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

Identify the inorganic source for each element, distinguish water photolysis from carbon-dioxide 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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