MICRBIOL 415 Lecture Notes - Lecture 8: Cell Membrane, Protein Folding, Bacteriophage
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QUESTION 1: The rabies virus primarily affects the nervous system. The specificity that the rabies virus has for neuronal host cells is primarily dictated by __________________________.
A. the helical shape of its viral capsid |
B. the type of nucleic acid used for its viral genome (single-stranded, antisense RNA) |
C. the spikes that protrude from its viral envelope |
D. the segmented nature of its viral genome |
QUESTION 2: Which of the following genome types has been observed in viruses? To be marked correct, you'll need to select all true statements, as there may be more than one correct answer.
A. Single-stranded RNA |
B. Single-stranded DNA |
C. Double-stranded RNA |
D. Protein-based |
QUESTION 3: Choose the correct statement about viral evolution.
A. RNA and DNA viral genomes evolve at equal rates. | ||||||||||||
B. Cellular genomes mutate at a faster rate than viral genomes due to their large size and increased chance of replicative mistakes. | ||||||||||||
C. DNA viruses mutate faster than RNA viruses because thymine is more susceptible to mutation than uracil. | ||||||||||||
D. RNA viruses mutate faster than DNA viruses due to a lack of proofreading replicative enzymes. QUESTION 4: Your elderly patient is affected by shingles. After careful observation, you note that the virus responsible for the infection has an icosahedral capsid, is enveloped, and has double-stranded linear DNA as its genetic material. Based on this information, in which of the following viral families would you group this viral pathogen?
QUESTION 5: Which of the following is a key difference between lytic and lysogenic bacteriophage replication cycles?
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