You are curious about why you see people drinking shots of cold brew coffee before they work out. you design an experiment to study the relationship between caffeine and muscle contraction using a living nerve and muscle preparation. you find that adding caffeine to the solution bathing the tissues causes an increase in intracellular ca2+ concentration in muscle fibers. based on this finding, what effect do you predict caffeine will have on muscle contraction? your answer should demonstrate an understanding of the role of ca2+ in muscle contraction. assume that atp levels are sufficient for muscle contraction/relaxation and that the elevated ca2+ does not activate proteases and lipases.

state the principle of separating two immiscible liquids by separating funnel. describe an activity with diagram to separate a mixture of water and kerosene oil. answer: immiscible layers separate out in layers depending on their densities in separating funne

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.

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explanation:

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