CELL STRUCTURES AND FUNCTION
BIO MOLECULES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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higher concentration
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higher temperature
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ideal pH
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Low temperature
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Detailed explanation-1: -The correct answer: The factor which does NOT affect enzyme activity is d. Free Energy.
Detailed explanation-2: -Temperature. At low temperatures, the number of successful collisions between the enzyme and substrate is reduced because their molecular movement decreases. The reaction is slow.
Detailed explanation-3: -Factors affecting enzyme activity Temperature: Raising temperature generally speeds up a reaction, and lowering temperature slows down a reaction. However, extreme high temperatures can cause an enzyme to lose its shape (denature) and stop working. pH: Each enzyme has an optimum pH range.
Detailed explanation-4: -This is because at low temperatures, the molecules have low kinetic energy. The low speeds of the molecules means that the rate of substrates colliding with the enzyme’s active sites is also quite low.