Which of the following is true of radiometric dating?
A) A mineral that is 10,000 years old would best be dated with radioactive potassium.
B) A mineral that is 1 billion years old would best be dated with radioactive carbon.
C) Radioactive potassium-to-radon gas ratio can be used to date minerals.
D) One can infer the age of a fossil by radiometric dating of the minerals found near the fossil.
E) Carbon-14 decays with a half-life of 60,000 years.
D
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Which of the numbered respiratory complexes is not correctly paired with its name?
A) complex I: NADH dehydrogenase complex B) complex II: succinate-coenzyme Q oxidoreductase complex C) complex III: coenzyme Q-cytochrome c oxidoreductase complex D) complex IV: cytochrome c reductase complex E) none of the above
One adaptation to flight in birds is lighter bones, which lack
A. medullary cavities. B. collagen. C. the periosteum. D. bone marrow. E. calcium.
Cheese manufacturing involves enzymatic or microbial processing of the milk protein ________ to form a coagulated mixture called curd
A) chymosin B) rennin C) malt D) lactic acid E) casein
How does specialized transduction differ from regular lysogeny?
a. The resulting bacteriophage from specialized transduction cannot infect a new host cell. b. The resulting bacteriophage from specialized transduction does not contain any viral DNA. c. The prophage is not excised during specialized transduction. d. The prophage in specialized transduction carries with it pieces of the host chromosomal DNA.