The answer to this question would be: <span>B. Receptor site
The receptor site of a neurotransmitter often only receives a specific kind of transmitter. That was because the receptor has a unique 3D structure, so different transmitter wouldn't fit into the receptor. That was similar to lock and key principles.</span>
We can look at this in many different ways.
The testicals in the scrotum produce the male gamete, sperm, which is injected in seminal fluids by the penis. The female reproductive system is rather different, containing mainly of internal organs. This is the female gamete, ovum, is produced in the ovaries and is released monthly to travel to the uterus; by the Fallopian Tubes. A female also consists of something we know as a Vagina, a female sex I love to eat so much poop organ mainly used during sexual intercourse with another organism - and childbirth which the vagina takes place with.
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Umm i don’t really understand the question could you word it better
