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Edexcel A-Level Biology A2 5.1 Overall Reaction of Photosynthesis Questions

Name the inorganic source for each element, distinguish photolysis from carbon reduction and connect water shortage to ATP, reduced NADP and sugar production.

Syllabus
First assessment 2019
Course
Biology YBI11
Level
A2

Exam points

  • Identify carbon dioxide and water as the elemental sources in simple sugars.
  • Distinguish oxygen release by photolysis from carbon-dioxide reduction in the cycle.
  • Explain how limited water reduces photolysis, ATP, reduced NADP and carbon fixation.

Edexcel A-Level Biology A2 5.1 Overall Reaction of Photosynthesis Questions question 1

[Maximum number: 2]

The light-independent reactions of photosynthesis use the products of the light-dependent reactions to produce simple sugars.

Simple sugars have the formula CnH2nOn\mathrm{C}_{n} \mathrm{H}_{2 n} \mathrm{O}_{n}. Name the inorganic molecule that provides each element in a simple sugar. (2)

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