All categories

2 years ago

What is required to initiate the coupling of myosin to actin?

Biology

1 answer:

VladimirAG [237]2 years ago

6 0

Answer:

<h2>Calcium ions</h2>

Explanation:

The actin and myosin are the myofilaments which are involved in the contraction and relaxation of the muscle. The actin is thin filaments and contains the attachment site for the myosin but the site is blocked by the tropomyosin and troponin proteins.

When calcium ions present in the muscle binds to the troponin molecules, it changes the conformation of the tropomyosin. This change exposes the attachment site of the myosin and then the myosin binds the troponin and causes Powerstroke and leads to contraction of a muscle.

Thus, Calcium ions is correct.

You might be interested in

The M phase of the cell cycle consists of both mitosis and cytokinesis. Mitosis refers to ______________, whereas cytokinesis re

Fed [463]

The company is a little bit better than a regular basis and the food was Avery but it was not

5 0

2 years ago

Where did the First potato grow

Ymorist [56]

Answer:

Peru

Potato Facts: Origins of the Potato

The Inca Indians in Peru were the first to cultivate potatoes around 8,000 BC to 5,000 B.C. In 1536 Spanish Conquistadors conquered Peru, discovered the flavors of the potato, and carried them to Europe.

Explanation:

Hope this helps!!!!!

Forever friend and helper,

Cammie:)

3 0

2 years ago

Read 2 more answers

Every cell in an animal is separated from other cells and from the extracellular

crimeas [40]

Answer:

Cellular Fluids and Organelles

Explanation:

Hope this helped

3 0

2 years ago

Read 2 more answers

Who is father of biology

olya-2409 [2.1K]

Aristotle is the father of biology

8 0

1 year ago

Read 2 more answers

Both insects and roundworms exhibit ______, whereas sponges, snails, and leeches do not.

erik [133]

I think the correct answer from the choices listed above is option A. Both insects and roundworms exhibit molting during growth, whereas sponges, snails, and leeches do not. It is the process of shedding old feathers, hair or skin to make way for new growth.

6 0

2 years ago