Photosynthesis Exam Questions

Question 1

Describe how light energy absorbed by chlorophyll molecules is used to synthesis atp

Answer 1

Excitation of chlorophyll molecules
Electrons emitted to the electron transport chain
Loss of energy by electrons along electron transport chain
Energy lost by electrons is used to synthesis atp from adp and pi

Question 2

Crops absorb and use light energy for the production of photosynthetic products , describe how light energy is used by crop plants during the light dependent reaction

Answer 2

Light energy excites electrons
The electrons move along electron carriers
The energy is used to join adp and pi to form atp
Photolysis of water produces protons, electrons and oxygen
NAD is reduced by electrons

Question 3

Describe the mechanism of the Calvin cycle to continue the synthesis of 6- carbon sugars

Answer 3

5 carbon molecule binds with co2
To from glycerate 3- phosphate 
Using ATP and reduced NADP 
2 of the 3 carbon GP form a 6C compound
All RuBP is regenerated