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2 years ago

PLEASE EXPLAIN IT'S FOR A QUIZ TOMORROW!!!!!!!!!!!

Biology

2 answers:

kow [346]2 years ago

8 0

Answer:

c. is the correct answer

Explanation:

brainliest please?

Norma-Jean [14]2 years ago

3 0

I hope this helps you with your question.

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When plants are stressed by dry conditions, they secrete the hormone abscisic acid (ABA) and in response the stomata close, even

dimaraw [331]

Answer:

C. K+ ions flow out the the guard cells and water flows out the cells.

Explanation:

The turgidity of the guard cells allows the opening and closing of the stomata. This is especially necessary when it comes to water conservation in plants. In order for the cells to become turgid or flaccid, there must be the influx and out ward movement of water via osmosis.

In order for this the occur the osmotic pressure of the cellular environment must change and this is done by changing the solute concentration.

The pumping in of K+ ions out the cell allows the solute concentration to decrease and this in turn encourages the movement of water across a concentration gradient through a semi-permiable membrane.

The water leaves the guard cells and they become flaccid. This causes the stomata to be covered.

4 0

3 years ago

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Short notes on dispersal of seed

Alenkasestr [34]

Explanation:

Seed Dispersal is an adaptive mechanism in all seed-bearing plants, participating in the movement or transport of seeds away from their parent plant to ensure the germination and survival of some of the seeds to adult plants. There are many vectors to transport the seed from one place to another.

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2 years ago

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The Ebola virus enters a human through the openings in the body or through the skin itself. Once inside, the virus attaches to a

agasfer [191]

<h2>Answer: How does the Ebola virus infect people?</h2>

Ebola virus contains a type of genetic material called RNA, which is similar to DNA and contains the blueprint for assembling new virus particles. Unlike animals and plants, which also use DNA as a repository of information, viruses are not technically alive because they are incapable of replicating without help. In order to create new viruses, the virus must infiltrate a living cell, where it hijacks the host cell’s machinery to fulfill its own goals. In order to get into the cell, Ebola must travel through the cell membrane, which is a barrier that protects the cell from its environment. However, all cells need nutrients, which must have ways of entering the cell; the viruses hitch a ride into the cell via one of these established nutrient-uptake entryways. Ebola virus takes advantage of a non-specific engulfing process called macropinocytosis, which allows the virus to be “eaten” by a wave-like motion of the cell membrane (Figure 1) [2].

Explanation:

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3 years ago

We would expect cells found in the active muscles of animals to contain relatively large amounts of which cellular organelle? A)

Mars2501 [29]

Answer: B.) Mitochondria

Explanation:

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2 years ago

In part A, you analyzed genes that contribute to two diseases. How can scientists use this information to develop new treatments

Sergeeva-Olga [200]

Answer:

Yes scientist will need to develop multiple treatments to control symptoms.

Explanation:

because if they only do one treatment it may not work for everyone because some people could be allergic to that one treatment that's why there are multiple treatments.

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3 years ago