The sub-atomic particle with a positive charge is ________.
A. a proton
B. a neutron
C. an ion
D. an isotope
E. an electron
Answer: A
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Where do the molecules used as the inputs of the Calvin cycles (ATP and NADPH) come from?
A. They come from previous Calvin cycles. B. They come from the air. C. They come from the light reactions. D. They come from the sun.
The phenomenon of chance events causing the allele frequencies in a population to change unpredictably is known as
____.
a. genetic drift b. gene flow c. deleterious mutations d. nonrandom mating e. natural selection
In eukaryotic cells, DNA is divided into long segments called ________.
Fill in the blank(s) with the appropriate word(s).
Many vitamins are important ________ of enzymes
A) protein cofactors B) coenzymes C) allosteric inhibitors D) competitive inhibitors E) activators