The Calvin-Benson cycle is a cyclical pathway of reactions that use ____
a. carbon to produce sugar
b. sugar to produce energy
c. sugar to produce starch
d. starch to produce energy
e. oxygen to produce carbon dioxide
ANSWER: a
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Virulent bacteria are always damaging to plants and thus have no beneficial uses
A. true B. false
Courts allow patenting complementary DNA (cDNA) because
A) its exact sequence is not in the genome of an organism. B) it cannot be synthesized in a laboratory. C) it is present only in adult humans. D) it represents only the introns of a gene.
The growth rate of plant cells and the efficiency of their physiological processes are highest when the cells are at minimum turgor
Indicate whether the statement is true or false
The residence time is equal to the pool size divided by the flux between pools. The pool size of atmospheric carbon (carbon dioxide, methane, etc) is ~750 Pg, and the movement of carbon into the atmosphere from burning fossil fuels is around 7.5 Pg/year. How long does carbon from burning fossil fuels remain in the atmosphere on average?
A) 7.5 years B) 10 years C) 100 years D) 750 years E) There's not enough information to answer