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Streptokinase, used as a clot buster in myocardial infarction, is obtained from
A{'text': 'Streptomyces (bacterium)', 'label': 'A'}
B{'text': 'Aspergillus (fungus)', 'label': 'B'}
C{'text': 'Saccharomyces (yeast)', 'label': 'C'}
D{'text': 'Streptococcus (bacterium)', 'label': 'D'}
Answer & Solution
Correct answer: D. {'text': 'Streptococcus (bacterium)', 'label': 'D'}
1. Streptokinase is a bacterial enzyme with clot-dissolving activity.
2. NCERT states it is produced by the bacterium Streptococcus (modified by genetic engineering).
3. It is used to dissolve clots in blood vessels of heart attack patients.
4. Streptomyces is different (produces many antibiotics but not streptokinase).
_Source: NCERT Class 12 Biology, Ch 8 "Microbes in Human Welfare", §8.2.3_
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