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Question 50

Which word equation lists the substances used and made in aerobic respiration in a plant?

  1. carbon dioxide + water → glucose + oxygen
  2. glucose + carbon dioxide → oxygen + water
  3. glucose + oxygen → carbon dioxide + waterCorrect answer
  4. glucose + water → carbon dioxide + oxygen

Explanation

Respiration breaks sugar down using the gas the plant takes in, and it leaves behind the gas that living things breathe out together with water; energy is released as this happens, but energy is not a substance and so has no place among the names. Turning the arrow round instead describes the reaction that builds the sugar rather than the one that breaks it down.

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Question 50: Which word equation lists the substances used and made in… · Plants and Photosynthesis · Questena