DNA is made up of a linear array of ____________________. Fill in the blank(s) with the appropriate word(s)
ANS: nucleotides
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Which of the following is true of an endergonic reaction?
a. Endergonic reactions release energy. b. Endergonic reactions require an energy input. c. Endergonic and exergonic reactions are the same. d. Endergonic reactions happen before exergonic reactions can begin.
The spectrophotometer in this exercise measures ________
a. color and intensity. b. neither color nor intensity. c. color only. d. intensity only.
Fire in the taiga
A) damages trees, resulting in excessively slow recovery due to low temperatures. B) alters nutrient cycling, making nutrients unavailable for trees. C) occurs often, resulting in decreased competition of vegetation adapted to repeated burning. D) results in systems dominated by grassland species.
In oxidative phosphorylation, ATP production is coupled to the events in the electron-transport chain. What is accomplished in the final electron-transfer event in the electron-transport chain?
(a) OH– is oxidized to O2 (b) pyruvate is oxidized to CO2 (c) O2 is reduced to H2O (d) NAD+ is reduced to NADH