Muscle contraction is triggeredA) in response to an increase in the cytoplasmic Ca2+concentration. B) in response to a decrease in the cytoplasmic Ca2+concentration. C) in response to an increase in the cytoplasmic cAMP concentration. D) in response to a decrease in the cytoplasmic cAMP concentration. E) in response to an increase in the cytoplasmic titin concentration.

A) in response to an increase in the cytoplasmic Ca2+concentration.

Explanation:

Muscle contraction occurs in response to an increase in the cytoplasmic Ca2 + concentration.

This process occurs with the shortening of the sarcomeres resulting in a result, the actin filaments react with myosin, generating actomyosin. During this reaction, it is necessary to increase the cytoplasmic concentration of Ca + and ATP. In this, myosin will break down ATP, releasing energy so that the muscle can contract.

coral.

explanation:

coral. many marine organisms that produce calcium carbonate shells or skeletons are negatively impacted by increasing co2 levels and decreasing ph in seawater.

the positions which points up in upward carbon and down in downward carbon are axial

and vice versa holds true for equatorial positions

so the correct answer with labelled diagram will be