photosynthesis

The Light Dependent Reactions

• Chlorophyll absorbs light energy from the sun
• Electrons leave chlorophyll and move down the electron transport chain
• The Chemical Energy is stored in ATP and NADPH
• Oxygen is released at the end of this

Chloroplasts

• This is where Photosythesis1 takes place
• Each contains neat stacks called grana (consists of thylakoid membranes.)
• The space outside is the stroma

First two steps

• Photons strike a molecule of chlorophyll
• Enzymes in the Thylakoid membrane Split apart water
• Plants already starting to get energy

Step 3 and 4

• Electrons are carried by a series of electron transport chains
• Electrons need more energy, so the chlorophyll absorbs light.
• The process is almost over now

Step 5 and 6

• Enzymes in the thylakoid membrane transfer the new energized to the NADP, Molecule needed to make glocuse in the Calvin Cycle
• Then a chemiosmotic gradient is created
• The hydrogen ions flow back through the thylakoid membrane

Photosynthesis II

• Takes place in to Stroma surrounderings
• This reaction is called light-Independent reaction
• This when NADPH and ATP are use to make glucose

Step 1 to CC

• Carbon dioxide combines with a simple, five-carbon compound called RUBP
• This reaction occurs with the help of enzymes name Rubisco and produces a molecule know as 3PG
• The Rubisco is the producer and the 3PG is the product

Step 2 of CC

• Molecule of 3PG gain energy from ATP and NADPH
• Then rearrange them self to make G3P
• One G3P goes to glucose and the others go to stage 3 of Calvin Cycle

Stage 3 of CC

• The remaining G3P molecules uses energy from ATP to form RUBP
• Then the cycle repeats

Benefits of Photosythesis

• The plants release oxygen for animals and humans
• Also the animals that eat the plant get a lot of energy from the plants energy