Photosynthesis and Respiration

Light dependent reaction

Chlorophyll absorbs light energy, which excites electrons

Electron move along electron transport chain releasing energy

Energy used to join ADP and Pi to form ATP

Photolysis of water produce produces protons, electrons and oxygen

NADP reduced by electrons

Light independent reaction

Carbon dioxide combines with RuBP

To produce two molecule of GP

Reduce to TP, using NADPH and energy from ATP

TP converted to other organic substances in Calvin cycle

Glycolysis in cytoplasm

Glucose phosphorylated to Glucose phosphate and ADP, using ATP

Use ATP to another ATP to form 2x Triose phosphate

Triose phosphate is oxidised, forming 2x pyruvate, 2x NADH and 4x ATP

Link reaction in mitochondria, matrix

Pyruvate is decarboxylated to form carbon dioxide

Pyruvate is oxidised to form acetate and NAD is reduced to form NADH

Acetate is combine with coenzyme A to form Acetyl CoA

Krebs Cycle in mitochondria, matrix

Acetyl CoA combines with 4C to form 6C

Coenzyme A goes back to link reaction

Decarboxylation and dehydrogenation occurs, produces CO2, FADH2, ATP and NADH

6C converted back to 4C

Oxidative phosphorylation

Protons and electrons released from oxidising NADPH and FADH2

Electrons pass through electron transport chain, releasing energy.

Provide energy to take H+ into space between membranes

H+ pass back into matrix down the electrochemical gradient through ATP synthase, drives synthesis of ATP from ADP and Pi

Electron, H+ and oxygen combines to form water

Oxygen is the final electron acceptor

Photoionisation

Chlorophyll molecule absorb energy from photons of light, excites 2 electron, causing the, to be released from chlorophyll