What part of the sarcolemma contains acetylcholine receptors?
A) motor end plate
B) end of the muscle fiber
C) part adjacent to another muscle cell
D) any part of the sarcolemma
A) motor end plate
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Ribosomes that are attached to the RER are called "free ribosomes."
Answer the following statement true (T) or false (F)
Let's imagine a new form of birth control for males has been developed. This drug works by inhibiting capacitation of the sperm after ejaculation has occurred. Determine why capacitation is a critical step through which sperm must pass for fertilization
to be successful and why this drug may work. What will be an ideal response?
In adipose tissue, lipoprotein lipase:
a. Forms triacylglycerol from circulating free fatty acids and glycerol b. Is activated in response to norepinephrine released from synapses upon fat cells c. Is synthesized by fat cells and delivered to capillary endothelial cells d. Signals fat cells to form endocytic vesicles for the ingestion of fat e. Travels from fat depots to the hypothalamus and functions as a signal of adiposity
What type of cellular transport involves the cytosolic protein clathrin?
A. Secondary active transport B. Receptor-mediated endocytosis C. Primary active transport D. Pinocytosis E. Exocytosis