Presentation on theme: "Cellular Respiration Do animals breath?"— Presentation transcript:
1 Cellular Respiration Do animals breath? How do animals get their energy?
2 Cellular Respiration Equation C6H12O6 + 6O2 6CO2 + 6H2O + cell energy (ATP)In words…..Glucose + oxygen carbon dioxide + water + energy
3 2. All Cells perform cellular respiration to get energy/ATP Cells and Energy – Cellular RespirationThe process called cellular respiration releases the energy in carbohydrates in two steps.GlycolysisKrebs Cycle2. All Cells perform cellular respiration to get energy/ATP
4 Step 1: Glycolysis glyco – sugar lysis – to break down Glycolysis occurs in the cell’s cytoplasm.One glucose molecule breaks into 2 smaller molecules called pyruvate and also makes 2 ATP molecules
5 Step 2a: Krebs Cycle (Oxidative Respiration) **Only if Oxygen is presentoccurs in the mitochondriaThe products from Glycolysis go through aerobic respiration.In this process pyruvate is turned into Acetyl CoA to begin the Krebs CycleThe Krebs cycle produces 34 ATP molecules!!
7 Step 2b: Fermentation Only if oxygen is NOT present. 2 types of fermentation:Alcoholic fermentation:EX: In yeasts it produces alcohol and carbon dioxide.It causes bread dough to rise. Another example is grapesalcohol.Lactic Acid fermentationOccurs in muscle cells,The pyruvic acid accumulates as a result of glycolysis producing lactic acid, which makes muscles sore.