Answer:
Sorry, i can't help.
Explanation:
I can't write your essay for you, that would be plain wrong and morally unacceptable.
Two roles that are expected in teens , is to make sure they learn in school and hopefully learn to become respectable adults. Parents on the other hand should always make sure children are safe by providing a home , food, and clothing. There job is to make sure children are learning so they can become productive citizens.
I would say the hypothalamus. But if your talking about alertness that would be the recticular formation. Its a bunch of nerves in the brain connecting the spinal cord cerebrum and cerebellum and it's what keeps us conscious and alert.
Cell division
protein synthesis
growth and metabolism
Amino acids help form proteins, enzymes, and neurotransmitters if that helps.. (d isn’t a complete response so I’m not sure)