Biochem 4: Metaboism
- 1. Bellringer Describe how acids affect proteins in the body. What do you think people mean when they say someone has a fast metabolism?
- 2. Agenda Collect Homework Guided Notes: pH and Protein NOTES: Metabolism Anabolic vs Catabolic reactions Photosynthesis Cellular Respiration Fermentation
- 3. Metabolism The word metabolism refers to all of the chemical reactions that take place within living things There are 2 types of metabolic reaction 1) Anabolic Reactions Building large molecules from small ones Anabolic reactions require energy 2) Catabolic Reactions Tearing apart large molecule into small ones Catabolic reactions release energy
- 6. Photosynthesis Photosynthesis is a chemical reaction in which plants combine water and carbon dioxide gas to create glucose (sugar). Oxygen gas is given off as a waste product.
- 8. Photosynthesis is Anabolic Photosynthesis is considered an anabolic process for 2 reasons It combines small molecules to make large. Making a single molecule of glucose requires 6 waters and 6 carbon dioxides. It requires energy. Photosynthesis is only possible when the plant absorbs energy from the sun.
- 10. Catabolic Reactions In order to use the energy stored in glucose, the molecule must be broken apart. There are 2 types of catabolic reactions Respiration: Aerobic (requires oxygen) Fermentation: Anaerobic (Doesn’t require oxygen)
- 11. Cellular Respiration Cellular Respiration uses oxygen to break down food. When glucose is broken down it releases energy. Water and Carbon Dioxide are created as waste.
- 12. Respiration explains why animals exhale CO2
- 13. Compare photosynthesis & respiration . . .
- 14. Fermentation Fermentation is a way to break down glucose without using oxygen, but produces less energy Fermentation is done by many bacteria, and by animals when they are “short of breath”. 2 types of fermentation Alcohol: Done by fungi and bacteria Lactic Acid: Done by bacteria and animals
- 15. Alcohol Fermentation Alcohol fermentation produces 2 waste products Carbon Dioxide Gas Alcohol Beer is created by allowing yeast to digest barley grain. In fact, all alcoholic beverages are created by the digestive process of microscopic organisms
- 16. Lactic Acid Fermentation Lactic Acid fermentation is used in the production of dairy items like cheese and yogurt. Humans also produce lactic acid in their muscles during intense exercise. The buildup of this acid explains why your muscles burn after working out.