BI-1330
Effect of temperature and pH on enzymes
Biology · Secondary 4 · Hard · Effect of temperature and pH on enzymes
A student investigates the effect of temperature on an enzyme that breaks down starch. At 30 °C the reaction finishes in 4 minutes. At 50 °C the reaction does not occur.
Which statement explains this result?
Which statement explains this result?
- The enzyme is denatured at 50 °C so the substrate no longer fits the active site
- The enzyme is frozen at 50 °C so molecules stop moving
- The substrate is denatured at 50 °C but the enzyme is unchanged
- The enzyme works faster at 50 °C so the reaction cannot be seen
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