Coenzymes such as NAD+ and NADP+
a. are tightly bound to enzymes.
b. are associated with metal ions.
c. diffuse freely through the cytoplasm.
d. are not modified in reactions.
e. all of these.
Answer: c
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Each DNA strand has a backbone that consists of
alternating a. covalent and ionic bonds. b. nitrogen-containing bases. c. hydrogen bonds. d. sugar and phosphate molecules. e. covalent and hydrogen bonds.
Which is found in slime molds but not in fungi?
A. nonmotile spores B. flagellated cells C. zygote formation D. photosynthesis E. chitin in cell walls
Which of the following is not true of glutaraldehyde?
A. It is classified as a carcinogen. B. It inactivates endospores in 3 hours. C. It inactivates viruses. D. It does not damage plastics. E. It cross-links proteins on cell surfaces.
George is experiencing problems with damaged cartilage in his knee and is eating cartilage from the bones of his steak so that his knee will more readily heal. Explain why he is not necessarily going to succeed in speeding up the repair of his knee
What will be an ideal response?