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3 years ago

This is urgent; please answer quickly.

Biology

1 answer:

rusak2 [61]3 years ago

7 0

Answer:

The correct answer is option C. the movement of water from the central vacuoles of the cells into the solution.

Explanation:

In the given question onion cell was initially in 1% NaCl solution later student increase the concentration of the NaCl in the solution which makes the solution hypertonic.

A hypertonic cell is a solution with less water or more solute. Increasing salt concentration makes solute concentration high than inside the cell. Cell shrink in this case due to the osmosis or water movement from the high concentration region of water to the low concentration of water region.

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Mating rituals or displays can be very complex but are also _______ behaviors.

miv72 [106K]

Answer:territorial

Explanation:

Because I said so

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4 years ago

How does matter flow through an ecosystem?

goldenfox [79]

Answer: When one organism eats another, the matter, or carbon, nitrogen, and other essential elements, are transferred from one to the other. These elements move from the producers, to the consumers, and eventually to the decomposers, cycling the matter through the ecosystem.

Explanation:

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3 years ago

The table lists some human activities. A student claimed that out of these activities, sleeping is the only activity in which en

anastassius [24]

Answer:

Explanation:

In every action you make you use energy, when you sleep you still have to breathe and regulate tempetaure. If you stopped giving energy to your cells as you sleep you not be able to breathe.

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3 years ago

What is the name of the tallest tree in the world?

AnnZ [28]

Hi there!

This answer entirely depends on what you mean. The largest type(species), or the largest known? Well, either way, I have an answer for you.

The largest type is a Hyperion.

The largest KNOWN is The General Sherman Tree! And it's still growing. At the base, its circumference is 31 meters.

Have a nice day!

4 0

2 years ago

Suppose the human trait for freckles is controlled by a simple dominant and recessive relationship at one locus. Freckles, F, is

Dennis_Churaev [7]

Answer:

0.549 is the frequency of the F allele.

0.495 is the frequency of the Ff genotype.

Explanation:

FF or Ff genotypes determine freckles, ff determines lack of freckels.

In this class of 123 students, 98 have freckles (and 123-98= 25 do not).

If the class is in Hardy-Weinberg equilibrium for this trait, then the genotypic frequency of the ff genotype is:

q²= 25/123

q²=0.203

q= $\sqrt{0.2$

q= 0.451

q is the frequency of the recessive f allele.

Given p the frequency of the dominant F allele, we know that:

p+q=1, therefore p=1-q

p=0.549 is the frequency of the F allele.

The frequency of the Ff genotype is 2pq. Therefore:

2pq=2×0.549×0.451

2pq=0.495 is the frequency of the Ff genotype.

5 0

3 years ago