45.1 chemical classes of hormones

Question 1

3 groups

Answer 1

1- polypeptides (proteins and peptides)
2- amines
3- steroids

Question 2

insulin

Answer 2

polypeptide (water soluble)

• 2 polypeptide chains
• made from cleavage of a longer protein chain

Question 3

epinephrine

Answer 3

amine hormone (water soluble) 
-synthesized from a single amino acid = tyrosine and tryptophan

Question 4

thyroxine

Answer 4

amine hormone (lipid soluble) 
-synthesized from a single amino acid = tyrosine and tryptophan

Question 5

cortisol

Answer 5

steroid hormone (lipid soluble) 
-can cross cell membrane

Question 6

lipid vs water soluble affect

Answer 6

correlates with location of receptors in target cells