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Both external respiration and internal respiration takes place in capillaries.
Q4: The body identifies normal body cells by
Q5: Strong evidence supports the usefulness of vitamin
Q18: The chief cells,located in the stomach,secrete hydrochloric
Q24: Fats produce more than twice the amount
Q28: Heat released in catabolism is used as
Q44: Just as there are essential amino acids,there
Q78: initial stage of the general adaptation syndrome<br>A)Stage
Q79: Antigens activate B cells.
Q84: The partial pressure of oxygen in the
Q167: Just as all of the circulatory system