Energy Flow Photosynthesis Cellular Respiration Focus Question Where

Energy Flow- Photosynthesis & Cellular Respiration Focus Question: • Where do plants and animals get their energy from?

Energy Flow • Radiant energy is energy that comes from the Sun • Light energy is seen by humans; it’s absorbed by plants in the chlorophyll and converted into chemical energy during photosynthesis. 0. 023% absorbed by plants

Energy Flow • Chemical energy is the energy stored in the bonds of compounds and molecules. 0. 023% absorbed by plants

Producers and Consumers • Producers (green plants) create glucose or chemical energy from light energy. They do not need to consume other organisms to get energy. • Consumers are organisms which need to eat (consume) other organisms to get their energy. They cannot perform photosynthesis.

Photosynthesis • Producers perform photosynthesis to create high-energy sugars (glucose), which the plant then uses or stores.

Photosynthesis • Write the word equation for photosynthesis. carbon dioxide + water sunlight chlorophyll glucose + oxygen • Write the chemical equation for photosynthesis. CO 2 + H 2 O sunlight chlorophyll C 6 H 12 O 6 + O 2

Try This • Try holding your breath for as long as you can. • Why do you feel you need to breathe after a while?

Cellular Respiration • Cellular respiration occurs in the cells of producers and consumers, releasing energy stored in glucose. • By breaking the bonds in glucose, the chemical energy that was stored in them is released, making it available to be used.

Cellular Respiration • Write the word equation for cellular respiration. glucose + oxygen carbon dioxide + water + ENERGY • Write the chemical equation for cellular respiration. C 6 H 12 O 6 + O 2 CO 2 + H 2 O + ENERGY

The Reactions How are the processes related?

How are they related?

Complementary Processes • Cellular respiration and photosynthesis are complementary processes because the products of one reaction are the reactants of the other reaction. • ie. CO 2 and H 2 O are produced in cellular respiration and needed for photosynthesis to occur.