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3 years ago

Which of the following chemicals opens us binding sites allowing muscle filaments to connect to each other? Select one:

Biology

1 answer:

HACTEHA [7]3 years ago

3 0

Answer:

The correct answer will be option-D.

Explanation:

Calcium plays an important role in muscle contraction as they are released from the sarcoplasmic reticulum after they receive electric impulse.

Calcium triggers the muscle contraction cycle as these calcium ions bind to the troponin-tropomyosin complex. This binding exposes the myosin-binding site on the actin on which high energy myosin binds and cross-bridge is formed.

This cross-bridge formation causes the contraction of the sarcomere and therefore muscle contracts.

Thus, option-D is the correct answer.

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Which of the following is an indication that a planet may exist near a distant star?

Lina20 [59]

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3 years ago

To solve a problem using the equation for Kepler’s third law, Enrico must convert the average distance of Mars from the Sun from

vovikov84 [41]

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Explanation:

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Enrico must multiply the distance of mars from sun (meters) with the $6.6844\times 10^{-12}$ to convert the distance in astronomical units.

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3 years ago

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3 years ago

Brown (B) hair is dominant over Blonde (b) hair. If a person who is BB has children with a person who is BB, what would be their

Shalnov [3]

Answer:

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Explain why the smell of a hospital or dentist's office can bring about negative emotions, and why the smell of baking cookies o

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Answer:

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Explanation:

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1 year ago