation:
The Mendelian pattern of inheritance says single gene loci governs the physical feature of an organism or a trait. In two alternate form single genes are present i.e. recessive and dominant allele. This shows a particular trait like small or tall in pea plant. The variation of size of human feet shows the polygenic trait (depicting the variation) that is known to be controlled by more than two genes, so the human feet size variation is the non mendelian pattern of inheritance.
Explain why it is unusual for calix to be a male calico cat
Male calicos cat are rare cats, which displays the orange color present on the X chromosome.
The male calico cats have X and Y chromosomes. The X chromosome is responsible for the orange and red colors of the cats. The female cats can express both colors because females have XX chromosomes.
Since the male calico cat has only one X chromosome, it makes it rare for them to have the calico pattern.
The color of the fur color can be either black or orange, which is coded by two alleles present on the same locus of the chromosome.
One allele produces orange, whereas, the other allele produces orange. The X chromosome has an allele for orange color, which makes it rare for the male calico cats to express.
Therefore, the presence of X and Y chromosomes in males makes them have a rare orange color.
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Calix being a male calico cat is unusual because the gene for coat color in cats, which creates the tortoiseshell pattern, is located on the X chromosome. Male cats typically only have one X chromosome so they cannot produce a tortoiseshell pattern. Only exceptionally rare genetic conditions like Klinefelter syndrome can result in a male calico cat.
Explanation:It is unusual for Calix to be a male calico cat because the gene for coat color in cats is located on the X chromosome. In females, who have two X chromosomes, one of the X chromosomes is randomly inactivated in each cell during embryonic development. This results in a variegated, or tortoiseshell, pattern in their coat, given that the cat has two different alleles for coat color.
Male cats, however, have only one X chromosome because their sex chromosomes are XY. Thus, they cannot have two different coat color genes expressed as in the tortoiseshell or calico pattern. Therefore, a male calico cat is extremely rare and usually happens due to genetic mutations like Klinefelter syndrome, where a male cat has two X chromosomes and one Y chromosome (XXY).
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Why is it more important to check for errors during DNA replication than
during protein synthesis?
Answer:
Because DNA is the one which is responsible for provision of Codes neccessary for protein synthesis
Answer:
Because DNA will be responsible for the next steps that will lead to the production of proteins, therefore, if there are errors in the DNA, the entire transcription and translation process will be compromised.
Explanation:
DNA has the formulas to form all the proteins in the body, each segment of DNA has a set of genes that indicate the order of placement of each amino acid, how many and which amino acids are used to form a certain protein, with a certain function. If there are errors in the DNA, the entire production of amino acids will be compromised, whereas errors in the production of proteins compromise only that protein.
A gene is what encodes a specific enzyme or protein. The genome is all encoded human genetic material, that is, it is all base pairs present in DNA.
The chromosome is a grouping of genes, that is, it is a strand of DNA condensed into historical proteins. A codon is just a crack of base pairs, and each crack represents an amino acid.
can we culture virus like they do with bacteria media?
Answer:
Viruses cannot be cultured in media like, bacteria, but in a living cells.
Explanation:
In order to identify a virus the following techniques are performed: PCR (single round) or nested/semi-nested PCR, real-time PCR, direct electronic microscopy, antigen capture, isolation (gold standard for viruses that can be cultured). Viruses cannot be cultured in media like, bacteria, but in a living cells.
Virus culture is based upon amplification of potentially infectious pathogens. Implies intracellular replication of viruses in the cytoplasm or in the nucleus. It is controlled by regulations (i.e. bio-safety level 2, 3 or 4). It is possible to identificate and further investigate for pathogenicity, and antiviral sensitivity.
The primary cell culture is developed directly from living tissue and contain several different kinds of cells. They are expensive as they cannot be subcultured (passaged) more than a few times and hence new tissue needs to be obtained from animals on a regular basis. One example of a primary cell line is chicken embryo fibroblasts.
Diploid cell lines can be subcultured about 100 times before they die. Much more useful in the laboratory and they can be stored indefinitely in liquid nitrogen. An example of this type is human embryonic fibroblasts.
Continuous cell lines have lost the normal constraints on cell growth such as contact inhibition and mortality. They can be subcultured indefinitely in vitro. They are Hep-2, HeLa (from human cancers) and VERO (from Green African monkey kidney).
In order to obtain suitable specimens it is necessary to identify specimens with suitable information and to evaluate the success percent of the process. Transport attributes are 4⁰C,-20⁰C, dry ice (-79⁰C). According to the protocol, in vitro/in vivo cell cultures are used. There are blood specimens, stool, throat swabs, naso-pharyngeal aspirat, urine, saliva and biopsy of certain areas.
Virus detection may be non specific (cytopathogenic effect – microscope) or specific (immunological detection – antigen detection, PCR etc.).
Viral load estimation I performed by titration and/or plaque assay.
The most common culture limitations are the absence of detection system for the agent, inappropriate culture systems, viruses that cannot be cultured, a negative viral culture results does not mean that the agent is absent (PCR).
Which statement describes a property shared by lipids and carbohydrates
Lipids and carbohydrates both share the property of being hydrophobic, or insoluble in water. Lipids are nonpolar molecules, while carbohydrates have polar functional groups such as hydroxyl groups. This difference in polarity affects their solubility in water.
Explanation:Lipids and carbohydrates both share the property of being hydrophobic, or insoluble in water. Lipids are nonpolar molecules, while carbohydrates have polar functional groups such as hydroxyl groups. This difference in polarity affects their solubility in water, with lipids being more soluble in organic solvents such as dichloromethane and carbohydrates being more soluble in water.
How did the reintroduction of wolves into Yellowstone park return the stability to the Yellowstone ecosystem
Final answer:
The reintroduction of wolves into Yellowstone National Park helped restore stability and biodiversity to the ecosystem by altering elk behavior and allowing the regrowth of vegetation. Wolves also suppressed coyote populations and increased species diversity. They functioned as a keystone species, which played a crucial role in maintaining balance within the ecosystem.
Explanation:
Reintroducing wolves into Yellowstone National Park had a profound impact on the park's ecosystem, bringing back stability and biodiversity. Wolves preyed on elk, which caused the elk to change their foraging behavior and spend less time browsing near streambanks. This change resulted in the regrowth of important vegetation, which had positive impacts on the ecosystem as a whole. The reintroduction of wolves also suppressed coyote populations and provided more resources to detritivores, increasing species diversity in the habitat. Overall, the reintroduction of wolves as a keystone species helped restore balance and biodiversity to the Yellowstone ecosystem.
Explain the properties of water and why it is important to life. Include the following: specific heat, density, polarity, Universal solvent
Final answer:
Water is crucial to life due to its unique properties such as high specific heat, low density as ice, polarity, and role as a universal solvent. These properties enable temperature regulation, solvent capabilities, metabolic reactions, and maintenance of homeostasis within living organisms.
Explanation:
Water is essential to life largely due to its unique properties. Its polarity and ability to form hydrogen bonds make it an ideal medium for biological processes. These bonds are responsible for water's high specific heat, which allows it to absorb heat without a significant change in temperature, protecting living organisms from drastic temperature swings. The density of water plays a crucial role in aquatic ecosystems, as ice, being less dense than liquid water, floats and provides insulation.
As a universal solvent, water can dissolve a wide range of substances, which is vital for cellular metabolism and transporting nutrients and waste materials. The cohesive and adhesive properties of water contribute to the movement of water against gravity in plants and the formation of droplets. Lastly, water's role in homeostasis is seen in its ability to buffer changes in pH, which is essential for the function of enzymes and other biochemical reactions.
Understanding the special properties of water is fundamental in comprehending how it supports life on Earth, from cellular functions to global climate patterns.
how many amino acids does each codon code for?
Explanation:
Each codon codes for only one amino acid.
However, for one amino acid, multiple codons maybe encoded. While there are 64 codons, and four nucleotides in groups of three, only 20 amino acids may be encoded by these triplets, showing that the code is degenerate.
RNA codons determine certain amino acids, so the order in which the bases occur within in the codon sequence designates which amino acid is to be made bus with the four RNA nucleotides (Adenine, Guanine, Cysteine and Uracil). Up to 64 codons (with 3 as stop codons) determine amino acid synthesis. The stop codons ( UAG UGA UAA) terminate amino acid/ protein synthesis while the start codon AUG begins protein synthesis.
Further Explanation:
The message on DNA, called genes is copied by RNA polymerase, to form mRNA complementary sequence to that of the DNA strand. These are then translated into proteins in ribosomes; RNA codons determine certain amino acids, so the order in which the bases occur within in the codon sequence designates which amino acid is to be made bus with the four RNA nucleotides (Adenine, Guanine, Cysteine and Uracil). Up to 64 codons (with 3 as stop codons) determine amino acid synthesis. The stop codons ( UAG UGA UAA) terminate amino acid/ protein synthesis while the start codon AUG begins protein synthesis.
Nucleic acids like DNA stores all of an organism’s genetic information. Nucleic acid molecules comprise the nitrogenous bases Guanine, Adenine, Cytosine and Thymine. Conversely, RNA nucleotides are Adenine, Guanine, Cysteine and Uracil. These pair up as base pairs due to their varied structure- largely influenced by the location of N molecule.
In certain combinations, these bases form codons which act as instructions for protein synthesis. Codons are three nucleotide bases encoding an amino acid or signal at the beginning or end of protein synthesis. Thus, these contribute to the broad diversity of living organisms, as varied combinations of these 64 codons can produce many proteins which can be organized into cells, tissues and organisms.
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Each codon, made up of three nucleotides, codes for one amino acid. But due to the degeneracy of the genetic code, most amino acids are specified by multiple codons, with a total of 64 possible codons and only 20 common amino acids.
Explanation:Each codon is composed of three nucleotides and codes for a single amino acid. However, the genetic code is degenerate, meaning that most amino acids are encoded by more than one codon. There are 64 possible codons, but only 20 common amino acids. Among these codons, 61 code for amino acids and the remaining 3 are stop codons that signal the end of protein synthesis. The degeneracy primarily occurs in the third nucleotide of the codon, which is often referred to as the wobble position. Notably, the amino acids methionine (AUG) and tryptophan (UGG) are the only two encoded by a single codon each. This characteristic of the genetic code helps to protect against mutations that might otherwise be harmful if the code were not redundant.
How might a high stomatal density on plant leaves affect the Calvin cycle during cool days?
A.Higher stomatal density would increase the amount of carbon incorporated into RuBP.
B.Higher stomatal density would decrease the production of rubisco in mesophyll cells.
C.Higher stomatal density would decrease the amount of ADP released in the reactions.
D.Higher stomatal density would increase the amount of NADPH produced during the cycle.
Answer:
The correct option is A. Higher stomatal density would increase the amount of carbon incorporated into RuBP.
Explanation:
Stomata can be described as tiny structures present in the leaves of a plant which open and close to allow gaseous exchange. They might be present in the stems of some plants as well. The opening and closing of the stomata is controlled by a specialized type of cells which are known as the guard cells.
Option A is correct because it is the only option that correctly relates the function of the stomata.
Answer:
A. Higher stomatal density would increase the amount of carbon incorporated into RuBP.
Explanation:
The above explanation is correct.
2. Can you rule out any of the men as Lisa’s father based ONLY on his ABO type?
3. Can you rule out any of the men as Lisa’s father based ONLY on his Rh type?
4. Which of the MEN could safely donate blood to Lisa?
Without knowing the exact blood types (ABO and Rh) of Lisa and the men, it's not possible to definitively rule any man out as being Lisa's father or potential blood donors. However, a man with Type O, Rh- blood could donate blood to virtually anyone, including Lisa.
Explanation:To answer all three questions regarding Lisa's potential father and the men that can donate blood to Lisa, we would require the ABO and Rh types of both Lisa and the potential fathers. The basic principle is that a person of a specific blood type can receive blood only from his own type or type O (universal donor), and a person with an Rh- blood cannot receive Rh+ blood but vice versa is possible.
Let's go through them one by one:
Without knowing Lisa and the man's ABO type, we can't conclusively rule anyone out based solely on this factor.The same principle applies to the Rh type. If Lisa is Rh-, only men who are also Rh- could potentially be her father. If Lisa is Rh+, her father could be either Rh+ or Rh-.A man who has Type O blood and an Rh- factor could safely donate blood to Lisa, as individuals with this blood type are considered universal donors.Learn more about Blood Typology here:https://brainly.com/question/34203967
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(52 POINTS+BRAINLYEST IF UR CORRECT!)
Observing the size of a herd of elephants that are all the same species would be an observation at the ___________ level.
community
ecosystem
population
individual
Answer:
population
explanation:
Answer:
community
Explanation:
As the human population continues to grow, use technology, and consume resources, they often modify the ecosystems around them. In which of the following ways can humans counteract negative influences they might have on the environment?
A. Humans can use public transportation systems.
B. Humans can use cleaner alternate energy sources.
C. Humans can recycle or reuse materials.
D. all of these
Explanation:
D. all of these
Public transportation, cleaner energy and recycling would lead to a reduction in pollution and burning fossil fuels.
An environment's biology includes both abiotic factors like atmosphere, water, soil, sunlight and temperature; and biotic factors which are living components of the ecosystem. These factors lead to a gradual change of an ecosystem over time; however, humans drastically impact the environment through over-exploitation and pollution- we disrupt normal abiotic and biotic interactions. Furthermore, human impact can lead to population die-offs and extinction events, along with food and water scarcity.
Humans impact on the environment can manifest as:
overpopulation- natural resources are over used, and habitats cannot support human communities; urban communities also expand by cutting down trees in deforestation- this leads to erosion and flooding; burning fossil fuels- this reduces air quality and adds carbon dioxide to the environment leading to global warming; pollution- adding contaminants to the atmosphere, waterways, soil etc.Learn more about ecological succession at brainly.com/question/2456852
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What is a karyotype, and how can it be used to study human chromosomes?
Answer:
karyotype is the array of chromosomes possessed by a certain specie or by an individual.
it can be used to study human chromosome by facilitating information on the type or array of the chromosomes, hence knowing the data, characteristics and effects of such a chromosome
Explanation:
What fraction of opals children would you expect to be able to brag about their blue hair show the cross
Half of the total number of Opals children (50%) will have blue hair.
Explanation:When an Oompah with purple hair (Pr) marries an Opal with blue hair (rr) out of the four children born two will have blue hair as represented by the below table.
From the table we find that two children are born with the dominant (purple) trait and two with the recessive (blue) trait. Allele is the other word for trait defined by Gregor Mendel in his Law of Segregation. Dominant allele is visible and recessive allele is masked.
How many individuals have blue skin in the seven generations in the pedigree
In the seven-generation pedigree, there are seven individuals with blue skin, including Martin, his two daughters, two sons (one being Zach), Luna, and Benjy.
Let's break down the information further based on the provided hint:
1. Martin: The first individual with blue skin.
2. Martin's two daughters: Two more individuals in the second generation.
3. Martin's two sons (one is Zach): Two additional individuals in the second generation, one of whom is named Zach.
4. Luna: One individual in the third generation.
5. Benjy: One individual in the fourth generation.
If we count these individuals from each generation, we have a total of seven individuals with blue skin across the seven generations:
1. Martin (1st generation)
2. Martin's two daughters (2nd generation)
3. Martin's two sons (one is Zach) (2nd generation)
4. Luna (3rd generation)
5. Benjy (4th generation)
So, the seven individuals with blue skin span across these generations in the given pedigree.
By counting the blue symbols across all seven generations in the pedigree chart, we can determine the number of individuals with blue skin, as blue represents those with the genotype aa.
We need to identify individuals with the genotype aa. Pedigree charts represent affected individuals with specific colors, in this case, blue denotes individuals with blue skin. By carefully examining the chart and counting each blue symbol across all seven generations, we can determine the number of individuals with blue skin.
Overall, the process involves:
Recognizing that blue color indicates affected individuals with the genotype aa.Counting all the blue symbols from the top generations down to the seventh generation of the pedigree chart.With this approach, you can accurately count and determine the number of individuals exhibiting the blue skin trait.
Many prokaryotes reproduce through binary fission. The circular DNA is
copied and moves to opposite sides of the cell. The cell divides. What kind of
cell division and reproduction is this?
A. Mitosis; sexual reproduction
B. Meiosis; asexual reproduction
C. Meiosis; sexual reproduction
D. Mitosis; asexual reproduction
Answer:
D
Explanation:
Mitosis is a form of reproduction in simple living organisms. The outcome of mitosis is two identical daughter cells, and it follows the process described in the prompt. It doesn't require genetic material from another organism, so it's asexual reproduction.
The correct option is (b) . Meiosis; asexual reproduction
Meiosis does not occur during asexual reproduction. Meiosis is the process of producing gametes (eggs and sperms).Mitosis, on the other hand, is simply the process of cell division.This is the process that animals go through during regeneration. Is there asexual reproduction in mitosis? Both sexual and asexual organisms undergo mitosis. It occurs in cells of the body known as somatic cells and produces cells that are involved in growth and repair. Mitosis is essential for asexual reproduction, regeneration, and growth. Does not form sex cells or gametes.Learn more about Meiosis; asexual reproduction https://brainly.com/question/1543404?referrer=searchResults here
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Part A - Name and describe the chemical process producers use to make glucose and the chemical process used by both consumers and producers to make ATP to contribute to the exchange.
Part B - Identify the products of each process and explain how these products are used in the exchange.
Answer:
The process that is used by producers to make glucose is called photosyntheis and the chemical process used by both producers ans consumers to make ATP ito contribute to the energy exchange is called cellular respiration.
Explanation:
Photosynthsis
Photosynthesis occue in the mesophyll tissue present in leaves of plants .During photosynthesis the green plants or producers acquires CO2 from the atmosphere and utilizes water in presence of sunlight to produce glucose molecules along with the liberation of oxygen gas.
Cellular respiration
During cellular respiration the glucose molecules are oxidized to form energy in form of ATP along with the production of water and carbon dioxide.
The O2 that formed during photosynthesis is inhaled by human beings for respiration whereas the CO2 that is produced as waste material inside our body is exhaled by us in the atmosphere.The CO2 is then used by the green plants to carry out photosynthesis.
Plants use photosynthesis to produce glucose and oxygen, and both plants and animals use cellular respiration to turn glucose into ATP, energy. The products of photosynthesis, glucose and oxygen, and the products of cellular respiration, ATP, carbon dioxide and water, contribute to the cycle of energy exchange in ecosystems.
Explanation:
Part A - The chemical process used by producers, such as plants, to make glucose is called photosynthesis. This process uses carbon dioxide, water, and sunlight to produce glucose and oxygen. On the other hand, both consumers (animals) and producers (plants) use a chemical process called cellular respiration to convert glucose into a form of energy known as ATP (adenosine triphosphate).
Part B - The products of photosynthesis are glucose and oxygen. The glucose is used as a form of energy during cellular respiration to create ATP, and the oxygen is used by consumers in their own process of cellular respiration. The products of cellular respiration are ATP, carbon dioxide, and water. The ATP provides energy for various biological processes, while carbon dioxide and water are waste products or are used in other processes like photosynthesis.
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Answer:
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Explanation:
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Answer and Explanation:
both A and BThe ribosomesall of the aboveWhich stage of mitosis does DNA condense and form chromosomes
Answer:
At the prophase stage of mitosis , the DNA condense and form chromosomes.
Explanation:
The process in which new cells are made order to grow, replenish (repair), and reproduce is called cell division . The three main types of cell division are binary fission, mitosis, and meiosis. In prokaryotes like bacteria cell division take place through binary fission, while eukaryotes uses two types of cell division - mitosis (the process of making new body cells like blood, muscle etc ) and meiosis (reproductive cell division that creates egg and sperm cells). In mitosis, a cell is replicated into exact copies of itself and duplicates all of its contents including the chromosomes and splits to form two identical daughter cells. During cell division, cells pass through different phases called cell cycle. During interphase of the cell cycle, which occurs prior to mitosis, there are 3 phases: G1, S, and G2. In the G phases , the organelles are duplicated and the cell grows in size while in the S phase, a duplicate copy of each chromosome is synthesized (DNA replication). After the DNA and organelles are replicated during interphase , the mitosis begins. The first step is prophase where the nuclear envelope surrounding the DNA and the nucleolus disappear and the DNA condenses into chromosomes. During metaphase, the chromosomes lined in the middle of the cell. In anaphase , the chromosomes get separated and move towards opposite sides of the cell. As mitosis proceeds to telophase, the cell forms two nuclear membranes around each set of chromosomes and the chromosomes uncoil. The cell cytoplasm separates, the cell walls then pinch off and split down the middle producing two new daughter cells by a process called cytokinesis or cell cleavage. Cytokinesis takes place during anaphase and telophase.
Prophase is the phase of mitosis in which DNA condenses and forms visible chromosomes. In this stage, the chromosomes pair up with their identical partners to form sister chromatids, and the nuclear envelope disintegrates.
Explanation:The stage of mitosis in which DNA condenses and forms chromosomes is Prophase. During this initial phase, loosely packed chromatin coils and condenses into visible chromosomes. These chromosomes appear with their identical partner attached, forming an X-shaped structure known as sister chromatids. Throughout this phase, the nucleolus disappears and the nuclear envelope disintegrates, proceeding towards the next stages of mitosis.
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