If the diagram represents a human's ovarian cycle, what is causing progesterone to drop at the end of
the cycle? - progesterone negative feedback
The release of a hormone from a cell that then exerts an effect on that same cell is an example of
________________ effect: - autocrine
What hormone ...
If the diagram represents a human's ovarian cycle, what is causing progesterone to drop at the end of
the cycle? - progesterone negative feedback
The release of a hormone from a cell that then exerts an effect on that same cell is an example of
________________ effect: - autocrine
What hormone exerts negative feedback on the anterior pituitary hormone FSH, but not on LH? -
inhibin
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 vari Name a hormone involved in water regulation - ADH
ous 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 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.
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: - arachidonic acid
Diacyl glycerol (DAG) can turn on which enzyme? - protein kinase c
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