At which human developmental stage does sexual maturation occur?
a. embryo
b. fetus
c. newborn
d. pubescent
e. adult
d
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Which of the following describes a prion?
a. enveloped viral particle with double-stranded DNA enclosed by a capsid b. infectious RNA particle c. infectious proteinaceous particle with no associated nucleic acids d. a simple prokaryote with only a membrane and a nucleoid region
Which of the following is a function of stems?
a. sexually reproduce b. absorb nutrient minerals c. produce new tissues d. transport dissolved gases e. anchor plants
The rain shadow associated with mountains
A. is on the downwind side and has a wetter climate than the upwind side of the mountain. B. is on the upwind side and has a drier climate than the downwind side of the mountain. C. is on the downwind side and has a drier climate than the upwind side of the mountain. D. is on the upwind side and has a wetter climate than the downwind side of the mountain.
Why has the attention been focused on melanocortin-releasing neurons in the arcuate nucleus rather than the neuropeptide Y releasing neurons?
What will be an ideal response?