and Answers
Name a hormone involved in water regulation
✓ ~~~ADH
The ability of the lizard, Anolis carolinensis, to change color from green to brown is
due to the hormone...
✓ ~~~MSH
Suckling would stimulate the release of...
✓ ~~~prolactin
Name a hypothalamic hormone involved in reproduction
✓ ~~~GnRH
What causes smooth muscle contractions in the uterus and mammary gland?
✓ ~~~oxytocin
What enzyme converts ATP into cAMP?
✓ ~~~adenylate cyclase
The various components involved in the PKc signaling system (receptor, g-proteins,
unique lipids, etc) are maintained in close proximity to each other because they all
reside in membrane components called:
, ✓ ~~~lipid rafts
The signal recognition particle binds to a receptor located on the...
✓ ~~~endoplasmic reticulum
What stimulates the production of testosterone in male and progesterone in the
female?
✓ ~~~LH
What hormone exerts negative feedback on the anterior pituitary hormone FSH, but
not on LH?
✓ ~~~inhibin
What assay is used for measuring the amount of hormone in a blood sample that
utilizes radioactively labeled hormone which competes with a non-labeled hormone
for a restricted number of antibodies to the hormone?
✓ ~~~radioimmunoassay (RIA)
What metal is absolutely required for a steroid receptor to function?
✓ ~~~Zinc
When estradiol is not present, its receptor is blocked from interacting with the DNA
by...
✓ ~~~HSP90
When estradiol is present, where does its receptor interact with DNA?
, ✓ ~~~HRE
Diabetes insipidus results due to a lack of...
✓ ~~~ADH
The protein precursor for thyroid hormone is...
✓ ~~~thyroglobulin
The half life of prolactin is 20 mins. If 200 ug of prolactin is injected into a rabbit, how
much remains in the rabbit one hour later?
✓ ~~~25 ug. After 20 mins it's 100, 40 mins it's 50, and 20 minutes it's 25.
The release of a hormone from a cell that then exerts an effect on that same cell is
an example of ________________ effect:
✓ ~~~autocrine
A _________________ must be modified in some way, removal of exons or
glycoslyation, in order to be converted into an active hormone.
✓ ~~~prohormone
What interacts with the regulatory subunit of the protein kinase a tetramer, causing
the the tetramer to separate into individual subunits, permitting the kinase to be
active?
✓ ~~~cAMP
Prostaglandins and prostacyclins are made from this precursor: