About how many step can motor proteins take per second

A hundred steps

Explanation:

Biophysicists responded to how proteins move through live cells.

Proteins participate in practically all processes in the body, they are biomolecules with the most diverse functions: structural, storage, transport, catalytic, defense, etc. Also, proteins are needed for the body to create a whole range of enzymes, hormones, and antibodies. For example, proteins include hemoglobin, insulin, collagen, keratin.

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.