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The student is expected to: 4B investigate and explain cellular processes, including

The student is expected to: 4B investigate and explain cellular processes, including homeostasis, energy conversions, transport of molecules, and synthesis of new molecules and 9B compare the reactants and products of photosynthesis and cellular respiration in terms of energy and matter.

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The student is expected to: 4B investigate and explain cellular processes, including

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  1. The student is expected to: 4B investigate and explain cellular processes, including homeostasis, energy conversions, transport of molecules, and synthesis of new molecules and 9B compare the reactants and products of photosynthesis and cellular respiration in terms of energy and matter

  2. KEY CONCEPT The overall process of cellular respiration converts sugar into ATP using oxygen and 2 ATP.

  3. mitochondrion animal cell Cellular respiration makes ATP by breaking down sugars. • Cellular respiration is aerobic, or requires oxygen. • Aerobic stages take place in mitochondria.

  4. anaerobic process (does not require oxygen) • takes place in cytoplasm • splits glucose into two three-carbon molecules • produces 2 ATP molecules • Glycolysis must take place first.

  5. 1 ATP mitochondrion matrix (area enclosed by inner membrane) and 6CO 2 energy 2 3 energy from glycolysis ATP inner membrane and and 6H O 6O 2 2 4 Cellular respiration is like a mirror image of photosynthesis. • The Krebs cycle transfers energy to an electron transport chain. • takes place inmitochondrial matrix • breaks down three-carbonmolecules from glycolysis Krebs Cycle • makes a small amount of ATP- 2 ATP only • releases carbon dioxide • transfers energy-carrying molecules

  6. 1 ATP mitochondrion matrix (area enclosed by inner membrane) and 6CO 2 energy 2 Electron Transport 3 energy from glycolysis ATP inner membrane and and 6H O 6O 2 2 4 • The electron transport chain produces a large amount of ATP. 34 ATP produced • takes place in inner membrane • energy transferred to electron transport chain • oxygen enters process • ATP produced • water released as awaste product

  7. The equation for the overall process is: C6H12O6 + 6O2  6CO2 + 6H2O • The reactants in photosynthesis are the same as the products of cellular respiration.

  8. Summary: 3 steps: It uses 2 ATP to Break down Glucose 1stglycolysis 2 ATP 2nd Krebs cycle 2 ATP 3rd Electron Transport Chain (ETC) 34 ATP 38 ATP 34 ATP

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