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Frage 27

How does raising the temperature affect the rate of photosynthesis in a plant?

  1. The rate rises the whole time, so the hotter the plant the better
  2. The rate rises until an optimum is reached and then fallsRichtige Antwort
  3. The rate is unaffected, because temperature only affects respiration
  4. The rate falls steadily, because warmth drives the water out

Erklärung

Warmth gives the reacting particles more energy and speeds the reaction up, but only as far as a best temperature, beyond which the rate drops away again. The belief that hotter is always faster is the common error, because past that point the reaction is harmed rather than helped, and warmth clearly does matter to a process that speeds up with it.

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Frage 27: How does raising the temperature affect the rate of… · Plants and Photosynthesis · Questena