During penetration of E. coli by a bacteriophage a. lysozyme is used to allow entry of the bacteriophage capsid and nucleic acid b. the tail acts as a hypodermic needle, injecting the bacteriophage DNA into the cell c. the tail fibers would bore a hole in the cell wall d. the virus would also bind to S. aureus e. E. coli would attempt to protect itself by synthesizing enzymes that degrade bacteriophage RNA 7. Penicillin-binding proteins a. can be bound by beta-lactam drugs in the cell b. alter the beta-lactam ring c. are involved in cell wall synthesis d. are synthesized by eukaryotic cells 8. Which of the following cells can help coordinate the limiting of a microbial infection? a. cosinophils b. bells c. T cells d. neutrophils 9. What part of the attached animal virus enters the host? a. the entire virus b. only the enzymes necessary for replication c. the nucleic acid d. the nucleic acid and capsid without the spikes c. the capsid only 10. All animal viruses must have the ability to 1. have their nucleic acid enter the host cell 2. kill the host cell 3. multiply in the absence of living bacteria 4. lyse the host cell 5. have their nucleic acid replicate in the host cell A. 1,2 B.2,3 C.3,4 D. 4,5 E. 1,5 11. Which of the following involves pseudopods? a. adherence of phagocytes to pathogens b. chemotaxis c. opsonization d. extracellular killing c. cxocytosis
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