The development of secondary sexual characteristics is due to
A) decreased levels of GnRH.
B) increased levels of estrogen or testosterone.
C) increased levels of progesterone.
D) decreased levels of estrogen or testosterone.
E) decreased LH levels.
B
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The value for ? in root tissue was found to be -0.15 MPa. If you take the root tissue and place it in a 0.1 M solution of sucrose (? = -0.23 MPa), the net water flow would _____
A) be from the tissue into the sucrose solution B) be from the sucrose solution into the tissue C) be in both directions and the concentration of water would remain equal D) occur only as ATP was hydrolyzed in the tissue E) be impossible to determine from the values given here
Which of type of information is NOT communicated by proprioceptors?
A. muscle temperature B. limb movement C. muscle position D. muscle contraction E. muscle stretch
Which of the following is not true of measles?
A. It causes cell membranes to fuse to form syncytia. B. It is a single-stranded nonenveloped RNA virus. C. Its causative agent is a member of the Morbillivirus genus. D. It is transmitted by respiratory droplets. E. It is in the Paramyxovirus family.
The cone snail, which makes venom that has been used to develop drugs, is a type of
A. chiton. B. gastropod. C. bivalve. D. cephalopod. E. nudibranch.