Answer:
The answer is C. F
Explanation: I did this on USATESTPREP
Answer:
C
Explanation:
I did it on USATestPrep
The muscular and skeletal systems interact with one another to maintain
Answer:
Homeostasis
Explanation:
Skeletal muscles contribute to maintaining temperature homeostasis in the body by generating heat. Muscle contraction requires energy and produces heat as a byproduct of metabolism. ... In these individuals, a drastic increase in skeletal muscle calcium leads to sustained contractions and heat generation.
Conjugation differs from reproduction because conjugation
Answer:
Conjugation differ from reproduction because Conjugation transfer DNA horizontally to cells in the same generation.
Explanation:
Conjugation is a process of transfer of genetic material from one organism to another organism to direct contact.
An organism serve as the donor and transfer to another organism which is the receiver.
The donor carry DNA sequence called fertility factor. It transfer DNA horizontally to cells in the same generation. It is a type of genetic recombination that occur between two organisms.
Conjugation normally occur in bacteria.
Conjugation differs from reproduction in that it is a form of genetic recombination in bacteria where DNA is transferred between organisms. Reproduction, on the other hand, is a process where new organisms are generated.
Explanation:Conjugation differs from reproduction because it is not a process that results in the creation of new organisms. Instead, conjugation is a form of genetic recombination in bacteria where DNA is transferred from one bacteria to another. In contrast, reproduction, whether asexual or sexual, is a process where new organisms are generated. To illustrate, imagine two separate species of bacteria. During conjugation, a piece of DNA from one bacteria can be transferred to the other, causing a change in its genetic structure. However, this process doesn't result in a new organism, unlike reproduction where a single organism can divide (asexual reproduction) or two organisms can combine (sexual reproduction) to create new organisms.
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Which process produces two genetically identical somatic cells?
Answer:
Mitosis
Explanation:
In single-cell organisms, mitosis is the only form of cellular reproduction. One round of mitosis yields two genetically identical cells. In multi-cellular organisms, like ourselves, mitosis only occurs in somatic cells, which comprise all cells in an organism excluding germ cells
Which of the following are NOT correctly matched?
A. severe combined immunodeficiency syndrome (SCID): genetic defect resulting in a shortage of B and/or T cells
B. multiple sclerosis: autoimmune disorder
C. immediate hypersensitivity: allergic contact dermatitis
D. AIDS (acquired immune deficiency syndrome): helper T cells are destroyed by a virus
Answer: immediate hypersensitivity: allergic contact dermatitis
Explanation:
A typical human cell contains 46 chromosomes. After mitosis and cell division, each of the two new cells formed for the original cell:
A. gets 23 new chromosomes
B. a grows new chromosomes from
existing DNA
C. gets a complete set of 46 chromosomes
Answer:
gets 23 new chromosomes
A student constructs a Venn diagram to compare the organelles in plant and animal cells.
Venn Diagram of Plant and Animal Cells
A Venn Diagram is shown. One circle is labeled Animal only, the other circle is labeled plant only, and the overlapping section is labeled both.
Which organelle should be listed under “Plant Only” in the diagram?
centriole
vacuole
lysosome
chloroplast
D. The organelle the student should listed under “Plant Only” in the diagram is chloroplast.
What is chloroplast?A chloroplast is a type of membrane-bound organelle known as a plastid that conducts photosynthesis mostly in plant and algal cells.
Chloroplast is only in plants since plants make their own food through photosynthesis, and the chloroplasts is contained in plant's chlorophyll.
Thus, the organelle the student should listed under “Plant Only” in the diagram is chloroplast.
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A botanist discovers a new species of plants in a tropical rain forest. After observing its anatomy and life cycle, he notes the following characteristics: xylem, separate gametophyte and sporophyte generations, sporophyte dominance, seeds formed among cones, but no fruits. This plant is probably most likely a ___________.
a. mossesb. conifersc. liverwortsd. flowering plantse. ferns
Answer:
A botanist discovers a new species of plants in a tropical rain forest. After observing its anatomy and life cycle, he notes the following characteristics: xylem, separate gametophyte and sporophyte generations, sporophyte dominance, seeds formed among cones, but no fruits. This plant is probably most likely a conifers
Explanation:
Only angiosperms bears fruit and conifers are gymnosperms as they posses other features mentioned above
How is a generic embryonic cell different from a differentiated cell?
Choose 1 answer:
Choose 1 answer:
(Choice A)
A
A differentiated cell has a specific structure to perform a particular function.
(Choice B)
B
A generic embryonic cell can only be found in later stages of development.
(Choice C)
C
A generic embryonic cell undergoes meiosis while a differentiated cell undergoes mitosis.
(Choice D)
D
A differentiated cell is diploid, while a generic embryonic cell is haploid.
Answer:
How is a generic embryonic cell different from a differentiated cell?
differentiated cell has a specific structure to perform a particular function.
Explanation:
Answer:
A differentiated cell has a specific structure to perform a particular function.
Explanation:
During development, cells become more and more different from one another so they can be specialized for specific functions
When the mRNA strand is being formed, what base matches up to adenine?
Answer:
Uracil
Explanation:
Transcription is the first stage of gene expression in a living cell and it involves the synthesis of a mRNA molecule using a DNA template. The process of transcription is carried out by an enzyme called RNA polymerase, which initially binds to the PROMOTER region of a DNA, unwind its double-helix and begins to add nucleotide bases to the growing RNA strand based on the nucleotides it reads on the DNA.
The basis of nucleotide addition by RNA polymerase is COMPLEMENTARY BASE PAIRING RULE, which states that Adenine (A) always pairs with Thymine (T) and Guanine (G) with Cytosine (C). RNA polymerase adds to the RNA strand, nucleotides complementary to the ones it reads on the DNA. Since, Uracil base replaced Thymine in the RNA molecule, RNA polymerase adds Uracil to the RNA strand, for every Adenine it reads on the DNA template.
whats your biggest organ on the body
Answer:
The liver
Explanation:
Answer:
Your skin
Explanation:
The skin is body's largest and also the fastest-growing organ. Skin covers 22 square feet of the human body in a full grown adult.
A solar and wind power challenge is that it is
All of the following help the cell regulate gene expression during Step 2 of protein formation EXCEPT
A. general factors that are required for the RNA polymerase to bind to the promoter
B. repressors binding to the operator preventing the RNA polymerase from progressing
C. specialty factors binding to the RNA polymerase, altering its specificity
D. tRNA that binds to the RNA polymerase in the presence of complementary mRNA
The cell regulates gene expression during Step 2 of protein formation, except for tRNA binding to the RNA polymerase in the presence of complementary mRNA.
Explanation:
The subject of this question is Biology and the grade level is High School.
All of the options listed in the question are examples of mechanisms that cells use to regulate gene expression during Step 2 of protein formation. However, option D, tRNA binding to the RNA polymerase in the presence of complementary mRNA, is not a correct example. tRNA is involved in protein synthesis, not gene expression regulation.
So, the correct answer is D. tRNA that binds to the RNA polymerase in the presence of complementary mRNA.
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One of the biggest challenges for the exploration and future colonization of space is the expense of launching materials from Earth. Current rocket propulsion technology makes launches very expensive. Every item launched into space must be considered carefully because the expense goes up with every extra pound of cargo.
This problem would be best solved with
A.
heavier, more durable rockets and launching methods that are less cost-efficient.
B.
launching methods that are more cost-efficient and cargo made of lighter materials.
C.
heavier, more durable rockets and launching methods that are more cost-efficient.
D.
launching methods that are more cost-efficient and cargo made of heavier materials.
B
Explanation:
I just had it
A man who is a dwarf due to achondroplasia and has normal vision marries a color-blind woman of normal height. The man's father was 6 feet tall, and both the woman's parents were of average height. Achondroplasia is autosomal dominant, and red-green color blindness is X-linked recessive. How many of the couple's daughters might be expected to be color-blind dwarfs
Answer: None of their daughters.
Explanation: For the purposes of this exercise, we shall take it as a given that red-green color blindness has an X-linked recessive inheritance pattern. Since the man (who possesses only one X chromosome) does not have color blindness, we can assume that he is not a carrier of a pathogenic allele for this trait. His female partner, in contrast, does have the disease despite being in possession of two X chromosomes and we can therefore assume that each of those X chromosomes contains a pathogenic allele.
Each of the couple's potential daughters will inherit two X chromosomes. The one inherited from the father's side will contain a normal allele (barring the potential for de novo mutations), while the one inherited from their mother will contain a pathological allele. Since it takes two affected alleles for the disease to become manifest, those daughters will be merely asymptomatic carriers.
In conclusion: none of the daughters (affected by dwarfism, or otherwise) will be colorblind.
5. How could you increase the power of a wave in a spring?
Answer:
A. Increase the amplitude. B. Increase the frequency. C. Increase the tension on the spring.
Explanation:
all of the above
Final answer:
To increase the power of a wave in a spring, increase its amplitude as power is proportional to the amplitude squared. Increasing rigidity, such as by holding a ruler at its midpoint, also affects wave properties. For resonant frequency, altering the length of the air column by adding water increases the frequency.
Explanation:
To increase the power of a wave in a spring, you can modify several variables that affect the energy of the wave. Power in a wave is directly proportional to the square of the amplitude, so increasing the amplitude of the wave can significantly increase its power. Moreover, to exemplify the concept, if we want to increase the rigidity of a simple experiment like bending and releasing a ruler, one way is to hold the ruler at its midpoint instead of the end. This modifies the length of the oscillating part and makes the system more rigid, which would effectively alter the wave properties. Additionally, you could change the material of the ruler to one with a higher Young's modulus, which would also increase rigidity.
Evolution can be described as the change in ___ frequencies of a ___ over time. The process of natural selection acts on specific ____ and causes a change in the frequency of the alleles that produce them. A population of organisms with similar phenotypes that interbreed is defined as a ___. Note that ___ evolve, not individuals.
Evolution can be described as the change in the allele frequencies of a gene pool over time. The process of natural selection acts on specific phenotypes and causes a change in the frequency of the alleles that produce them. A population of organisms with similar phenotypes that interbreed is defined as a species. Note that species evolve, not individuals.
Explanation:
Evolution is the gradual change in species over time due to selective response processes.
Natural selection of species leads to overproduction of species, variation or habitability of heritable characteristics, selection of inherited traits or phenotypes which aid the species to better suit to their environment, and to enhance and maintain the species fitness to survive and thrive in their environment.
Natural selection leads to genetic drift or shift in the gene pool to develop favorable phenotypes under random circumstances through bottleneck or founder effects.
The frequency distribution of phenotyes follows a bell curve due to either directional, stabilizing, or disruptive natural selection processes. The group or population with similar type of traits or phenotypes which can interbreed among themselves are collectively called as species.
The evolutionary changes are exhibited or observed in the species as a whole and not in an individual organism due to evolutionary processes like co-evolution, divergent and convergent evolution.
True or False: The F1 generation of a cross between two individuals, one who is homozygous dominant for the trait and the other who is homozygous recessive for the trait, will yield progeny(offspring) with the recessive phenotype.
Answer: False
Explanation: The parent with homozygous dominant counteracts the homozygous recessive. Thus, rendering the dominant phenotype
Constant high pressure in an area in summer will MOST LIKELY cause a
Constant high pressure in an area in summer will most likely cause stable and dry weather conditions.
Constant high pressure in an area during summer typically leads to stable and dry weather, with clear skies and higher temperatures due to sinking air that inhibits cloud formation. High-pressure systems are generally associated with sinking air, which inhibits cloud formation and leads to clear skies. Moreover, the sinking air increases in temperature as it descends, which can cause higher temperatures in the affected region. Since there are fewer clouds, there will be more sunlight reaching the ground, contributing to the warming effect. Furthermore, high pressure tends to divert storm systems, keeping the region dry. These weather conditions can persist for an extended period if the high-pressure system remains stationary.
Explain why excess nitrogen in the water can lead to fewer fish and shrimp
Answer:
Excess nitrogen can cause over-stimulation of growth of aquatic plants and algae. Excessive growth of these organisms, in turn, can clog water intakes, use up dissolved oxygen as they decompose, and block light to deeper waters. So few organisms live in these conditions or even can suffocate and die.
Final answer:
Excess nitrogen in aquatic ecosystems from fertilizer runoff and sewage leads to algal blooms, which deplete dissolved oxygen when the algae die and decay. This oxygen depletion causes the death of aquatic organisms like fish and shrimp, resulting in fewer of these animals in water bodies affected by these pollutants.
Explanation:
Excess nitrogen in the water can lead to fewer fish and shrimp because it causes the overgrowth of algae, a phenomenon often referred to as an algal bloom. When these algae die, they are decomposed by bacteria, a process that depletes the water of dissolved oxygen. This reduction in oxygen levels can suffocate aquatic life, leading to the death of organisms such as shellfish and finfish. As oxygen levels continue to fall, these areas can become 'dead zones' where most aquatic life cannot survive, resulting in significant decreases in fish and shrimp populations.
This process is exacerbated by excessive amounts of phosphorus and nitrogen that enter waterways through fertilizer runoff and sewage discharge, enhancing the growth of microorganisms and leading to the decline of ecosystem fauna. These nutrient-rich pollutants promote the algae's growth, which in turn triggers the deoxygenation of the water as the algae die and decay, creating a negative impact on aquatic ecosystems, particularly during the warmer summer months.
How are new viruses reproduced?
will give Brainliest
Answer:
viruses are re produce through cells
Explanation:
the virus puts its DNA it to the c ells nucleus so when mitosis happens the cell will be an exact replica of the virus
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What event occurred during the Paleozoic era?
A) diversification of mammals
B) first appearance of most modern invertebrates
C) dominance of non-avian dinosaurs
D) beginning of multicelled life
The first appearance of most modern invertebrates. Therefore, option (B) is correct.
What is Paleozoic era?The Paleozoic era spanned from about 541 to 252 million years ago and was marked by significant geological, climatic, and biological events. It saw the emergence and diversification of many major groups of animals, including the first appearance of most modern invertebrates, such as trilobites, brachiopods, and mollusks.
The first land plants and the evolution of fish and amphibians also occurred during this era. The era ended with the largest mass extinction in Earth's history, which wiped out about 90% of marine species.
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How many chromosomes are in the body cells of an organism that has a diploid number of 8
A. 4
B. 8
C. 16
Answer:
there are 16 chromosomes
Body cells of an organism with a diploid number of 8 will have 8 chromosomes. Diploid cells have twice the number of chromosomes as haploid cells, and meiosis produces four haploid offspring from a diploid cell. A gamete of an organism, which is haploid, would have half the number of chromosomes that a somatic cell has.
Explanation:The diploid number of an organism refers to the total number of chromosomes found in a normal somatic cell. This number is often represented as 2n, where 'n' stands for a single set of chromosomes. Therefore, in an organism with a diploid number of 8, it will have 8 chromosomes in its body cells.
Diploid cells have twice the number of chromosomes as their haploid counterparts.Meiosis typically produces four haploid daughter cells from a diploid cell.When a muscle cell of an organism has 32 chromosomes, being a diploid somatic cell, a gamete from the same organism (which is haploid) would have half the number of chromosomes, meaning 16 chromosomes.
What is it called when plants give off water vapor as a waste product?
Answer:
Transpiration!
Explanation:
Answer:
Water uptake to the environment occurs via the processes of evaporation and transpiration from plant life in which it condenses to shape clouds.
Explanation:
What part of the food web do these images represent? EXPLAIN YOUR ANSWER!!
Answer:
Producer.
Explanation:
They're plants. Plants are producers, and they get eaten by consumers.
Answer:
Decomposers
Explanation:
These are producers, however, they're slowly rotting and decomposing themselves because they aren't good to eat anymore.
A series of strong storms opened a stream channel between two lakes. The western lake contains a large, diverse population of a species of minnow. The eastern lake has never been populated by fish. When the channel opened, a small group of fish migrated to the eastern lake. Soon after, the stream channel dried up and was never opened again. The fish in the eastern lake thrived and continued to reproduce, building a large population over time. Compared with the fish in the western lake, what characteristics would you expect the population in the eastern lake to exhibit?
Answer:
Minnow from the eastern lake will exhibit characteristics similar to the small group of migrants
Explanation:
The principle of inheritance indicates that related individuals will have similar phenotypes to their ancestors because they have the same genes
Which level of organization is shown in the diagram?
O organ
O tissue
O organ system
O cell
Organ level organization is shown in the picture.
What is the body organ ?
"Organs are the body's recognizable structures (for example, the heart, lungs, liver, eyes, and stomach) that perform specific functions. An organ is made of several types of tissue and therefore several types of cells .Cells are the basic building blocks of the body".
What are the four levels of organization in the human body?
"An organism is made up of four levels of organization: cells, tissues, organs, and organ systems".
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hat is the role of the central nervous system
Answer:
controls most functions of the body and mind. It consists of two parts: the brain and the spinal cord. The brain is the center of our thoughts, the interpreter of our external environment, and the origin of control over body movement.
Explanation:
.
A researcher is testing a new antiviral agent that reduces the severity of a highly contagious strain of the flu virus. She has found that the antiviral agent only it administered within 48 hours of the onset of symptoms. This information would lead the researcher to believe the virus
Answer:virus is at its infant stage for the first 2days and develop into adulthood afterwards hence the virus becomes resistant to the antiviral agent.
Explanation:
A human red blood cell in an artery of the left arm is on its way to deliver oxygen to a cell in the thumb. To travel from the artery to the thumb and then back to the left ventricle, this red blood cell must pass through __________.
a. one capillary bedsb. two capillary bedsc. three capillary bedsd. four capillary bedse. five capillary beds
Answer:
(b). two capillary beds.Explanation:
A human has a complete circulatory system that plays an important role in the circulation of the blood in the body of the human. Generally, there are two vessels that are responsible to transport the oxygenated blood and deoxygenated blood in the body. Generally, the artery carries oxygenated blood except for the pulmonary artery and the other is the vein that transports the deoxygenated blood except for the pulmonary vein. Capillaries are the microscopic vessel that is originated from the artery and connects the venules. When they are present in the form of a network is generally known as capillary beds and plays an important role in the exchange of nutrients, gases and other materials between the tissues cells and the blood. They are categorized as two capillaries bed, three capillaries bed and some other on the basis of the capillary in a network. Two capillary beds play an important role in the delivery of blood from the heart to the thumb and from thumb to the left ventricles.To travel from the artery to the thumb and then back to the left ventricle, the red blood cell must pass through TWO CAPILLARY BEDS.
A capillary bed is a complex network of blood vessels capable of supplying blood to a particular body structure, tissue, or organ.The capillary beds not only transport nutrients and oxygen to the cells, but they also are required to carry out waste byproducts (e.g., carbon dioxide).In blood circulation, two different capillary beds can be connected by the veins.In conclusion, to travel from the artery to the thumb and then back to the left ventricle, the red blood cell must pass through TWO CAPILLARY BEDS.
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Scientists have observed that the light emitted from faraway galaxies is shifted toward the red on the electromagnetic spectrum compared to similar galaxies that are closer. This is called a redshift. How does this data support the idea that the universe began with a period of rapid expansion and is continuing to expand? A. The redshift indicates the types of matter in the galaxies. B. The redshift indicates the age of the galaxies. C. The redshift indicates that the galaxies are moving away rapidly. D. The redshift indicates that the galaxies are getting closer together.
Answer:
C
Explanation:
answer: C. The redshift indicates that the galaxies are moving away rapidly