LABORATORY REVIEW
CELL RESPIRATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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both would increase
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both would decrease
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Photosynthesis would increase but Cell Respiration would decrease
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Photosynthesis would decrease but Cell Respiration would remain the same.
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Detailed explanation-1: -Low temperatures decrease cellular respiration in living tissues. As the temperature rises, the kinetic energy required to engage in chemical reactions like cellular respiration goes down. Therefore, warmer temperatures typically result in more cellular respiration.
Detailed explanation-2: -The cellular respiration in plants decreases with a decrease in temperature until the point-when a further decrease in temperature will lead to the freezing of the tissues and plants. The rate of reaction is directly proportional to the change in temperature.
Detailed explanation-3: -At low temperatures, the rate of photosynthesis is limited by the number of collisions between enzymes and substrate. As temperature increases the number of collisions increases, therefore the rate of photosynthesis increases.
Detailed explanation-4: -Temperature has an impact on the rate of photosynthesis. The rate of photosynthesis increases as the temperature rises. During photosynthesis, a temperature of more than 40 °C slows down the process.
Detailed explanation-5: -Although the light dependent reactions of photosynthesis are not affected by changes in temperature, the light independent reactions of photosynthesis are dependent on temperature. They are reactions catalysed by enzymes. As the enzymes approach their optimum temperatures the overall rate increases.