(No Air) Without Oxygen, the Pyruvic Acids produced during Glycolysis cannot enter the Krebs Cycle. Respiration can also occur in the absence of Oxygen as well. Aerobic means “With Air” or in the presence of Oxygen. The reactants for one become the products of the other.ġ9 9.3 Fermentation Cellular Respiration is sometimes called Aerobic Respiration. (1 per Pyruvic Acid) Intermembrane Space  32 ATPġ7 Photosynthesis and Cellular Respiration can be thought of as opposite reactions. Produces: 32 ATP Water Moleculesġ6 2 ATP 2 ATP 32 ATP Cytoplasm  (Net Gain) The Matrix  Starts with: Oxygen is required High Energy Electrons carried by NADH and FADH2, (acquired in Glycolysis and the Krebs Cycle). Need to Know Occurs in the Intermembrane Space of the Mitochondria. 2 Turns of the Cycle (1 per Pyruvic Acid) Process Requires the presence of Oxygen Starts with: 2 Pyruvic Acids Produces: 2 ATP (1 per Pyruvic Acid) CO2 is produced (Waste Product) NADH and FADH2 carry electrons to the E.T.C.

Occurs in the Matrix of the Mitochondria. Produces with: A net gain of 2 ATP is made 2 NADH travels to the E.T.C. Need to know Occurs in the Cytoplasm of the Cell Starts with: 1 Glucose molecule Investment of 2 ATP. Glucose  Energy The Overall Reaction: In Words:ġ3 The Process of Cell Respiration occurs in 3 Stages Stage 1: Glycolysis More bonds to break = more caloriesġ2 Cellular Respiration – process that releases energyĬellular Respiration – process that releases energy from food (chemical energy) in the presence of oxygen. *The differences in the amount of calories for the 3 macromolecules is due to their chemical structures. Fats (approximately 9,000 calories of energy per gram). Proteins (approximately 4,000 calories of energy per gram).ĩ 3. Carbohydrates (approximately 4,000 calories of energy per gram).Ĩ 2. The 3 Main Types are… 1Ĭells consider all types of molecules as FOOD.

37,000 calories = _ Calories.ħ Cells consider all types of molecules as FOOD. For example: 100,000 calories = _ Calories.

(notice the Big “C”) There are 1,000 calories in 1 Calorie. The calories that we are familiar with are actually called kilocalories, or Calories. calorie – the amount of food energy needed to raise the temperature of 1 gram of water, 1 degree Celsius. Amounts of Energy stored in FOOD is expressed in units called calories. Short Answer: LOTS, but obviously it varies in amount. *Break a bond, Energy is released.ģ How much energy is actually present in FOOD? REMEMBER! *Make a bond, Energy is absorbed. #eating Of course, the chemical energy in food is released when the bonds of that molecule are broken down. Presentation on theme: '9.1 Cellular Respiration: An Overview'- Presentation transcript:Ģ All Living things require ENERGY, energy they acquire from the consumption of FOOD.

9.1 cellular respiration an overview