BI-1351
Effect of temperature and pH on enzymes
Biology · Secondary 4 · Hard · Effect of temperature and pH on enzymes
A student places a strip of beetroot in distilled water at 5 °C and another identical strip in distilled water at 35 °C. After 20 minutes, the water at 35 °C is darker red than the water at 5 °C.
Which statement best explains this result in terms of enzyme activity?
Which statement best explains this result in terms of enzyme activity?
- Enzymes are denatured at 35 °C so more pigment can diffuse out.
- Enzymes work faster at 35 °C so more pigment is released in the same time.
- Enzymes only work at 5 °C so less pigment is released at 35 °C.
- Enzymes stop working below 35 °C so no pigment is released at 5 °C.
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