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3 years ago

A solution high in salt content will have what affect on a plant cells vacuole?

2 answers:

6 0

Due to osmosis water molecules move from a region of higher water potential to a region of lower potential, so water molecules will move from the vacuole to the salt solution. This causes the cell to become soft and flaccid, turgor pressure will also be lost

EleoNora [17]3 years ago

4 0

Answer:

In this case, the solute concentration of the external medium is higher than that of the vacuole, which means the solute potential of the external solution is lower (more negative). Then the vacuum will lose water to reach the water balance, the volume of the protoplast will be reduced and will tend to adopt the smallest surface area per unit volume, that is, the spherical shape, and separate completely from the cell wall (cell is plasmolyzed)

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A haploid human genome consists of 3 billion base pairs. If the distance between each base pair is 0.34 nm (a nanometer is one b

rosijanka [135]

Answer:

The answer is 6.8 meters.

Explanation:

During the S phase of the cell replication, the DNA is doubled before the division of the cell which means that it is twice it's original length.

At 0.34 nanometers, 3 billion base pairs (3.000.000.000) comes up to 3.4 meters and during the S phase the length is doubled so it is 6.8 meters long.

I hope this answer helps.

6 0

3 years ago

Fred notices that all of his friend's brothers and sisters have dark hair. What is the most likely explanation for this characte

Ksenya-84 [330]

Answer:

They have identical genes.

Explanation:

Hope it helps

8 0

3 years ago

An experiment is being carried out to observe the melting of ice. Heat energy is being supplied at a constant rate. The temperat

oksano4ka [1.4K]

Answer:

thoughout the experiments the ice starts showing sings of melting

Explanation:

7 0

3 years ago

A bacterial genome is typically a single linear piece of DNA. multiple linear pieces of DNA. a linear RNA molecule. a single cir

Schach [20]

Answer:

The correct answer is Single Circular DNA Molecule.

Explanation:

A bacterial genome, which is the DNA that is found in bacteria collectively, is a double stranded circular DNA. So it has no start and end like double stranded helix DNA. The option D, which is "Single Circular DNA Molecule" is correct.

I hope this answer helps.

6 0

3 years ago

Suppose that an adult black bear adds 50 pounds of fat in order to survive while hibernating through the winter. how much glycog

NemiM [27]

Answer: The correct answer would be 112.5 pounds

Explanation:

Let us first covert the pound into grams. We know that 1 pound is equal to 453.59 grams.

Thus, 50 pound of fat = 50 x 453.59 = 22,679.5 grams.

We know that, 1 gram of fat releases 9 Kcal of energy. Thus, total energy produced by 22679.5 grams = 9 x 22679.5 = 204,115.5 Kcal

Glycogen is carbohydrate thus, it will produce 4 Kcal of energy per gram.

Thus, 4 x C = 204,115.5 (where C is the grams of glycogen)

⇒ C = $\frac{204115.5}{4}$

⇒ C = 51,028.875 grams

Using 1 pound = 453.59 grams, we con convert 51,028.875 grams into pounds:

453.59 = 1

1 = $\frac{1}{453.59}$

51,028.875 = $\frac{1}{453.59} x 51028.875$

= 112.5 pounds

Thus, 112.5 pound of glycogen would be needed to produce the same amount of energy as produced by 50 pounds of fat.

8 0

3 years ago