Which of the following best describes the bacterial cell wall?

A) Protects the cell from osmotic lysis
B) Contributes to pathogenicity
C) Site of action of several antibiotics
D) All of the above


Ans: D) All of the above

Biology & Microbiology

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If goats are crossed with sheep, embryos will form but cease development and spontaneously abort. This is an example of

A. a prezygotic mechanism. B. hybrid inviability. C. hybrid sterility. D. hybrid breakdown. E. spermatic behavior.

Biology & Microbiology

Urinalysis can be used to identify all of the following

EXCEPT a. a metabolic problem. b. a bacterial infection. c. kidney disease. d. diabetes insipidus. e. cardiac damage.

Biology & Microbiology

The drug used against intestinal anaerobic bacteria, that can also alter normal flora causing antibiotic-associated colitis is

A. bacitracin. B. chloramphenicol. C. clindamycin. D. ciprofloxacin. E. gentamicin.

Biology & Microbiology

The complement components react ______.

A. in a cascade B. in parallel C. differently at different temperatures D. simultaneously

Biology & Microbiology