________ cells in the gastric glands produce the hormone gastrin.
What will be an ideal response?
Answer: G
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Membrane fluidity can be increased by __________ of the plasma membrane
A) Increasing the lengths of fatty acid chains B) Decreasing the number of double bonds in the fatty acids C) Decreasing the phosphatidylcholine to phosphatidylethanolamine ratio D) Decreasing the cholesterol content Fill in the blank with the correct answer.
After hyperventilating for several minutes, a person may develop short periods of apnea because
A. oxygen in the lungs has not had time to diffuse into the blood. B. blood pH would drop and inhibit inspiration. C. blood pH will rise and stimulate expiration. D. the level of oxygen has increased and inhibits the inspiratory center. E. the level of CO2 decreases below the level necessary to stimulate the inspiratory center.
The action potential moves from the sarcolemma surface deep into the myofiber via the ______.
Fill in the blank(s) with correct word
Choose the correct pairing of macromolecule type to its function
A) lipid - manufactures proteins B) DNA - controls reaction rates C) carbohydrate - major source of energy D) protein - comprises majority of membrane structure E) RNA - determines our inherited characteristics