BI-1337
Effect of temperature and pH on enzymes
Biology · Secondary 4 · Medium · Effect of temperature and pH on enzymes
Tomato farmers spray a solution containing ethylene onto unripe tomatoes to speed up ripening. Ethylene increases the activity of the enzyme polygalacturonase, which breaks down pectin in the cell walls.
If the ethylene concentration is doubled, the rate of pectin breakdown by polygalacturonase also doubles (within the useful range). What happens to the time taken for the tomatoes to soften?
If the ethylene concentration is doubled, the rate of pectin breakdown by polygalacturonase also doubles (within the useful range). What happens to the time taken for the tomatoes to soften?
- It halves.
- It doubles.
- It stays the same.
- It becomes four times as long.
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