BI-1414
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 37 °C, starch is completely digested in 4 minutes. At 60 °C, no starch is digested.
Which statement explains the result at 60 °C?
Which statement explains the result at 60 °C?
- The enzyme is denatured so the substrate no longer fits the active site.
- The enzyme molecules have no kinetic energy at this temperature.
- The substrate is denatured but the enzyme remains unchanged.
- The enzyme concentration becomes zero at this temperature.
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