Question 7(Multiple Choice Worth 2 points) (03.05 MC)
When an action potential reaches a neuromuscular junction, which of the following will happen first?
Acetylcholine binds to acetylcholinesterase and depolarizes the cell.
Sodium ion gates and potassium ion gates open at the same time.
Acetylcholine enters into the synapse to bond with receptor proteins.
Vesicles containing acetylcholine fuse with the presynaptic membrane.

what following? you said which of the following. but there is no be more specific.

answer: decrease

a limiting factor is the one which decrease the abundance, distribution and causes extinction of the population of species in a ecosystem. here, predators including hawks, owls and snakes are the limiting factor for the population of mexican free tailed bat.   although bats are nocturnal animals as they forge for food at night these predators also may remain active during night which can decrease the population of the mexican free-tailed bats. also, these bats eat only one type of insects that are moths. the food can also be a limiting factor as all 400 members are dependent upon same type of food needs that are moths. the decrease in the moth population can cause decrease in population size of the mexican free-tailed bats.

therefore, the scenarios will most likely to decrease the population size of the mexican free-tailed bats.  

sex cells are usually half's then they find another half and make a fertilize egg

well, i believe that the answer is 2. : 3