A group of prokaryotes that often live in extreme environments are:
a. archaeabacteria
b. protists
c. eubacteria
d. fungi
Ans: a. archaeabacteria
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Why is glycolysis described as having an investment phase and a payoff phase?
A) It both splits molecules and assembles molecules. B) It attaches and detaches phosphate groups. C) It uses glucose and generates pyruvate. D) It shifts molecules from cytosol to mitochondrion. E) It uses stored ATP and then forms a net increase in ATP.
A breeder of cattle has a herd of white cows and a roan bull. Hair color in this breed is controlled by an
incompletely dominant gene. The two homozygous forms are either red or white, and the heterozygous is roan. (a) What colors of calves are expected and in what proportions? (b) Outline a procedure to develop an all-red herd. What will be an ideal response?
Which of the following are late successional species?
A) trees B) grass C) weeds D) forbs
Facultative anaerobes usually possess
A. catalase only. B. superoxide dismutase only. C. both catalase and superoxide dismutase. D. neither catalase or superoxide dismutase. E. alternative