Which term refers to a contiguous genetic complex that is under coordinated control?
A) operon B) prototroph C) lysogen D) attenuation E) allosteric
A
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How many ATP and NADH molecules are produced from each molecule of glucose in the citric acid cycle only?
A. 4 ATP, 2 NADH B. 3 ATP, 4 NADH C. 2 ATP, 6 NADH D. 1 ATP, 2 NADH E. 0 ATP, 6 NADH
Which of the following does NOT give rise to
brain tumors?
a. neurons b. neuroglia c. epithelial cells in the meninges d. epithelial cells in the pituitary glands e. all of these can give rise to brain tumors
You are doing research on rodent populations in a cornfield at night and are hearing popping noises. Your research assistant is getting scared. Having taken biology, you can explain to your assistant that the popping sound is due to
A. the developing of the kernels of corn on the ears of the corn stalks. B. the growth of the intercalary meristems inside the corn stalk. C. the expansion of the lateral meristems increasing the girth of the corn stalk. D. the apical meristem cells in the corn stalks elongating. E. the development of the tassels on top of the corn stalk.
The cell walls of some ________ are composed of minerals such as calcium carbonate
A) archaea B) bacteria C) algae D) fungi E) bacteria and fungi