Photosynthesis & Cellular Respiration http://mrescience.com/i mages/life/chap1_2/ph otosyn.swf://
Photosynthesis Photosynthesis is a chemical reaction. Plants use light to make their own food.
Where does photosynthesis occur? Photosynthesis occurs in the leaves of a plant.
Photosynthesis takes place in the cell part known as the CHLOROPLAST
What is needed for photosynthesis to occur? Light is needed for photosynthesis to occur. The plant s chloroplasts use the light to make a sugar called glucose.
Why do plants need glucose? Glucose is the food for the plant. It gives the plant energy to grow.
Plants make enough glucose to be used during the night and on cloudy days when they don t get sunlight. The extra glucose is stored in the plant s leaves and other parts as starch.
What happens during photosynthesis?
Six molecules of carbon dioxide react with six molecules of water to form 1 molecule of glucose and six molecules of oxygen.
Photosynthesis is a chemical reaction. Chemical reactions can be shown in the form of a chemical equation.
EQUATION FOR PHOTOSYNTHESIS WATER OXYGEN 6CO 2 + 6H 2 O + ENERGY C 6 H 12 O 6 + 6O 2 CARBON DIOXIDE GLUCOSE
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, carbon dioxide and water.
The green pigment chlorophyll, 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 food chain.
What is Cellular Respiration?
What is Cellular Respiration? The chemical breakdown of glucose molecules to release stored chemical energy.
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 C 6 H 12 O 6 + 6O 2 CARBON DIOXIDE 6CO 2 + + WATER + 6H 2 O + USABLE ENERGY ATP
Photosynthesis & Cellular Respiration
Photosynthesis and Respiration are opposite equations. Light + CO 2 + H 2 O C 6 H 12 O 6 + O 2 C 6 H 12 O 6 + O 2 ATP + CO 2 + H 2 O
Photosynthesis Turns Light energy into Chemical energy Respiration Chemical Turns energy into usable energy
ENERGY PROCESSES ENERGY SOURCE PHOTOSYNTHESIS CELLULAR RESPIRATION FERMENTATION LIGHT GLUCOSE GLUCOSE CELL PART CHLOROPLAST MITOCHONDRIA CYTOPLASM REACTANTS PRODUCTS WATER, CARBON DIOXIDE GLUCOSE, OXYGEN GLUCOSE, OXYGEN WATER, CARBON DIOXIDE, ATP GLUCOSE LACTIC ACID, ALCOHOL, CARBON DIOXIDE, ENERGY
How do cells produce energy without oxygen?
Anaerobic Respiration Yeast Some Bacteria 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) Yeast Produce the wastes Carbon dioxide and Alcohol And the useful product ATP ( energy) Some Bacteria
FERMENTATION
Overview of photosynthesis and SUN 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