Presentation on theme: "Respiration and Fermentation"— Presentation transcript:
1 Respiration and Fermentation More cellular processes!!!
2 How do we get energy?When you eat food from plants, such as potatoes, you are eating the plant’s stored energyBefore food can provide your body with energy, it must pass through your digestive system
3 Food gets broken down into small molecules and pass into your bloodstream Then, the molecules move into your cells where energy can be released through the process of Cellular Respiration
4 What is respiration?The process by which cells obtain energy from glucoseCells of ALL living things, even plants, carry out respiration by breaking down carbohydrates (energy stored in plants)
5 The Two Stages of Respiration Stage One: Takes place in the cytoplasmMolecules of glucose are broken downNo oxygen is usedA small amount of energy is released
6 Stage Two: Takes place in the mitochondria Small moleculesare broken down intosmaller molecules andrelease great amounts of energyOxygen is required in this stepThis is why mitochondria are called the “powerhouses” of the cell
7 Respiration Equation C6H12O6 + 6O2 6CO2 + 6H20 + Energy The products, Carbon Dioxide and Water diffuse out of the cellIn most animals, Carbon Dioxide and water leave through exhalation when you breathe out
8 How are Photosynthesis and Respiration related? They are EXACT opposites of each other!!!The waste products of Photosynthesis are needed for Respiration and the waste products of Respiration are needed for PhotosynthesisGlucose
9 Earth’s BalanceTogether, these two processes form a cycle that keeps the levels of oxygen and carbon dioxide in balance so that all organisms can survive!
10 FermentationThe process by which organisms get energy from food without using oxygen but the amount of energy released is much lowerSome single-celled organisms need to use fermentation because they live in places without oxygen
11 Alcoholic Fermentation Happens when organismsSuch as yeast break downSugars.Carbon Dioxide, a small amount of energy, and alcohol are the productsCheck for understanding: Yeast is used when baking bread. What do you think causes bread to rise when yeast undergoes fermentation?
12 Lactic Acid Fermentation Have you ever gotten sore muscles? Then you’ve experienced the effects of Lactic Acid!When your muscles use up oxygen faster than it can be replaced, fermentation happens and a product is lactic acid, which causes pain in your muscles.