What occurs during viral uncoating?
a. The capsid breaks apart, releasing the viral genome.
b. The nucleic acid breaks apart, allowing for translation.
c. The viral envelope is released.
d. The viral proteins are synthesized.
Ans: a. The capsid breaks apart, releasing the viral genome.
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A. may be susceptible to different antibiotics. B. reproduce asexually. C. may be the result of random mutations. D. can participate in conjugation and transformation. E. all of these are correct.
Why is there an upper limit to the surface area-to-volume ratio in a cell?
a. The volume of the cell maximizes the use of phospholipids. b. The surface area must be sufficient to provide adequate nutrient and waste exchange to sustain the chemical activities of the cell. c. The cells require a balance between endocytosis of precursor molecules to transporters in the membrane. d. The size of a cell is limited by the number of mitochondria. e. The organelles in cells require communication with the extracellular environment to support internal functions.
Glycogen can be used as an energy source in the body; what is glycogen made of?
a. lipids b. amino acids c. glucose d. nucleic acids
Which of the following is not one of the starting materials of the citric acid?
a. FAD b. NAD+ c. acetyl CoA d. ATP e. H2O