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Photosynthesis and cellular respiration

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Photosynthesis and cellular respiration. Photosynthesis. “Photosynthesis not funny” It’s all in the chloroplast!. photosynthesis occurs in Chloroplasts in leaves of green plants. **The green pigment chlorophyll traps the sun’s energy - PowerPoint PPT Presentation

Text of Photosynthesis and cellular respiration

Cellular Respiration

Photosynthesis and cellular respirationPhotosynthesis

Photosynthesis not funny all in the chloroplast!

photosynthesis occurs in Chloroplasts in leaves of green plants

**The green pigment chlorophyll traps the suns energy**A series of reactions use this radiant energy and converts it to chemical energyChemical equation for Photosynthesis

Along with energy from the sun, six molecules of carbon dioxide react with six molecules of water to form 1 molecule of glucose and six molecules of oxygen.7Rates of Photosynthesis are Affected by:

Availability of Water (a Reactant)

Sunlight availability (Energy source); greater the amount of sunlight, the greater the rateto a point

Available Nutrients (Needed for proper growth and development)

Carbon Dioxide Gas Availability(A Reactant; great amount increases a point

pH of water and soil8Cellular Respiration

Two types of cellular respirationAerobic respiration and Anaerobic respiration. Both produce ATP. How much depends on oxygen levels!1.) Aerobic respiration occurs when oxygen is available and is more efficient than anaerobic. The process produces a great deal of ATP (about 36) which gives you energy!!

2.) Anaerobic respiration occurs when there is no available oxygen. It is less efficient than aerobic as only 2 ATP molecules are produced

What is atp???Stands for adenosine triphosphateBonds between phosphates of ATP have a great deal of stored energyWhen a bond breaks, by an enzyme (ATPase), energy is released and can be used in cell processesAfter the molecule loses its phosphate, another enzyme (ATP synthase) bonds another phosphate creating another ATP molecule!

Adenine MoleculeSugar molecule called Ribose3 PhosphatesAerobic respiration in the mitichondria

Aerobic RESPIRATION Occurs when cells need energyGlucose polymers (such as in your glycogen, or a plants starch) are broken down into smaller, glucose moleculesThe glucose molecules are then broken down in a series of more reactions that create energy in the form of ATPFor every glucose molecule, about 36 ATP are produced!


1 glucose molecule + 6 oxygen molecules yields 6 carbon dioxide molecules, 6 water molecules and ATPEnergy!!! (About 36 ATP)Rates of cellular respiration are Affected by:

pH depends on the environment the cell that is respiring is in!

Temperature; as it increases, the rate increasesto a point (too hot and enzymes denature!)

Available oxygen greater levels increase the process, but not too much!! 14anaerobic respiration2 Types; both occur in the cytosol of the cytoplasm 1.) Alcoholic Fermentation (from yeast and plants; top equation)2.) Lactic Acid Fermentation (in animals; bottom equation) makes your muscles sore during exercise***If you look at both reactions, there is no oxygen as reactant!!

Compare photosynthesis to cellular respirationPhotosynthesis and aerobic Cellular RespirationPhotosynthesis makes the food, and requires energy while cellular respiration breaks it down and gives off energy! (ATP)The equations are opposite!! But the sun is not needed for cellular respiration!

Sugar (Glucose)Sugar (Glucose)

*Cycle of the two processes