BI-1025
Aerobic respiration
Biology · Secondary 3 · Hard · Aerobic respiration
In a compost bin, aerobic bacteria break down dead leaves. This process releases energy as heat. Which statement best explains why the temperature in an aerobic compost bin rises quickly at first and then falls after some time?
- Aerobic respiration releases heat rapidly at first, but slows as enzymes are affected by high temperature.
- Aerobic respiration only releases heat when the compost is cold, then stops completely.
- Anaerobic respiration replaces aerobic respiration after a few days, so no more heat is released.
- Heat is absorbed by bacteria during respiration, so the compost cools down over time.
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