Yeah it is true water enters through tiny pores oscula and release through osculum
When a person is exercising the blood is shifted from skeletal muscles into the systemic circulation. Skeletal muscle is one of the three major muscle type the other two is smooth muscle and cardiac muscles. Most most the skeletal muscle is attached to the bones by tendons.
Enzymes speed up all of the reactions that happen inside cells. They help with digestion and our metabolism. Enzymes can do a few different things like:
Break up big molecules into smaller pieces, so they can be absorbed more easily by the body.
Enzymes also are very picky catalysts, and will only “speed up” certain types of reactions.
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I think the answer is B
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Scientists often perform experiments to check and recheck their work. They also redo these experiments to ensure correct results.