During the transmission of signals across a neuromuscular junction, which of the following happens first? A. Acetylcholine binds to a receptor protein on the motor endplate.
B. The sodium and potassium ion gates on the motor end plates open.
C. Synaptic vesicles release acetylcholine molecules.
D. Synaptic vesicles move toward the axon terminals.

Astudent wants to test the hypothesis that fertilizer improves the growth rate of grass seeds. to test this hypothesis, the student put the same amount of grass seed in 3 containers with the same type of soil. the student measured the growth at the end of the week. all plants received equal amounts of water and sunlight. if you were asked to graph this data, what would you place on the x-axis? a. fertilizer b. water c. plant growth d. week one