The yield of ATP in aerobic respiration is usually lower than the theoretical 36 molecules due to all of the following, except
A. cost to shuttle NADH into the mitochondrion.
B. different yields per NADH molecule.
C. getting ATP out of the mitochondrion.
D. production of lactate.
Answer: D
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Another name for pain receptors is
A. mechanoreceptors. B. tactile corpuscles. C. lamellated corpuscles. D. nociceptors.
The primary pigments contained in the epidermis are
A) carotene, hemoglobin, and xanthophyll. B) carotene, eumelanin, and pheomelanin. C) melanin, chromatin, and chlorophyll. D) xanthophyll, hemoglobin, and melanin. E) melanin, carotene, and chromatin.
Externally the posterior and inferior portions of the left ventricle form the
A) sternocostal surface. B) right border. C) left border. D) superior border. E) diaphragmatic surface.
How does the hormone aldosterone influence potassium levels?
A. It increases potassium reabsorption by the kidneys and decreases potassium blood concentration. B. It increases potassium secretion by the kidneys and decreases potassium blood concentration. C. It increases potassium secretion by the kidneys and increases potassium blood concentration. D. It increases potassium reabsorption by the kidneys and increases potassium blood concentration.