Which kind of chemical reaction involves the attachment or removal of a phosphate group?
A. oxidation-reduction
B. acid phosphorylation
C. phosphorylation
D. hydrolysis
C. phosphorylation
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Where does photosynthesis take place in cyanobacteria?
a. plasma membrane b. Golgi bodies c. cytosol d. mitochondria e. chloroplasts
Which of the following prevent uncontrolled cell division?
a. Proto-oncogenes b. Tumor suppressor genes c. Gene mutations d. Negative regulators
A reason given by scientists as to why viruses are not considered living organisms is that
A. viruses can be frozen and still survive. B. viruses do not reproduce on their own. C. viruses are all smaller than the smallest known cells. D. viruses do not contain a nucleus. E. viruses do not contain genetic information.
DNA replication occurs
a. between the gap phases of interphase. b. immediately after cytoplasmic division. c. during prophase of mitosis. d. between mitosis and G1. e. after the S phase of interphase