Suppose a new protein modification that is essential for proper ribosomal function has been discovered. When the protein is dissolved in water, it remains curled up. However, in the presence of an abundance of glucose, the protein molecule unfolds and attaches to lipid molecules, such as those that comprise the membrane of the cell. Which of the following conditions would MOST likely activate the protein? A.
gestational diabetes

B.
a high-fat meal

C.
sickle cell anemia

D.
a high-sugar meal

Choose the incorrect statement (a) the motor end plate membrane is only capable of generating graded potentials, but it is contiguous with the skeletal muscle sarcolemma, which can generate action potentials. (b) propagation of an action potential through the t-tubules into the sarcoplasmic reticulum triggers the release of ca++ into the cytoplasm of a skeletal muscle fiber. (c) the generation of suprathreshold endplate potentials in multiple muscle fibers could be due to the increased frequency of action potential generation at the axon hillock of a single motor neuron. (d) a greater amount of ach would be found in the presynaptic vesicles of a motor unit that fired several action potentials after exposure to botulinum toxin, than in a motor unit that fired several action potentials after exposure to the venom of the krait snake (which contains α-bungarotoxin).