Metronidazole is most commonly recommended for treatment of infections caused by
A. tuberculosis
B. Gram Negative bacilli
C. Anaerobic organism
D. Gram positive cocci
Ans: C. Anaerobic organism
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Answer the following statements true (T) or false (F)
1. The exoenzyme that causes toxic shock syndrome is called erythrogenic toxin. 2. The neurotoxins produced by Clostridium botulinum and Clostridium tetani cause a spastic, rigid type of paralysis. 3. Although most people use the terms “infection” and “infectious disease” synonymously, microbiologists define infection as colonization by a pathogen. 4. Avirulent strains do not cause disease. 5. It is thought that the waxes in the cell walls of Mycobacterium tuberculosis protect this pathogen from digestion within phagocytes.
Habitat corridors have two roles: providing a unique habitat for some plant and animal species and providing a means of dispersal between larger patches of habitat
Indicate whether the statement is true or false
The fact that DNA is the molecule containing the genetic code for all life on Earth is a part of
A. evidence of artificial selection. B. biogeographical evidence. C. comparative embryological evidence. D. comparative anatomical evidence. E. biochemical evidence.
Body appendages as diverse as crab legs, beetle legs, sea star arms, butterfly wings, fish fins, and mouse feet start out as ____.
A. clusters of cells in the limb buds B. cerebral cells C. cardiac cells D. offshoots of the sperm cell E. offshoots of the egg