Section 2 Cells and Energy Chapter 1 Section 2 Cells and Energy

Sources of Energy - Photosynthesis Nearly all living things obtain energy either directly or indirectly from the energy of sunlight captured during photosynthesis.

The Two Stages of Photosynthesis During photosynthesis, plants and some other organisms use energy from the sun to convert carbon dioxide and water into oxygen and sugars.

The Two Stages of Photosynthesis

Photosynthesis and Respiration Sunlight Carbon Dioxide Water Sugar Oxygen

Photosynthesis and Respiration Plants produce oxygen Photosynthesis Plants use carbon dioxide Animals use oxygen Respiration Animals produce carbon dioxide

Photosynthesis and Respiration Plants produce oxygen Photosynthesis Plants use carbon dioxide Animals use oxygen Respiration Animals produce carbon dioxide

Photosynthesis and Respiration Plants produce oxygen Photosynthesis Plants use carbon dioxide Animals use oxygen Respiration Animals produce carbon dioxide

Photosynthesis and Respiration Plants produce oxygen Photosynthesis Plants use carbon dioxide Animals use oxygen Respiration Animals produce carbon dioxide

Inside the Chloroplast Photosynthesis Inside the Chloroplast

Photosynthesis

Respiration

Glucose Is the Hub of Energy Processing in Cells

Two Stages of Respiration During respiration, cells break down simple food molecules such as sugar and release the energy they contain.

Photosynthesis and Respiration You can think of photosynthesis and respiration as opposite processes.

Cellular Respiration

Respiration Glucose Energy Water Cytoplasm Smaller Molecules Oxygen Carbon Dioxide Cytoplasm Mitochondrion Smaller Molecules

Cellular Respiration

Fermentation