Reactants capable of interacting to form products in a chemical reaction must first overcome a thermodynamic barrier known as the reaction's _____
A) entropy
B) activation energy
C) endothermic level
D) equilibrium point
E) free-energy content
Answer: B
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A high-energy electron from NADH entering the electron transport chain would travel among components of the chain in what sequence?
A. complex I, coenzyme Q, complex III, cytochrome C, complex IV, oxygen B. complex I, coenzyme Q, complex III, cytochrome C, ATP synthase, oxygen C. complex II, cytochrome C, complex IV, cytochrome C, oxygen D. complex II, coenzyme Q, complex IV, cytochrome C, ATP synthase, oxygen E. complex I, coenzyme Q, complex II, cytochrome C, complex III, coenzyme Q, complex IV, cytochrome C, oxygen
The efficient phagocytosis of protein-coated pathogens is called:
A. optimization. B. opsonization. C. inflammation. D. complementation.
Thinking critically, one flaw with the Olestra experiment is that ________
a. people were offered bags containing different quantities of chips and intake was not measured b. experimental subjects were discouraged from moving about during the experiment c. 89 people who ate Olestra chips got stomach cramps but the researchers did not conclude that Olestra causes cramps d. people were all offered bags containing the same amount of chips but intake was not measured
All of the following are reabsorbed by the nephron EXCEPT
A. Na+ and Cl- ions. B. H+ ions. C. amino acids. D. glucose. E. vitamins. F. water.