The world today derives the majority of its energy from which of the following sources?
A) wind and solar power
B) coal and oil
C) hydropower and nuclear power
D) hydropower
E) nuclear power
Ans: B) coal and oil
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A key regulator of both glycolysis and gluconeogenesis is
A) hexokinase. B) glyceraldehyde-3-phosphate. C) alanine. D) coenzyme (CoA). E) fructose-2, 6-biophosphate.
Plants having the ability to take up organic nitrogen are most likely in which of the following
environments?
a. arctic tundra d. grassland b. salt marsh e. temperate forest c. tropical forest
The magnitude of an action potential ____ as it is propagated down an excitable membrane. This is
due to the ____.
a. increases; all-or-nothing principle b. remains constant; all-or-nothing principle c. increases; threshold principle d. remains constant; threshold principle e. increases; refractory principle
Which would have the highest concentration of C—H bonds?
A) Saturated fat B) Unsaturated fat C) Trans fat D) Cholesterol