Cell Energy Photosynthesis Cellular Respiration Fermentation 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