They are both highly selective,most of the time what binds to them. Think of it as a lock and key, if the key fits the lock and it turns then it does what it needs.
Answer:
it depends on if it is the last thing you think about .you essentially go into a sort of dazed dream like state like if your favorite movie was harry potter and that was essentially what you dream about then that will be what you talk about.
Explanation:
The answer is D
Hope this helps
