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Photosynthesis &

http://mrescience.com/i mages/life/chap1_2/Ph otosyn.swf:// Photosynthesis Photosynthesis is a .  use to make their own food. Where does photosynthesis occur? • Photosynthesis occurs in the of a . Photosynthesis takes place in the part known as the What is needed for photosynthesis to occur? • Light is needed for photosynthesis to occur. • The plant’s use the light to make a called . Why do plants need glucose?

• Glucose is the food for the plant. It gives the plant to grow. • Plants make enough glucose to be used during the and on cloudy days when they don’t get .

• The extra glucose is stored in the plant’s leaves and other parts as . What happens during photosynthesis? Six molecules of dioxide react with six molecules of to form 1 molecule of glucose and six molecules of . Photosynthesis is a chemical reaction.

Chemical reactions can be shown in the form of a chemical equation. EQUATION FOR PHOTOSYNTHESIS

WATER OXYGEN 6CO + ENERGY C H O + 6O 2 6H2O + 6 12 6 2 CARBON GLUCOSE DIOXIDE Name the process performed by the elodea plant..

Identify the gas being produced by the elodea plant.______

Predict what would happen to the amount of gas produced if the light was moved further AWAY from the plant.

Explain your prediction. Describe Photosynthesis Photosynthesis • Changes light to food. • Glucose is sugar. • Plants need light, and water. • The , which is in the chloroplasts captures light energy. • The light provides energy needed to change molecules of carbon dioxide & water into the sugar glucose. Why is this important to us? How does photosynthesis help us?

• During the process of photosynthesis, oxygen is produced. The oxygen released is necessary for all living things. Why is this important to us?

• We cannot make our own food • Glucose= energy, we must get our food from plants. • Plants are the first step in the . What is Cellular Respiration? What is Cellular Respiration? The chemical breakdown of glucose molecules to release stored . Takes place in the mitochondria of all living things. AEROBIC RESPIRATION

• Release of energy from glucose using oxygen. • Takes place in the mitochondria. What is the chemical equation for cellular respiration? EQUATION FOR RESPIRATION

GLUCOSE + OXYGEN CARBON + WATER + USABLE DIOXIDE ENERGY

C6H12O6 + 6O2 6CO2 + 6H2O + ATP Photosynthesis & Cellular Respiration Photosynthesis and Respiration are opposite equations.

Light + CO2 + H2O C6H12O6 + O2   ATP + CO2 + C6H12O6 + O2 H2O Photosynthesis • Turns ______Light energy into ______Chemical energy Respiration • Turns ______Chemical energy into usable______energy ENERGY PROCESSES

PHOTOSYNTHESIS CELLULAR RESPIRATION ENERGY LIGHT GLUCOSE GLUCOSE SOURCE CELL PART CHLOROPLAST MITOCHONDRIA CYTOPLASM REACTANTS WATER, GLUCOSE, GLUCOSE CARBON OXYGEN DIOXIDE PRODUCTS GLUCOSE, WATER, , OXYGEN CARBON ALCOHOL, DIOXIDE, CARBON ATP DIOXIDE, ENERGY How do cells produce energy without oxygen?

Some Yeast Tired muscle cells

Releases energy without the use of oxygen

Anaerobic Respiration

• Tired muscle cells •Produce lactic acid •Which cause muscle cramps Anaerobic Respiration (Fermentation)

Produce the wastes Carbon dioxide and Alcohol Yeast Some Bacteria And the useful product ATP ( energy) FERMENTATION Overview of photosynthesis and respiration

RADIANT ENERGY

PHOTOSYNTHESIS RESPIRATION CELL ACTIVITIES

GLUCOSE ATP(ENERGY) Learn more about photosynthesis at: http://www.ftexploring.com/me/photosyn1.html Read how photosynthesis & respiration are related: http://www.usoe.k12.ut.us/curr/science/scib er00/8th/energy/sciber/photosyn.htm