. The characteristic striated (striped) appearance of skeletal muscle is due to the arrangement alternating protein filaments. These filaments are composed of:
A. ATP and myofibrils
B. Myosin and Actin
C. Motor neurons and acetylcholine
D. Calcium and myofibrils

activation of phospholipase c (plc) indirectly increases intracellular ions through inositol triphosphate (ip3).

answer:

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explanation:

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violet light has a shorter wavelength than blue light. violet light is scattered more than blue light. however, the human eye is less sensitive to violet than to blue. as a result, we perceive a blue sky instead of a violet sky.