Ch 7 quiz questions
The pituitary hormone that triggers the release of thyroid hormone from the thyroid gland is
TSH
The link between a first messenger and a second messenger in a cell that responds to peptide hormones is usually
a G protein
steroid hormones
bind to receptors in the nucleus of their target cells
Which of the following substances activates protein kinases and thus acts as a second messenger?
cyclic AMP
The primary function o ADH is to
decrease the amount of water lost at the kidneys
The primary function of ADH is to
decrease the amount of water lost at the kidneys
Hormones known as "catecholamines" are
derivatives of the amino acid tyrosine
After a steroid hormone binds to its receptor to form an active complex,
gene transcription is initiated
after a steroid hormone bind to it receptor to form an active complex
gene transcription is initiated
All target cells
have hormone receptors
The pituitary hormone that controls the release of glucocorticoids from the suprarenal cortex is
ACTH
When adenyl cyclase is activated,
ATP is consumed and cAMP is formed
An activated G protein can trigger
All of the answers are correct (the activation of adenyl Cyclase, the opening of calcium ion channels in the membrane, the release of calcium ions from intercellular stores, a fall in cAMP levels)
A kinase is an enzyme that performs
phosphorylation
The pituitary hormone that stimulates milk production by the mammary glands is
prolactin
The hormone oxytocin
promotes uterine contractions is responsible for mil expression from the mammary glands triggers prostate gland contraction is produced in the hypothalamus
When a catecholamine or peptide hormone binds to receptors on the surface of a cell, the
second messenger appears in the cytoplasm
the hypothalamus controls secretion in the adenohypophysis by
secretin releasing and inhibiting factors into a tiny portal system