PHOTOSYNTHESIS
*Nearly all living things obtain energy either directly or indirectly from sunlight
Photosynthesis – the process by which cells capture energy
Autotroph – an organism that makes its own food
Heterotroph – an organism that cannot make its own food
The TWO stages of photosynthesis :
· during photosynthesis, an organism uses energy from the Sun to convert CO2 and water into oxygen and sugars
1. THE LIGHT REACTIONS –
Chlorophyll - the pigment that absorbs sunlight to use for powering the second stage of photosynthesis
The pigment (colored chemical compounds that absorb light) acts like a solar cell
THE CALVIN CYCLE –
i. Then CO2 moves into the chloroplasts
ii. Sunlight breaks H2O into H’s and O’s
iii. The H’s combine with CO2 to create glucose (C6H12O6)
iv. O2 leaves through the stomata
The photosynthesis equation –
Photosynthesis – the process by which cells capture energy
Autotroph – an organism that makes its own food
Heterotroph – an organism that cannot make its own food
The TWO stages of photosynthesis :
· during photosynthesis, an organism uses energy from the Sun to convert CO2 and water into oxygen and sugars
1. THE LIGHT REACTIONS –
Chlorophyll - the pigment that absorbs sunlight to use for powering the second stage of photosynthesis
The pigment (colored chemical compounds that absorb light) acts like a solar cell
THE CALVIN CYCLE –
- Roots absorb water from the soil
- CO2 enters the plant through stomata – small openings on the undersides of leaves
i. Then CO2 moves into the chloroplasts
ii. Sunlight breaks H2O into H’s and O’s
iii. The H’s combine with CO2 to create glucose (C6H12O6)
iv. O2 leaves through the stomata
The photosynthesis equation –