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olchik [2.2K]
2 years ago
15

Why is it important for a cell to control what enters and leaves its structure?

Biology
1 answer:
AfilCa [17]2 years ago
7 0

Answer:

If a cell can't control what enters and leaves its structure, harmful and foreign substances can get into the cell and obstruct cell activity.

Explanation:

Mark brainliest if possible and have a great day : )

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Why do you think leaves have stomata on their underside only? Explain.
Alexandra [31]
The stomata must be open during the daylight hours to let oxygen and carbon dioxide pass through. While they are open, water vapor escapes into the atmosphere (transpiration). ... Transpiration is the loss of water through stomata, so, more stomata are found on the lower surface to prevent excessive loss of water.

In a lotus plant, stomata is found on the upper epidermis of the leaf.

Stomata are responsible for the exchange of gas with the surrounding atmosphere of the leaf. Their guard cells stay taut during the day to keep the stoma open.

Guard cells can only stay open if they are saturated with a certain quantity of water.

From this information we can infer that stomata are typically found on the lower epidermis to prevent water damage when it rains.

The rain would not only cover the openings, it would also ruin the osmotic balance of the guard cells causing inefficiency and damage to the cycle of gaseous exchange.

Natural selection probably selected against such plants giving rise to those with stomata on the underside.
7 0
2 years ago
Genetic variation ________. Genetic variation ________. is created by the direct action of natural selection tends to be reduced
taurus [48]

Answer: Natural selection can act on traits determined by alternative alleles of a single gene ... hope this helps, this is one of many answers for this question!

6 0
3 years ago
Based on what we know about meadow voles (i.e., they do not form pair-bonds and have multiple mating partners), which peptide ho
Jobisdone [24]

Answer:

Vasopressin.

Explanation:

Vasopressin hormone also known as anti-diuretic (ADH) hormone that regulates the tonocity of the body and maintains the fluid composition. This hormone is released from the posterior pituitary.

The vasopressin is a peptide hormone that plays an important role in the human beings. The promiscous males have multiple sexual partner and this decrease the amount of vasopressin in these males as compared with the monogamous males as vasopressin also regulates the sexual function in humans.

Thus, the answer is vasopressin.

5 0
2 years ago
What are building blocks of lipids
Alona [7]

Answer:

Explanation:

One glycerol molecule and at least one fatty acid, with a maximum of three fatty acids. Glycerol is a sugar alcohol with three OH groups.

7 0
2 years ago
Read 2 more answers
Explain why the plant with the mutated psaB gene was dying
erik [133]

As given in the graph, mutation in this gene causes a decline in the production of glucose as it obstruct the process of photosynthesis.

<h3>What is psaB gene?</h3>

P700, the primary electron donor of photosystem I (PSI), as well as the electron acceptors A0, A1, and FX, are bound by PsaA and PsaB.

As given in the graph, mutation in this gene causes a decline in the production of glucose as it obstruct the process of photosynthesis.

Thus, the plant with the mutated psaB gene was dying.

For more details regarding plant mutation, visit:

brainly.com/question/8582748

#SPJ1

4 0
2 years ago
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