FAD is derived from vitamin ________.
A. B-2, riboflavin
B. B-6
C. B-3, niacin
D. B-12
Answer: A
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The least developed of the papilla types are the ________ papillae, which house only a few taste buds during infancy and early childhood.
A. vallate B. foliate C. fungiform D. filiform E. papiform
Match the cell membrane structure to its description: Desmosomes.
A)Adjacent cells held together by connexon proteins that form cylinders allowing ion flow between the cells' cytoplasm B)Adjacent cells joined by a line of membrane proteins that form an impermeable junction C)Buttonlike junctions that use linker proteins to hold adjacent cells together. D)Mechanical couplings scattered like rivets along the sides of adjacent cells to prevent their separation
Neostigmine, used to treat myasthenia gravis, blocks the enzyme that degrades ________. This helps treat the disease because ________.
A. nicotine; it destroys the antibodies that block nicotinic ACh receptors on the motor end plate B. acetylcholine; it destroys the antibodies that block nicotinic ACh receptors on the motor end plate C. acetylcholine; it increases the amount of acetylcholine available to bind to receptors on the motor end plate D. norepinephrine; it increases the amount of acetylcholine available to bind to receptors on the motor end plate