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lorasvet [3.4K]
3 years ago
14

What form of vitamin d is the major circulating form with a half-life of approximately 3 weeks?

Biology
1 answer:
Brilliant_brown [7]3 years ago
8 0
<span>The correct answer is calcifediol or calcidiol.</span>
<span>It is a prehormone that is produced in the liver. The mechanism of production includes hydroxylation of vitamin D3 (cholecalciferol) by the enzyme cholecalciferol 25-hydroxylase. Because it is the major form of vitamin D in the blood, it is considered the best indicator of vitamin D status. Calcidiol is converted in the kidneys into calcitriol which is the active form of vitamin D. </span>
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What causes ocean water to be colder at the poles than at the equator?
aliya0001 [1]
I am sure that the answer is D
6 0
3 years ago
7. White wool (WW, Ww) and brown eyes (BB, Bb) are dominant traits in sheep, while black wool (ww) and blue eyes (bb) are recess
artcher [175]

Answer:

1/2 wWBb , White wool and brown eyes.

1/2 wWbb , White wool and blue eyes.

Explanation:

White wool (W) is dominant over black wool (w).

Brown eyes (B) is dominant over blue eyes (b).

A sheep with black wool (ww) and brown eyes (Bb) is crossed with a sheep with white wool (WW) and blue eyes (bb).

<h3>wwBb x WWbb</h3>

If there is independent assortment between genes, the genotypes of the first parent's gametes will be wB and wb. The gametes of the second parent can only be Wb.

<u>The resulting offspring will be:</u>

  • 1/2 wWBb , White wool and brown eyes.
  • 1/2 wWbb , White wool and blue eyes.

6 0
3 years ago
Assessing biodiversity:
Helen [10]

Answer:

The correct answer will be option-A

Explanation:

Biodiversity refers to the diversity of the biological entities present in an ecosystem. Biodiversity has a wide spectrum which not only includes the number of the diversity of the organism but also the interaction between them.

The biodiversity is assessed to study the changes that are taking place in an ecosystem, to study the causes and how the changes affect the human well being.

The assessment decisions ignore the personal interests and the biasness as the aim of the approach is not fulfil the personal needs but to maintain sustainable management of the ecosystem.

Thus, option-A is the correct answer.

8 0
3 years ago
Are all these forces balanced or unbalanced?
andreev551 [17]

Answer:

Balanced

Explanation:

Both forces add up to 380N.

5 0
3 years ago
The cell in this part of a plant transport water and nutrients throughout the plant. what is the most likely structure of specia
deff fn [24]

Answer:

I think the answer the will be option

a) the cells form long vertical tubes

Explanation:

This is because xylem transports water and minerals throughout the plant and they are long and vertical tubes

3 0
3 years ago
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