Farnesyl pyrophosphate and geranyl pyrophosphate are related to which of the following?
A) alkaloids
B) alkanes
C) isoprenes
D) none of these
C
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Cold diuresis occurs when:
A) the initial peripheral vasoconstriction response in hypothermia is interpreted by the volume receptors as an increase in volume, causing the kidneys to produce more urine. B) the sympathetic nervous system response in hypothermia increases blood flow to the kidneys, resulting in decreased sodium reabsorption and subsequent water excretion. C) massive systemic vasoconstriction shunts cold body water to the renal system, where it is excreted from the body in an attempt to increase the core body temperature. D) warmed IV fluids administered during severe hypothermia decrease the viscosity of the blood, resulting in an acute increase in output from the kidneys.
Nitrous oxide enters the atmosphere through the burning of fossil fuels and
A. rice paddies. B. use of fertilizers. C. wetlands. D. cattle.
What was Niels Bohr's explanation for the observation of atomic spectra?
A. Electrons could only move in discrete energy steps within an atom. B. Only certain photons with the correct energy could excite the quanta in the nucleus. C. Nucleons could be excited by different electron energies. D. Any photon could excite an electron. E. Electrons could not move in an atom.
Consider the following processes: respiration, combustion, polymerization, nitrification, industrial fixation, and photosynthesis. How many of these result in the release of oxygen into the atmosphere?
A) all B) 4 C) 2 D) 1 E) none