PHOTOSYNTHESIS
THE CALVIN CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The enzymes have completed all the reactions so stop
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The enzymes have been denatured or destroyed
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Nothing-the rate continues to increase all the time
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Detailed explanation-1: -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.
Detailed explanation-2: -As with many chemical reactions, the rate of an enzyme-catalysed reaction increases as the temperature increases. However, at high temperatures the rate decreases again because the enzyme becomes denatured and can no longer function.
Detailed explanation-3: -Denaturation of enzymes causes bonds to be broken, structure to be disrupted and it stops functioning. This happens to enzymes when they are exposed to extreme, unsuitable conditions, for instance, high temperatures or extreme pH levels.
Detailed explanation-4: -Enzyme denaturation occurs when an enzyme loses its native conformation, or three-dimensional structure, rendering it unable to bind to substrate and catalyze product formation. The two main causes for enzyme denaturation are deviations from optimal temperature and pH.