BI-1292
Effect of temperature and pH on enzymes
Biology · Secondary 4 · Medium · Effect of temperature and pH on enzymes
A scientist measures the rate of an enzyme-controlled reaction at different pH values. At pH 7, the rate is highest. What happens to the enzyme when the pH is changed far away from pH 7?
- The active site changes shape so the substrate no longer fits properly.
- The enzyme permanently gains more active sites and the rate keeps increasing.
- The enzyme’s substrate is broken down into amino acids and stops working.
- The enzyme becomes a carbohydrate and cannot bind to any substrate.
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