Answer: Lipase.
- A Streptokinase
- B Pectinase
- C Lipase
- D Amylase
Correct answer: C. Lipase
Explanation: Lipases produced by microorganisms are incorporated into detergents to break down fat and oil stains from fabrics.
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