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KATRIN_1 [288]
3 years ago
15

Tadpoles must undergo a major metamorphosis to become frogs. This change includes reabsorption of the tail, growth of limbs, cal

cification of the skeleton, increase in rhodopsin in the eye, development of lungs, change in hemoglobin structure, and reformation of the gut from the long gut of an herbivore to the short gut of a carnivore. Amazingly, all of these changes are induced by thyroxine. What is the most likely explanation for such a wide array of effects of thyroxine?
Biology
1 answer:
nevsk [136]3 years ago
4 0

Answer:

There are many receptors for thyroxine on different target cells (tissues), so its effect can be huge

Explanation:

Target cell for a certain hormone is a cell that have hormone receptor specific for that hormone. There are two main types of receptors on target cell:

  • cell membrane receptors (also called  trans membrane receptors)-usually for peptide hormones, such as insulin
  • intracellular receptors (also called nuclear receptors)-usually for steroid hormones, such as testosterone.

Hormone binding to the receptor leads to the signal cascade within the cell, which results in cell response.

Receptors for thyroid hormones are nuclear receptors.

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Why are the large finches now living on the galápagos islands different from the original source population from a nearby islan
Softa [21]

Answer:

The reasons are explained below -

Explanation:

The large finches living on the Galapagos islands are different from the original source population from a nearby islands because of the following reasons -

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  • A genetic drift has been occurred in the two populations living on the nearby islands.
  • Due to the separation of habitat on both the islands, the gene flow between the two islands is reduced.

All the above listed reasons are responsible for the difference in the finches found on the two islands.

3 0
3 years ago
Meiosis II must take place because each of our new cells still has too much _________.
neonofarm [45]
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(Hope this helps!!)
6 0
3 years ago
What do you already know about conservation? Think about wildlife and the environment
Elenna [48]

Answer:

Wildlife is living organisms, like plants and animals that live anywhere in the world that they are not isolated in a certain area.

Explanation:

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Hope it helps:)

4 0
3 years ago
Why are diuretics an unhealthy way to lose weight? A. They speed up the digestive process, reducing the absorption of vitamins.
ANEK [815]
I think the correct answer among the choices listed above is option D. Diuretic is an unhealthy way to lose weight because it get<span> rid the body of fluids as well as nutrients. This method involves taking drugs that will cause an increase in the passing of urine.</span>
4 0
3 years ago
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Microtubules are long,hollow protein cylinder that form a rigid skeleton for the cell
ivolga24 [154]
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~Jurgen
8 0
3 years ago
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