Which statement best describes an electron transfer chain?
a. It generates energy from carbohydrates.
b. It is used by cells to dispose of excess electrons.
c. It utilizes ATP to synthesize nutrients.
d. It transfers energy, stepwise, from one compound to another.
e. It requires activation by oxygen.
ANSWER: d
You might also like to view...
The nucleotides within DNA are composed of a
A. phosphate group, ribose sugar, and nitrogenous base. B. sulfur group, ribose sugar, and nitrogenous base. C. phosphate group, deoxyribose sugar, and nitrogenous base. D. sulfur group, deoxyribose sugar, and nitrogenous base. E. phosphate group, hexose sugar, and nitrogenous base.
The refractory period of a neuronal plasma membrane is important because it ____
a. establishes the resting potential b. initiates an action potential c. ensures that the threshold potential will be reached d. ensures that an impulse will travel in a one-way direction e. resets the threshold potential
Two genes on each of four homologous chromosomes (HC) are described here, but only one of each
pair of sister chromatids is listed (HC1 and HC2). Capital and lower case indicate different alleles of the same gene. What four gametes will result from a single chiasma if the chromosomes have the following genes: HC1: Ab; HC2: aB?
a. Ab, AB, ab, aB b. Ab, Ab, aB, aB c. Aa, Bb, ab, Ab. d. Ab, Ab, AB, AB e. AB, AB, ab, ab
What are the base-pairing rules for DNA?
a. A-G, T-C c. A-U, C-G b. A-C, T-G d. A-T, G-C