Photosynthesis

How Energy is Obtained By Living Things. All Energy comes from the sun. The process by which a cell captures energy in sunlight and uses it to make food is called photosynthesis. Nearly all living things obtain energy either directly or indirectly from the energy of sunlight captured from photosynthesis.

Energy from the Sun Autotrophs: Organisms that manufacture their own food by Photosynthesis. (plants) Organisms that cannot make its own food, animals are called a heterotrophs. Heterotrophs obtain food by eating other organisms.

How Photosynthesis Works Photosynthesis is a complex process. Plants use the energy of the sun to convert carbon dioxide (CO2) and water (H2O) into oxygen (O2) and sugar (C6H12O6) Photosynthesis is a two stage process Like baking a cake: Stage 1: Combine the ingredients to make the batter Stage 2: Bake the Batter

#1

Chloroplast from the plant cells capture energy from sunlight.

Chloroplast from the plant cells capture energy from sunlight. #2

Captured light energy is used to produce sugars and oxygen from water and carbon dioxide

#3 Chloroplast from the plant cells capture energy from sunlight. Captured light energy is used to produce sugars and oxygen from water and carbon dioxide #3

Carbon dioxide enters the leaf through openings called stomata

#4 Chloroplast from the plant cells capture energy from sunlight. Captured light energy is used to produce sugars and oxygen from water and carbon dioxide Carbon dioxide enters the leaf through openings called stomata #4

Water enters the plant through roots and moves upward to the leaf

#5 Chloroplast from the plant cells capture energy from sunlight. Captured light energy is used to produce sugars and oxygen from water and carbon dioxide #5 Carbon dioxide enters the leaf through openings called stomata Water enters the plant through roots and moves upward to the leaf

Sugars produced are used by the plant cells for energy

#6 Chloroplast from the plant cells capture energy from sunlight. Captured light energy is used to produce sugars and oxygen from water and carbon dioxide Sugars produced are used by the plant cells for energy Carbon dioxide enters the leaf through openings called stomata Water enters the plant through roots and moves upward to the leaf #6

Oxygen exits through stomatoa on the underside of the leaf

#7 Chloroplast from the plant cells capture energy from sunlight. Captured light energy is used to produce sugars and oxygen from water and carbon dioxide Sugars produced are used by the plant cells for energy Carbon dioxide enters the leaf through openings called stomata Water enters the plant through roots and moves upward to the leaf Oxygen exits through stomatoa on the underside of the leaf #7

C6H12O6 + 6O2 6CO2 + 6H2O The Photosynthesis Chemical Equation Light Energy 6CO2 + 6H2O

C6H12O6 + 6O2 6CO2 + 6H2O Carbon Dioxide

C6H12O6 + 6O2 6CO2 + 6H2O Water

C6H12O6 + 6O2 6CO2 + 6H2O Sugar (glucose)

C6H12O6 + 6O2 6CO2 + 6H2O Oxygen

Chloroplast from the plant cells capture energy from sunlight. Captured light energy is used to produce sugars and oxygen from water and carbon dioxide Sugars produced are used by the plant cells for energy Carbon dioxide enters the leaf through openings called stomata Water enters the plant through roots and moves upward to the leaf Oxygen exits through stomatoa on the underside of the leaf Light energy 6CO2 + 6H2O C6H12O6 + 6O2