Which organ is very sensitive to the increases in blood nitrogen gas during deep water dives?
a. heart
b. brain
c. lungs
d. kidney
e. muscles
ANSWER: b
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Which of the following characteristics of the lactose operon is not true of the galactose operon?
A. Repressor binding prevents RNA polymerase from binding to the promoter. B. CRP activates expression when bound to cAMP. C. Expression is high when glucose levels are low and the activating metabolite is present. D. Expression is low when glucose levels are high.
Sperm are stored in the ____ after they are produced
a. epididymis b. seminiferous tubules c. penis d. prostate gland e. vas deferens
With respect to genetic traits, what is the opposite of recessive?
a. regressive b. progressive c. dominant d. subordinant e. hybrid
ADH is essential for ___ homeostasis
a. water volume b. salt balance c. glucose concentration d. temperature e. more than one of these types of