What is a tastant?
A. A substance dissolved in saliva that causes taste cells to depolarize.
B. A supporting cell in the olfactory epithelium that connects the sensations of taste and olfaction.
C. A cell found within a taste bud that depolarizes when stimulated.
D. A structure found within the inner ear that translates vibration into sound.
Answer: A
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Select the correct statement about oxygen transport in blood
A) During conditions of acidosis, hemoglobin is able to carry oxygen more efficiently. B) Increased BPG levels in the red blood cells enhance oxygen-carrying capacity. C) A 50% oxygen saturation level of blood returning to the lungs might indicate an activity level higher than normal. D) During normal activity, a molecule of hemoglobin returning to the lungs carries one molecule of O2.
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