Please choose the answers that correctly describe the virulence factors of Staphylococcus aureus.
> Coagulase enzyme causes blood plasma to clot.
> Staphylokinase enzyme destroys red blood cells.
> Penicillinase enzyme allows S. aureus to grow in the presence of penicillin.
> Hyaluronidase enzyme promotes invasion of host tissues.
> Lipase enzyme causes a fever in the host.
>Coagulase enzyme causes blood plasma to clot.
>Penicillinase enzyme allows S. aureus to grow in the presence of penicillin.
>Hyaluronidase enzyme promotes invasion of host tiss
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Bactericidal tests should be performed:
a. for severe and life-threatening infections. b. for every clinically significant organism isolated from a clinical specimen. c. for evaluation of antimicrobial agents usually considered bacteriostatic. d. for bacteria isolated from wounds, wheth-er or not they are clinically significant.
Recombination frequency for two genes is a function of the ____
a. distance between the two genes on a single chromosome b. overall size of the chromosome on which the genes are located c. distance between the two chromosomes on which the two genes are located d. relative sizes of the two chromosomes on which the two genes are located e. sex of the parent that supplies each gene
Each of the following is an example of facilitated diffusion except
A) glucose transport by GLUT1. B) chloride-bicarbonate exchange. C) aquaporin transport. D) ion channel transport. E) oxygen transport.
The continued geographic isolation of Kaibab squirrels from Abert squirrels has allowed the animals to evolve into
two distinct subspecies. This is an example of: a. hybridization. b. allopolyploidy. c. adaptive radiation. d. allopatric speciation. e. sympatric speciation.