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Cellular Respiration Biology January 29, 2014

Review What’s the purpose of Photosynthesis? What’s the final product of Photosynthesis?

What is Cellular Respiration? The process of converting sugar (Glucose) into energy (ATP). Overall equation: C6H12O6 + 6O2 —> 6CO2 + 6H2O + Energy (ATP) Glucose + Oxygen —> Carbon Dioxide + Water + Energy What’s the equation for Photosynthesis?

Anaerobic Respiration 2 Types Anaerobic Respiration Does NOT require Oxygen Produces 2 ATP Occurs in cytoplasm. Aerobic Respiration Requires Oxygen Produces 36 ATP Occurs in eukaryotic cells’ mitochondria and cytoplasm.

3 Stages Glycolysis What does this word mean? The Krebs Cycle Electron Transport Chain

1. Glycolysis Glyco (Sugar) + Lysis (Break Down) Occurs in the cytoplasm Split Glucose up into 2 molecules of Pyruvic Acid Makes 2 ATP Uses up 2 ATP, but makes 4 ATP = 2 ATP Sends off electrons ****More on this later.

2. The Krebs Cycle Occurs in the mitochondrial matrix. Takes and breaks down Pyruvic acid from Glycolysis, and produces Carbon Dioxide (CO2). Makes 2 ATP Sends off electrons

Electron Carriers are like busses. 2 Types NADH FADH2 They carry electrons to the electron transport chain, which will be used to make ATP.

3. Electron Transport Chain Occurs in the intermembrane space (cristae) of mitochondrion. Starts with electrons (which build up inside the matrix) Requires Oxygen Produces Water Produces 32 ATP

Summary Glycolysis Krebs Cycle ETC Occurs in cytoplasm Makes net of 2 ATP Occurs in Mitochondria Makes 2 ATP Makes 32 ATP

Review Cellular respiration is called aerobic, because it requires what? How many ATP does Glycolysis produce? Where does Glycolysis take place? What’s the purpose of electron carriers? What’s a waste product of cellular respiration? What’s the overall equation for cellular respiration?

Anaerobic Respiration 2 Types Anaerobic Respiration Does NOT require Oxygen Produces 2 ATP Occurs in cytoplasm. Aerobic Respiration Requires Oxygen Produces 36 ATP Occurs in eukaryotic cells’ mitochondria and cytoplasm.

2 Types of Anaerobic Respiration Alcoholic Fermentation Starts with Glycolysis Occurs in yeast, plants, and other one-celled organisms. Produces 2 ATP and ethyl alcohol Lactic Acid Fermentation Starts with Glycolysis Occurs in animal muscle cells and some one-celled organisms. Produces 2 ATP and Lactic Acid Produces soreness when it builds up in your muscles.

FOLDABLES

Light-Independent Rxns Electron Transport Chain TABS Photosynthesis Cellular Respiration What Happens? Occurs Where? Reactants Glycolysis Light-Dependent Rxns The Krebs Cycle Light-Independent Rxns Electron Transport Chain Products Reactants | Products Overall Equation

What Happens The cell breaks down sugar (Glucose) to make energy (ATP).

Occurs Where? Cytoplasm -> Glycolysis Mitochondria -> Matrix (The Krebs Cycle) -> Intermembrane Space (ETC)

Glycolysis Occurs in Cytoplasm Splits Glucose Makes 2 molecules of Pyruvic Acid Makes 2 ATP Sends off electrons

The Krebs Cycle Occurs in the Mitochondrial Matrix Breaks down pyruvic acid and produces CO2 Makes 2 ATP Sends off electrons

Electron Transport Chain Occurs in the intermembrane space (cristae) of mitochondria Starts with electrons Requires oxygen Produces water Makes 32 ATP

Reactants Sugar (Glucose) Oxygen

Products Water (H2O) Carbon Dioxide (CO2) Energy (ATP)

Overall Equation C6H12O6 + 6O2 —> 6CO2 + 6H2O + Energy (ATP)

Review

Chapter 4 Vocabulary Quiz TOMORROW. Independent Practice Complete chapter 4 vocabulary, and show for a grade. -> DUE TODAY Chapter 4 vocabulary worksheet (due Thursday). Complete study guide (due Thursday). Study foldable and ATP notes for review game. Chapter 4 Vocabulary Quiz TOMORROW.