When substrate-level phosphorylation occurs, it means that
A. ATP is converted into ADP plus a phosphate group.
B. ADP is converted into ATP by the addition of a phosphate group.
C. NADH is converted into NAD+ plus a proton.
D. NAD+ is converted into NADH.
Answer: B
You might also like to view...
For mechanisms of sex determination, which of the following is incorrectly paired?
A. X-Y, cow B. X-O, grasshopper C. ZZ-ZW, bluebird D. 1n-2n, pea plant E. high temperature-low temperature, alligator
Hfr cells are cells that can integrate the F factor and some genes into the bacterial chromosome. Hfr
cells can do this through:
a. mitosis. b. meiosis. c. prophase. d. crossing over. e. transduction.
Why would bacteria evolve so that the presence of tryptophan inhibits its own production?
A. High levels of tryptophan causes cells to become unresponsive to external stimuli, so its production must be regulated. B. Producing high levels of tryptophan inhibits the production of other amino acids, so inhibiting its production allows all amino acids to be synthesized at equal concentrations. C. Producing the enzymes that synthesize tryptophan is metabolically expensive, so it is wasteful to make them when tryptophan levels are high and its synthesis is not necessary. D. High levels of tryptophan inhibit cellular respiration and the synthesis of ATP, so its production must be regulated. E. All of the answers are correct.
For which species concept is anatomical features the primary criterion for determining species identities?
1. biological 2. ecological 3. morphological 4. phylogenetic a. 2 only b. 4 only c. 1 only d. 1 and 2 e. 3 only