Glycolysis yields a net energy profit of ____ ATP molecules per molecule of glucose
a. no
b. one
c. two
d. four
e. six
c
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The equation CaSiO3 + CO2 CaCO3 + SiO2 takes into account which of the following processes associated with the long-term carbon cycle?
A. volcanism B. chemical weathering C. subduction D. plate tectonics E. bacteria-based oxidation
As recently as the 1980s, the medical establishment believed ulcers to be caused by stress and an increase in gastric acidity. How has the current understanding of ulcer development changed patient treatment?
A. There is no treatment for ulcers, then or now. B. Antibiotics are now used to treat ulcers. C. Different foods are now suggested for patients having ulcers. D. Doctors now give their patients sedatives to calm patients with ulcers.
After 30 cycles of PCR cloning of a segment
of DNA, how many copies of that segment will there be?
a. 1000 b. 10,000 c. 100,000 d. 1,000,000 e. 1,000,000,000
The observation of a range of phenotypes in a genetic trait is ____
a. pleiotropy b. genomic imprinting c. codominance d. penetrance e. continuous variation