Streptokinase is an enzyme produced by streptococcal bacteria. This enzyme can lyse clots. Streptokinase is harvested from culture media and filter sterilized

This purified enzyme is injected into heart attack patients to dissolve clots that may be present in coronary arteries.
Why does this injection not harm the patient?
A. The enzyme is highly specific.
B. The enzyme will digest all proteins in the
blood.
C. The enzyme may damage the collagen in
the wall of the capillaries.
D. The enzyme causes the patient to run a
fever.
E. The enzyme is denatured at body
temperature.


Answer Key: A

Biology & Microbiology

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