Redox reactions __________. ANSWER:
a. are characterized by the exchange of water molecules
b. are characterized by one substance's gaining an electron while another substance loses an electron
c. do not occur under physiological conditions
d. rarely involve enzymes
b. are characterized by one substance's gaining an electron while another substance loses an electron
Redox reactions involve the gain or loss of electrons.
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The relationship between global warming and greenhouse gases is ___
a. the more greenhouses gases, the less heat is trapped from earth's surface b. the two are unrelated c. the more methane, the less heat is trapped from Earth's surface d. the more oxygen, the less heat is trapped from Earth's surface e. the more greenhouse gases, the greater amount of heat trapped from Earth's surface
If more than one codon specifies the same amino acid, the code is said to be
A) complementary. B) inverse. C) redundant. D) ambiguous. E) degenerate.
Which of the following occurs in the cytosol of a eukaryotic cell?
A) glycolysis and fermentation B) fermentation and chemiosmosis C) oxidation of pyruvate to acetyl CoA D) citric acid cycle
A __________ is an organ that allows exchange of
nutrients between an embryo and its mother. Fill in the blank(s) with the appropriate word(s).