#(2)Part A
Increased thyroid hormone levels decrease cell metabolism. True or False?
True
False
False
# (3)Part A The development of secondary sexual characteristics is due to:
increased levels of estrogen or testosterone.
decreased levels of GnRH.
increased levels of progesterone.
decreased LH levels.
Choose the first option
#(5)Day 1 of the menstrual cycle is when ovulation occurs. True or False? True False
Choose false
Ovulation occurs on day 14, and marks the transition to the luteal phase.
#(17)Peptide hormones like insulin bind to receptors on the target cell's surface, triggering the production of second messengers. True or False?
True
False
True
#(20)Cells maintain a resting membrane potential, with a higher K+ concentration on the inside of the cell membrane. True or False?
True
False
True, the cell is more permeable to potassium
#(43) Chorionic gonadotropin is secreted by the endometrium when a woman becomes pregnant. True or False? True False
True... when a woman is pregnant, a hormone, hCG (human chorionic gonadotropin), is secreted.
#(45)Motor neurons: A) connect to the effector organs. B) carry impulses to the spinal cord. C) carry impulses to the brain. D) store memories. E) contract
Option A is correct.
# (53)What type of hormone mechanism is illustrated in the figure? A) direct hormonal stimulation of the nucleus a negative feedback loop B) reactions at the gap junction C) a second messenger system D) a positive feedback loop
Illustration is missing...
#(60) Steroid hormones use second messengers in communicating with their target cells. True or False? True False
False... they are permeable so no need for it
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