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ATP Energy storing molecule Can be used for quick energy by the cell

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Presentation on theme: "ATP Energy storing molecule Can be used for quick energy by the cell"— Presentation transcript:

1 ATP Energy storing molecule Can be used for quick energy by the cell
Energy is stored in the phosphate bonds.

2 PHOTOSYNTHESIS the process that uses sunlight to synthesize foods from carbon dioxide and water. H2O and CO2 are used to produce Glucose and O2. 6H2O+6CO2C6H12O6+6O2 Occurs in some bacteria and in the chloroplasts of green plants green algae. Occurs in two parts.

3 PHOTOSYNTHESIS SUN Two reactions make up photosynthesis:
1. Light Dependent Reaction - Light energy is converted to chemical energy which is temporarily stored in the form of ATP and NADPH (chemical energy). 2. Light Independent Reaction (The Calvin Cycle) CO2 is used to make glucose molecules. The chemical energy stored in ATP and NADPH powers to formation of glucose. Also called Carbon Fixation or C3 Fixation

4 PHOTOSYNTHESIS Photosynthesis Animation

5 AEROBIC RESPIRATION Process used to release energy (ATP) for cellular use. C6H12O6+6O26H2O+6CO2 Occurs in the mitochondria of all eukaryotes

6 GLYCOLYSIS STEP ONE Means “splitting glucose”.
Glucose is broken down into 2 pyruvate molecules. Occurs in the cytoplasm (cytosol) just outside of mitochondria. It is anaerobic which means it does NOT require oxygen. YEILDS: 2 ATP, 2 NADPH, 2 pyruvate

7 KREBS CYCLE (CITRIC ACID CYCLE)
STEP TWO Aerobic which means it requires O2. Each Acetyl-CoA enters the Krebs Cycle resulting in two complete cycles to get yield. Location: mitochondrial matrix. Acetyl CoA (2C) bonds to Oxalacetic acid (4C - OAA) to make Citrate (6C). It takes 2 turns of the Krebs cycle to oxidize 1 glucose molecule. Mitochondrial Matrix

8 Electron Transport Chain (ETC) and Oxidative Phosphorylation (Chemiosmosis)
Inner Mitochondrial Membrane STEP THREE Aerobic Location: inner mitochondrial membrane (cristae) Electron acceptors in the chain accept NADH/FADH2 electrons. As electrons pass down a series of molecules to O2 – the O2 combines with H atoms to form H2O and ATP.

9 MAX ATP YIELD FOR CELLULAR RESPIRATION (EUKARYOTES)
Glucose Glycolysis 2ATP ATP 6ATP 18ATP ATP ATP 2 ATP (substrate-level phosphorylation) 2NADH 6NADH Krebs Cycle 2FADH2 2 Pyruvate 2 Acetyl CoA ETC and Oxidative Phosphorylation Cytosol Mitochondria 36 ATP (maximum per glucose)

10 ANAEROBIC RESPIRATION aka Fermentation
Does not require Oxygen also used to release energy, but not as efficient as aerobic respiration (less ATP) Products include CO2 and lactic acid or alcohol Two Types: Alcoholic Fermentation and Lactic Acid Fermentation Occurs in cytoplasm when cells are deprived of oxygen. Lactic acid forms during increased muscle activity. Cramps result from increased acidity level. Alcohol fermentation occurs in fungi such as yeast and some bacteria produce ethanol and CO2.

11 TO DO Complete page two for Monday. You got the sheet Wednesday.


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