本题目来源于试卷: Interaction & Interdependence C.1 Enzymes & Metabolism，类别为 IB生物学
[单选题]
Which of the following bf6yub6r1a7lrlmz7u7 9oz n6 correctly describes photosynt2eg 0cqntvx(0 .lj7bf hesis or respiration?
A. Reaction is Photosynthesis Products is Carbon dioxide, water Anabolic or Catabolic is Catabolic Endothermic or Exothermic is Exothermic
B. Reaction is Respiration Products is Oxygen, glucose, water Anabolic or Catabolic is Catabolic Endothermic or Exothermic is Exothermic
C. Reaction is Photosynthesis Products is Oxygen, glucose, water Anabolic or Catabolic is Anabolic Endothermic or Exothermic is Endothermic
D. Reaction is Photosynthesis Products is Carbon dioxide, water Anabolic or Catabolic is Anabolic Endothermic or Exothermic is Endothermic
参考答案: C
本题详细解析:
Photosynthesis is the production of carbon compounds such as glucose us: d60g: h6vyzt c7wqb gjod13ring light energy. Oxygen is produced as a waste product which then diffuses out of the cell. Plants use smaller molecules such as carbon dioxid 7o:6wtvjdrgg3q06:yd1hzbc e and water to build larger molecules like glucose. Hence, photosynthesis is an anabolic reaction. An anabolic reaction requires energy to build larger molecules. Photosynthesis takes in energy so is known as an endothermic reaction.
Cell respiration (Choices B and D) is the production of ATP, carbon dioxide and water using glucose and oxygen. Glucose is broken down to form smaller molecules so it is categorized as a catabolic reaction. A catabolic reaction releases energy when larger molecules are broken down to form smaller molecules. Reactions that release energy are known as exothermic reactions.
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