Which system functions to maintain blood volume and composition?
a. endocrine
b. circulatory
c. respiratory
d. lymphatic
e. urinary
ANSWER: e
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Which of the following is not generally true about fatty acids produced by microorganisms?
A. Gram-positive bacteria often make cyclopropane fatty acids. B. Fatty acids are monocarboxylic acids. C. Fatty acids have long alkyl chains. D. All of the choices are correct.
Gated ion channels include each of the following except
A) voltage-gated channels. B) ligand-gated channels. C) mechanosensitive channels. D) patch clamp-gated channels. E) All of the above are types of gated channels.
Incompatibility in the Rh blood system can result in hemolytic disease of the newborn. Which combination poses the greatest risk?
a. Rh positive mother, Rh negative fetus b. Rh positive father, Rh negative fetus c. Rh negative mother, Rh positive fetus d. Rh negative mother, Rh negative fetus e. Rh positive mother, Rh negative father
Which of the following males in a given population would be considered the most fit in an evolutionary sense?
A) one that produced 100 offspring, of which 10 survived but 9 did not reproduce B) one that produced two offspring, both of which survived and produced offspring of their own C) one that produced 1,000 offspring, of which 100 survived but 99 did not reproduce D) one that produced 1,000 offspring, all of which died before reaching reproductive age