Gregory is undergoing pubertal changes. He has started using addictive drugs and has started taking an increasing number of risks.
Which of the following neurotransmitters is most likely responsible for these developments?

a) histamine
b) serotonin
c) dopamine
d) glycine

ANSWER: DOPAMINE

EXPLANATION:

DOPAMINE works jointly as a hormone and neurotransmitter in the body. Dopamine’s role or effects in the body system ranges from high libido, anxiety, difficulty sleeping, increased energy, improved focus and learning ability etc.

However, Dopamine also makes us feel satisfied after food consumption, ensue happiness after stimulating drugs use (such as amphetamines).

It's also responsible for making high risk decisions which generates high risk activities (such as jumping out of a moving train).

Thus, Gregory have been using dopamine triggering addictive drugs, presumably with tradename of Intropin, Dopastat, or Revimine.

nothing

hope this !

d - failures.

the only attempted british colony in north america before 1600 was roanoke, virginia, which was a total failure. england claimed several areas, including newfoundland, but made no sustainable attempts to colonize them before 1600.