Cell EnergyPhotosynthesis

Cellular RespirationFermentation

How do cells obtain the energy required to function properly?

Cell Energy

Cells need energy to function

Organisms must obtain energy and process it into a form that their cells can use

Cell Energy

Plant cells use photosynthesis to obtain usable energy

Plant and animal cells use cellular respiration to obtain usable energy

Photosynthesis

How plant cells turn light energy into a usable energy

Chlorophyll is a green pigment, a group of molecules in the chloroplast of plant cells, that absorb the sun’s light energy

Plant cells use the captured light energy to change carbon dioxide and water into glucose, a simple sugar it uses as food

Plant cells use the energy stored in glucose

Cellular Respiration

How cells turn energy from glucose into a usable energy

Mitochondria change oxygen and glucose into carbon dioxide, water, and energy in the form of ATP

Cells use the energy stored in ATP

Cell Energy

Photosynthesis

Occurs in plant cells

Initial energy comes from the sun’s light energy

Occurs inside the chloroplast

Light Energy, Water & Carbon Dioxide are required

Glucose & Oxygen are produced

Cellular Respiration

Occurs in plant & animal cells

Initial energy comes from glucose

Occurs inside the mitochondria

Glucose & Oxygen are required

Carbon Dioxide, Water & ATP are produced

Fermentation

Method cells use to turn glucose into a usable stored energy when oxygen is not present

A small amount of ATP is produced from only partial breakdown of glucose