All but answer choice B has to do with voting
I believe the correct answers are: post-synaptic receptors
and shape of the neurotransmitter.
In the lock-and-key analogy for neurotransmitters, the lock
refers to the post-synaptic receptors, whereas the key refers to the shape of
the neurotransmitter.
Analogy of key-and-lock refers to the binding to occur
between post-synaptic receptors and the shape of neurotransmitters, in which the
neurotransmitter and the receptor site must have perfectly complementing
shapes, as does a key that fits a lock.
Answer:
B. To create a shorter route between the Atlantic and Pacific Oceans
Explanation:
This is because those who where shipping goods by sea from East to West had to go <em>ALL</em> the way around South America. Therefore, building the Panama Canal made it easier and took less time to ship goods across the sea.
Hope this helps!
