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Transcript
Explain: Powering Cellular Activities Update TOC Create Section Header Include Key Idea (p 318) Include Linking Question How Cells Convert Food Into Energy Cellular Respiration occurs in ALL cells (plant/animal/etc.) ALL THE TIME! Definition: Cellular Respiration is the process by which cells break down fuels ( mainly glucose) to free up the energy required for cellular functions. Aerobic respiration: Anaerobic respiration: uses oxygen does not use oxygen. Requires Oxygen! No Oxygen! Aerobic Respiration Glycolysis 2 Anaerobic Respiration Glycolysis 2 ATP Kreb's Cycle ATP Fermentation 2 ATP Electron Transport ATP Chain 34 Lactic Acid Cellular Respiration While you are watching the video, make a T-table or Venn diagram to compare & contrast aerobic and anaerobic cellular respiration Today’s Task Work at the lab tables with your group. Finalize your Ttables/Venn diagrams. Complete the Photosynthesis/Cellular Respiration worksheet All due tomorrow! Warm-Up Why is cellular respiration important for all living things? What is the relationship between photosynthesis and cellular respiration? Cellular Respiration – 2 Types Aerobic Respiration Anaerobic Respiration Requires Oxygen No Oxygen 3 steps: glycolysis, Kreb’s cycle, Electron Transport Chain 2 steps: Glycolysis, Fermentation Happens in cytoplasm Happens in cytoplasm (glycolysis) and only. mitochondria (Krebs, ETC) Much more ATP created (36-38) Only 2 ATP created Products: CO2 and H2O Products: lactic acid Sun Worship – back to the orange book Learning Target (write it in your notebook): I can describe the importance of biosynthesis and breakdown reactions for supplying energy and organic molecules for all organisms Update your TOC Some Vocab: Metabolism: the chemical reactions that take place in a cell or organism. Biosynthesis: reactions that build larger, more complex molecules (require energy) Breakdown: reactions that break down larger molecules into smaller molecules (free up energy) What are some examples of these 2 types of metabolic reactions? Where do plants get the energy they need to survive? Photosynthesis converts light energy into chemical energy stored in glucose. What do plants do with the glucose they create during photosynthesis? CO2 + H20 biosynthesis photosynthesis sugars breakdown biosynthesis So… Growth (cellulose, proteins, lipids) Cellular Respiration (energy) Storage (starch) what is the source of the mass increase in plants during their growth? Where do animals get the matter ad energy they need to grow and survive? Carbohydrates, Fats, Protein biosynthesis digestion Growth (proteins, lipids) Organic breakdown molecules Glucose, Amino acids, Fatty acids biosynthesis Cellular Respiration (energy) Storage (glycogen, lipids) How does Energy and Matter flow through an Ecosystem? Sun Worship Autotroph (producer) Heterotrophs (consumers) Some questions: Create a well- labeled diagram, ENDING with a chicken drumstick, showing where the CARBON in the chicken leg originally came from: (Where does the carbon start and how does it get into the drumstick?) List 3 examples of (each) biosynthesis and breakdown reactions. Why are biosynthesis and breakdown reactions important for all organisms? Additional Info From Mz. R… Metabolism There are 2 types of metabolism: biosynthesis and decomposition. Biosynthesis: Builds up (synthesizes) new, larger, more complex molecules such as starch or DNA, proteins, build tissue and blood, etc. Consumes free energy Enables organisms to grow and maintain structure. Decomposition: Larger molecules break down into smaller ones, such as glycogen to glucose, and glucose into CO2 & water. Energy becomes available.