Most antimicrobial drugs are derived from which two bacterial and which two fungal genera?

> Bacillus
> Streptomyces
> Penicillium
> Cephalosporium
> Clostridium
> Saccharomyces


> Bacillus
> Streptomyces
> Penicillium
> Cephalosporium

Biology & Microbiology

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a. a dorsal, hollow nerve cord. b. gill slits. c. a brain. d. a tail extending beyond the anus. e. more than one of these.

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Describe the pathogenesis of HIV to explain how the number of CD4 lymphocytes decline in an ongoing HIV infection

What will be an ideal response?

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Rickettsias and chlamydias are classified as

A) Gram-positive bacteria. B) extracellular parasites. C) obligate intracellular parasites. D) hyperthermophiles.

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Blood for transfusion is frequently tested for HIV by using the

A. complement fixation test. B. agglutination test. C. ELISA method. D. Ouchterlony test.

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