Mechanism of Hormone Action Lec I

Question 1

For amino acid based hormones:

Answer 1

all non polar (lipid based) since all cell plasma membranes are phospholipid bilayers integrated w/ cholesterol molecules

Question 2

Amino acid based hormones are defined as

Answer 2

polar molecules with positively and negatively charged ends

Question 3

amino acid hormones must deliver their message from _____________

Answer 3

the outside by binding to receptors on the target cell surface

Question 4

The first messengers for amino acid hormones are:

Answer 4

attaching to the receptors on target cell plasma membrane which acts as the 1st messengers, relays the original message from the endocrine gland to target cell surface

Question 5

The second messenger for amino acid hormones are:

Answer 5

intracellular cyclic AMP which indirectly activates other enzymes in target cell; leads to functional changes in target cell activity

Question 6

In steroid homones (cholesterol/lipid)