Semen does not contain
a) prostate fluid
b) urine
c) fructose
d) prostaglandins
e) both b and d are correct
Answer: b) urine
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A single protein strand folded into a stable,
functional domain represents a. primary structure. b. secondary structure. c. tertiary structure. d. quaternary structure. e. most macromolecules.
The primitive earth's atmosphere did NOT contain
a. water vapor. b. free nitrogen. c. free hydrogen. d. free oxygen. e. inert gases.
If a pedigree of several generations shows only females affected by a particular trait, what can be ruled
out? A. Autosomal recessive inheritance D. X-linked recessive inheritance B. X-linked dominant inheritance E. None of these can be ruled out C. Y-linked inheritance
How does ATP provide energy to a cell?
A) It loses a phosphate group, releasing energy in the process. B) It releases electrons, which are a source of energy. C) It releases protons, which are used in the mitochondrion to create energy. D) It shuttles electrons across the mitochondrial membrane to create potential energy.