Answer: Thrombolytic enzyme that dissolves blood clots.
- A A lipase enzyme that breaks down dietary fats into fatty acids
- B Thrombolytic enzyme that dissolves blood clots
- C A protease enzyme commonly incorporated into laundry detergents
- D An amylase enzyme that hydrolyzes starch into simple sugars
Correct answer: B. Thrombolytic enzyme that dissolves blood clots
Explanation: Streptokinase is a thrombolytic (clot-busting) enzyme produced by Streptococcus that dissolves blood clots and is used to treat heart attacks and strokes.
Sewage passes through physical removal (primary), then aerobic biological treatment where microbes form flocs that consume organic matter (secondary); the settled activated sludge is then digested anaerobically to produce biogas - a deliberate switch from aerobic to anaerobic conditions between stages.
Concept context
Microorganisms in food, medicine, sewage treatment, biocontrol, and biofertilizers