How does the Calvin Cycle work?

To answer this question, I would definitely use a diagram so that they can clearly see that this is a cycle and it will probably then use the diagram to explain each step. The Photosynthesis equation CO2 + Water + light = Glucose + O2The Calvin Cycle, or the light independent reaction (which means it can happen when it is light or when it is dark) is linked to the light dependent reaction. This is where is gets the first molecule of CO2.This CO2 molecule combines with a 5 carbon sugar called ribulose bisphosphate (can be simplified to RuBP). This makes a 6 carbon sugar and is catalysed by an enzyme called ribulose bisphosphate carboxylase (simplifies to Rubisco).This 6 carbon sugar breaks down into two 3 carbon sugars called glycerate-3-phosphate (GP). As the cycle continues, ATP and NADPH are reduced (loose electrons) in order to convert the 2 GP molecules into 2 molecules of triose phosphate (TP).After this, some of the TP molecules leave the cycle and become glucose (bear in mind the photosynthesis equation at this point) and the other molecules remain to regenerate RuBP and the cycle continues.

Answered by Elva K. Biology tutor

4187 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

What is the shape of a DNA molecule


What happens to DNA during mitosis?


Why do insulin levels rise in the body following a meal, and what effects does the insulin have?


Putting bee honey on a cut kills bacteria. Honey contains a high concentration of sugar. Use your knowledge of water potential to suggest how putting honey on a cut kills bacteria. (AQA BIOL1)


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo
Cookie Preferences