Over 90% of Staphylococcus aureus bacteria can withstand the effect of penicillin. Why?
A. They produce Beta-lactamase.
B. Cell division occurs in successively different planes, and the daughter cells remain attached to one another.
C. They produce coagulase.
D. They have loosely organized polysaccharide slime layers.
E. They produce staphylokinase, which dissolves fibrin threads in blood clots
Ans: A. They produce Beta-lactamase.
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Which blood type is the universal recipient?
a. A b. B+ c. AB+ d. AB e. O+
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a. substrate b. gene c. amino acid d. phosphate group