BIOLOGY
ENZYMES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The reaction speeds up
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The reaction slows down
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The enzyme dies
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The enzyme has to change back its shape to work
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Detailed explanation-1: -If the shape changes, the enzyme can no longer work. Enzyme shape can be affected by changes in temperature or pH. Enzymes are called catalysts because they make the chemical reactions occur faster.
Detailed explanation-2: -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. Changing the pH outside of this range will slow enzyme activity.
Detailed explanation-3: -Enzymes (and other catalysts) act by reducing the activation energy, thereby increasing the rate of reaction.
Detailed explanation-4: -Enzymes work best under certain conditions, and enzyme activity will slow down if conditions are not ideal. For example, your normal body temperature is 98.6°F (37°C), but if you have a fever and your temperature is above 104°F (40°C), some enzymes in your body can stop working, and you could get sick.