Answer:
Once an organism is beyond a certain size, it cannot get essential molecules into and out of cells solely by diffusion. Diffusion is limited by the surface area to volume ratio of the organism.
Answer:
Answer is C
Explanation:
Each cell has an identical copy of DNA with enzymes controlling the expression of specific genes leading to a variety of cells
Stalks of wheat are displayed during harvest season as symbols of fertility, life and abundance is the best example of non-science. Thus, option B is correct. since the selective breeding of wheat grains is science term.
<h3>
What is selective breeding?</h3>
Selective breeding which applies artificial selection by human when they can control breeding process of organisms in order to introduce or eliminate a desirable character or trait.
Majority of breeding focuses on the beneficial traits for humans, where the beneficial trait pass from parent to offspring via genes.
The desirable phenotypic traits are passed from parents to offspring via their genes.
Th drawbacks of selective breeding in some case the undesirable traits which cause hereditary and health problems.
Learn more about selective breeding, here:
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It is true that uni-potent stem cells can only produce cells that are like themselves
Answer: Option B
<u>Explanation:</u>
Uni potent cell as their name suggests can only produce cells that are just like themselves. Compared to the other stem cells that undergo proliferation this produces a tissue of that particular type alone.
Though it can’t be of much use like other cells giving rise to different cell types this is confined to the generation of one particular tissue. The uni-potent cells help to renovate and recreate themselves too. Hence any damaged tissue can be replaced by the uni-potent cell giving rise to the same tissue in case of burns etc.
