Answer:
The principle of segregation.
if the generation time is 90min and the initial population is 10^3, how many bacteria growth will you get after 8hrs
Answer:
5333
Explanation: if 1000 bacteria need 90 minutes for their growth then in 8 hrs the population of bacteria reach upto 5333.
in which process do plant release oxygen?
Answer:
photosynthesis
Explanation:
carbon dioxide + water+ light energy -> oxygen + glucose
Answer:
photosynthesis
Explanation:
What type of rock is pictured here?
Answer:
Your answer would be intrusive
Answer:
intrusive
Explanation:
the person that answered first is correct so give them brainleist plz
Limiting factors determine an area’s carrying capacity because
Answer:
Animals need resources to survive.
Explanation:
With a lack of enough resources for various animals, it generates competition for resources and eventually animals will start to starve and die off.
The Thyroid, parathyroid, And thymus are located in the
Brain
Throat
Abdomen
Answer:
Throat.Thyroid plays a major role in metabolism,Thymus plays a vital role in producing white cells which help to fight off disease and. in increasing immunity.Parathyroid is vital in producing calcium.
Natural selection occurs at the organizational level to
Answer:
Ecosystems
Explanation:
plain logic :)
Answer:
its b. population
Explanation:
what happens as humans use more and more land for development
Answer:
the land become populated
Answer:animal habitats become fragmented
Explanation:
how does the property of water pictured below help a plant to thrive?
The adhesion and cohesion property of the water helps a plant to thrive.
Explanation:
The adhesion and cohesion property of the water is the two most important properties of water that regulate how water will work at different places of a plant. When water gets attracted to water then we can call it cohesion.
When water gets attracted to other substances then we can call it adhesion. In different part of the plants like roots, stem and leaves water reaches there by capillary action and works differently based on adhesion and cohesion property
Which is the site of the light dependent reaction‘s of photosynthesis
Answer:
The thylakoid membrane
Explanation:
please answer :)
Groundwater is a significant source of freshwater for many people. Do you think it’s necessary to monitor water wells for possible contamination by factories and other industries? How often should testing take place? Explain your answer.
it’s necessary to monitor water wells for possible contamination by factories and other industries? yeah because some of industries and factories produce soluble wastes such as Nitrate compound eg agriculture fertilizer making industry also indirectly may polute ground water through activity of acidic rain by acidic gas they produced
Testing should be taken regularly as it's impact can be anytime as water pollution effect is proportional to the waste product produced such as land degradations
Water testing is paramount important to ensure the quality of drinking water and to avoid the diseases spreading from water contamination. There are many more possibilities for water to be contaminated by the nearby industrial effluences.
What is water contamination?Contamination of water by hazardous and toxic chemicals is a serious issue nowadays. There are lot of industries and factories working side to the water sources and they are disposing the chemical wastes to the river sides.
Through these industrial effluents many toxic chemicals and heavy metals such as lead, cadmium, arsenic etc. are reaching water and by using this water results in serious health risks.
Therefore, the quality of water must be checked to ensure that the presence of of these metals and other particulates are only up to the limit. Similarly the presence of microbes , pH and alkalinity of the water must be checked.
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Which type of gene is most likely to be widely expressed in the body of someone who has superficial scrape?
Missing options in the question:
the gene that controls the production of stem cells
the gene that controls the production of skin cells
the gene that controls the production of red blood cells
the gene that controls the production of cardiac cells
Answer:
B. the gene that controls the production of skin cells
Explanation:
Superficial scrapes are the damages of upper skin layers which could occur due to accidents or sunburning. Upon damaging, body sheds the skin cells and then replaces with new cells. This process thus is governed by the expression of skin related genes.
Answer:
A gene that stimulates and controls the production of white blood cells.
Explanation:
First, it is necessary to know that a gene is a sequence of DNA that has information for the formation of molecules necessary for the body. These molecules can be proteins, cells, enzymes, among other things that are needed at that very moment.
When a person on superficial scratches, the skin cells send a signal that it is necessary to defend the injured part from possible invaders that could harm the organism. At that moment, the genes come into action and are quickly expressed, not all of the organism's genes, but only those that contain information for the production and control of defense cells, the white blood cells, which will prevent invaders from using the scratches as entry into the body and cause damage.
review the image below
what is the function of this type of tissue?
binding organs and tissues together
control and coordination
movement
protection
Binding organs and tissues together
It is evident from the image that the tissue is mainly made up of fibers (appear like collagen fibers) and very little cells. This is a major characteristic of connective tissues. This type of issue is mainly found in location such as between organs and skin, joints.
Explanation:
The image specifically shows a dense and regular connective tissues due to the high density of the fibers and their parallel arrangement. This type of connective tissue is found in areas of high stress such as tendons and ligaments that experience high tension.
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The p53 gene performs what function
Final answer:
The p53 gene acts as a tumor suppressor that either repairs damaged DNA or signals cell apoptosis. A faulty or mutated p53 gene can lead to unregulated cell division and cancer. Over half of human tumors are associated with p53 gene mutations.
Explanation:
The p53 gene functions as a crucial tumor suppressor, often described as the "guardian of the genome". It has a significant role in preserving stability by preventing genome mutation. The p53 protein, encoded by this gene, is a multifunctional transcription factor that is activated in response to DNA damage and cellular stress. It operates primarily at the G1 checkpoint in the cell cycle, where it assesses the integrity of DNA before allowing the cell to continue to the next phase of division.
When DNA damage is detected, p53 triggers repair mechanisms and can induce cell cycle arrest, facilitating DNA repair by activating various genes. If repairs are unsuccessful, p53 can signal for apoptosis (programmed cell death), preventing the propagation of damaged DNA. Conversely, when the p53 gene is mutated, its function is impaired, potentially allowing damaged DNA to remain uncorrected and leading to cancer development.
More than 50 percent of human tumor cells have been associated with mutated p53 genes, which underscores the gene's vital role in cancer prevention. The p53 protein also ensures that cells with irreparable damage do not continue to divide, and can shift cellular energy pathways, highlighting its importance in cellular metabolism and growth regulation.
Write your own 1-2 sentences that explains how the following words are related: Traits, Genes. Alleles. Here
Answer:
Except in some viruses, genes are made up of DNA, a complex molecule that codes genetic information for the transmission of inherited traits. Alleles are also genetic sequences, and they too code for the transmission of traits. ... The short answer is that an allele is a variant form of a gene.
Explanation:
It says write your own. I think it would be better for you to make it but here
Answer:
They all include on what you have as a dominant trait.
Explanation:
Which of these would spread seeds?
A
a chipmunk not touching a plant at all as it moves through the forest
B
a squirrel finding an acorn buried in the ground and digging it up to eat
C
a bird getting seeds stuck in its feathers as it moves around the woods
D
a plant’s leaves starting to dry up because it doesn’t have enough water
PLEASE HURRY!!!!!!!!!!!
Answer:
The answer is c, becuase the seeds will get caught in the birds feathers, the bird will carry the seeds and the seeds will pollinate everywhere
Explanation:
Final answer:
A bird getting seeds stuck in its feathers as it moves around the woods (Option C) is the correct answer, as this represents a form of external seed transportation and dispersal.
Explanation:
The correct answer that represents an animal actively involved in seed dispersal is: C. a bird getting seeds stuck in its feathers as it moves around the woods
This is because animals and birds can spread seeds in various ways. One such way is through external transportation, where seeds stick to the animal's fur or feathers. The seeds can then be transported to different locations, increasing the geographic range of the plant species. For example, some fruits, like the cocklebur, have hooks or sticky structures designed to adhere to an animal's coat.
Other methods of seed spreading include animals burying seeds like squirrels stashing away acorns, which may later germinate if the animal forgets its cache. Moreover, when animals and birds consume fruits and the seeds pass through their digestive system undigested, they can be excreted in their droppings, sometimes far from the original source, leading to the spread of seeds.
how to both plants and animals fight pathogens
A Antigens
B Antibodies
C Marcrophages
D pathogens
Answer:
Both plants and animals fight pathogens with the help of Antibodies
Explanation:
It is also referred as the immunoglobins, they are of Y shaped. Generally they are proteins that has been produced by the plasma cells which are being used by the immune system so as to neutralize pathogens like bacteria as well as virus. They are helpful in fighting with the germs but at times it starts acting against the bodies healthy cell these also reduces the person’s immune system. There is a test that checks how the antibody is working against the red blood cells i.e. Coombs test. Antibodies can be found in the body fluid as it moves through the bloodstream.
Which can have the most impact on an ecosystem
watasemenes
Watural wees
abundante
volcanice
Answer: Volcanice
Explanation: it distrupt the entire ecosystem whereby leading displacement of organisms and loss of biodiversity as well as causing some organisms to be extinct. it is a natural disaster that causes havoc to the ecosystem.
Yo sup??
the correct answer is option D ie
volcanice
these are great threats to the ecosystems and affect it adversely
Hope this helps
(36 POINTS+BRAINLYEST IF CORRECT)
If two animals can reproduce and produce fertile offspring, then they are members of the same ________________.
population
ecosystem
species
community
Answer:
species
Explantion:
Answer:
species
Explanation:
a. The dependent variable in this investigation is the: (circle the
correct answer) [1]
(1) size of the test tube
(2) time of digestion
(3) amount of stomach fluid
(4) amount of protein digested
Other than passing genes from parents to offspring, bacteria are also capable of injecting their genes directly into other bacteria. Using complete sentences, explain how this speeds up the process of evolution in bacteria using either inherited variation, competition, or differential reproductive success.
Explanation:
Bacteria usually divides by fission. This produces offspring that are the exact copies of the parent unless a mutation occurs in the offspring.
Occasionally, however, bacteria cells exchange genetic material through conjugation. This exchange is akin to crossing over in higher organisms, result in genetic recombination of the bacterial DNA. This increases genetic diversity of the bacteria cells in the population. This genetic diversity improves the population's success in adapting to changes in the environment.
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What is the structure labeled E in the diagram below?
Answer:
I think E is Cytoplasm
Explanation:
sorry if it is wrong i learned this 4 years ago so I'm a little rusty.
The labelled E in the structure is cytoplasm.
What is cytoplasm?The cytoplasm is the gel-like fluid inside the cell. It is the medium for chemical reaction. It provides a platform upon which other organelles can operate within the cell. All of the functions for cell expansion, growth and replication are carried out in the cytoplasm of a cell.
Cytoplasm is a thick solution that fills each cell and is enclosed by the cell membrane. It is mainly composed of water, salts, and proteins. In eukaryotic cells, the cytoplasm includes all of the material inside the cell and outside of the nucleus.
The cytoplasm is responsible for holding the components of the cell and protects them from damage. It stores the molecules required for cellular processes and is also responsible for giving the cell its shape.
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Why the nucleus of a sperm cell is different from the nucleus of body cells?
Answer:The sperm is a gamete, which means it is a haploid cell. Thus, the nucleus will contain half the number of chromosomes the other body cells contain.
Explanation:
The difference between the nucleus of a sperm cell and the nucleus of body cells is : The nucleus of the sperm cell contains one set of chromosomes while the body cells contains two sets of chromosomes in its nucleus
The sperm cell ( gamete ) is a haploid cell therefore it contains only one set of chromosomes, in its nucleus while other body cells ( diploid cells ) contain two sets of chromosomes in their nucleus.
For example ; The Somatic cells ( diploid cell ) contains 46 chromosomes in its nucleus while the human sperm cell ( haploid cell ) contains 23 chromosomes in its nucleus.
Hence we can conclude that the difference between the nuclei of sperm cell and body cells is the number of chromosomes they contain
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Why do individual water masses within the oceans retain distinctive physical properties for long periods?
Water's polarity and unique properties, such as high heat capacity and heat of vaporization, enable individual water masses within the oceans to retain distinctive physical properties for long periods.
Explanation:Water's polarity allows for the formation of hydrogen bonds between adjacent water molecules, resulting in many unique properties that are critical to maintaining life. For example, water is an excellent solvent because hydrogen bonds allow ions and other polar molecules to dissolve in water. Water's hydrogen bonds also contribute to its high heat capacity and high heat of vaporization, resulting in greater temperature stability. Hydrogen bond formation makes ice less dense as a solid than as a liquid, insulating aquatic environments. Water's cohesive and adhesive properties are seen as it rises inside capillary tubes or travels up a large tree from roots to leaves. The pH or hydrogen ion concentration of a solution is highly regulated to help organisms maintain homeostasis; for example, as will be explored in later chapters, the enzymes that catalyze most chemical reactions in cells are pH specific. Thus, the properties of water are connected to the biochemical and physical processes performed by living organisms. Life on Earth would be very different if these properties were altered—if life could exist at all.
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Which substance is a natural land resource used in construction?
O steel
O bedrock
clay
salt
Answer:
Pretty sure it is Bedrock my good fellow.
Explanation:
The substance that is a natural land resource used in construction is clay. The correct option is C.
What is clay?Clay is a kind of soil that is composed of mineral particles that are fine and dense. The properties of clay are influenced by its mineral content, and it is generally used in building because of its versatility and low cost. It can be used to make bricks, tiles, and other building materials.
Clay soil is the natural land resource which is used widely in the construction.
Clay is used as an additive in mortar and plaster in addition to being a primary building material. Clay soil is sometimes used to fill in low spots or pits around homes, as well as in landscaping and gardening. So, the correct answer is clay.
Therefore, the correct option is C.
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define the role of the sun in providing energy for living things on earth?
Answer: The Sun is the major source of energy for organisms and the ecosystems of which they are a part. Producers, such as plants and algae, use energy from sunlight to make food energy by combining carbon dioxide and water to form organic matter. This process begins the flow of energy through almost all food webs
Answer:
The sun provides us energy from a process called nuclear fusion
Explanation:
Fusion heats the sun so the sun can give us energy.
Why is it important that the
substance DNA is placed in for
electrophoresis be porous?
It important that the substance DNA is placed in for electrophoresis be porous because,
DNA are placed in the electrophoresis gel, so that the pores present can limit or check the movement of the DNA by creating a surrounding in which individually DNA fragment rate of motion can vary based upon their length. The gel is nothing but a permeable matrix. The motion of charged molecule defined as the migration. The molecules migrate towards the opposite charge. The molecule having negative charge will be attracted towards the positive charge.
The porous substance in electrophoresis facilitates movement of charged particles, ensuring accurate separation based on size or charge differences.
It's important for the substance used for electrophoresis to be porous because electrophoresis relies on the movement of charged particles through a medium under the influence of an electric field. Porous substances allow the charged particles, such as DNA fragments, to move through the medium more easily, facilitating separation based on size or charge. If the substance were not porous, the movement of charged particles would be hindered or even prevented, resulting in inaccurate or incomplete separation during electrophoresis. Thus, the porosity of the substance ensures efficient and effective separation of DNA fragments based on their size or charge differences.
Why is the equation not the equation of a line of best fit for the data set below?
Age (years)
23
45
39
74
63
52
59
28
35
11
26
49
IQ
76
82
113
111
109
115
101
127
92
123
128
99
A.
The slope of the line is negative, but the data set has a positive correlation.
B.
The slope of the line is positive, but the data set has a negative correlation.
C.
The y-intercept of 107 will not produce a line that "centers" the scatter plot.
D.
The data set has no correlation and cannot be accurately represented with a linear equation.
Answer:
D.
Explanation:
The data set has no correlation and cannot be accurately represented with a linear equation.
there seems to be no relation between the numbers
if you know the x value, you can't really guess what its y value is (no correlation)
different between dicotyledons and monocotyledons
Answer and Explanation:
monocotyledons dicotyledons
The seed has one cotyledon Seed has two cotyledonsLeaves are usually long and narrow Leaf shape is variedLeaf venation is parallel Leaf venation is reticulateVascular bundles are irregularly Vascular bundles aredistributed within the stem concentrically arranged
Root system is fibrous and shallow Root system is much branchedEach pollen grain usually has three Each pollen grain has only onepores. pore.
Both mitosis and meiosis begin with a parent cell that is diploid. Which of the following best describes how mitosis and meiosis result in daughter cells with different numbers of chromosomes
Answer:
meiosis you will have four haploid cells (half the number of chromosomes is a diploid cell) and after mitosis you will have two diploid cells
Explanation:
Mitosis you begin with a parent cell that is haploid, it copies all it's chromosomes and splits so each daughter cell have the same number of chromosomes as the parent cell so both being diploid
In meiosis the chromosomes fold over DNA and are put in pairs, in the first division the pairs are split up evenly into two cells randomly (diploid still) but the the cells split the chromosomes in half in them creating four grneticly different haploid cells
Mitosis and meiosis are the two types of cell division. In mitosis, the parent cell forms two daughter cells that are genetically alike and have the same number of chromosomes.
In meiosis germ cell divides into four gametes with half the number of chromosomes, they take place in reproductive cells.Both mitosis and meiosis begin with a diploid parent cell. In mitosis, the parent cell is a haploid that divides and forms two equal daughter cells that have the same number of chromosomes. So both the parent and daughter cells are diploid.In meiosis, the chromosomes get divided into two equal daughter cells but again a division occurs and the chromosomes get divided into half. This results in the formation of four daughter cells which are haploid in nature.Therefore, in mitosis, you will get two diploid daughters and in meiosis, you will get four haploid daughter cells.
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2. Which pair of structures are homologous?
a. Wing of an insect and wing of a bird
b. Tentacle of a hydra and flipper of a whale
c. Front leg of an insect and bones in the leg of a human
d. Bones in the front leg of a dog and bones in the wing of a bat
Answer:
a, c, d
Explanation:
A dolphin's flipper, a bird's wing, a cat's leg, and a human arm are considered homologous structures, so other structures that are like these can be considered homologous.
The pairs that have homologous structures are
a. Wing of an insect and wing of a bird.
c. The front leg of an insect and bones in the leg of a human.
d. Bones in the front leg of a dog and bones in the wing of a bat.
What are homologous organs?Homologous organs are those organs that have similar functions, but they have different structures, and they are very different organisms. Their time of evolution is also changed and different.
A wing of an insect and the wing of a bird are very different. The wing of a butterfly is made of a thin layer with veins and a bird's wings are made up of feathers, and they are bigger than a butterfly. But their functions are very similar.
So the front leg of an insect and bones in the leg of a human and bones in the front leg and wings of a bat have similar functions.
Thus, the correct options are a, c, and d.
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