Energy in a Cell Cellular Respiration.

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Cellular Respiration Respiration is the process of breaking down food molecules to release energy. Respiration is the process of breaking down food molecules.

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Presentation transcript:

Energy in a Cell Cellular Respiration

Levels ofOrganization and Cellular Respiration AgileMind 5 Levels ofOrganization and Cellular Respiration AgileMind 5. Cellular Respiration and Energy Transfer Overview p. 5

Energy Sources AgileMind 5 Energy Sources AgileMind 5. Cellular Respiration and Energy Transfer Energy Transformation p. 3

Cellular Respiration Cellular respiration: process where mitochondria break down food molecules to produce ATP. (energy)

Mini-Quiz: Plants vs. Animals AgileMind 5 Mini-Quiz: Plants vs. Animals AgileMind 5. Cellular Respiration and Energy Transfer Energy Transformation p. 4

Plants and Cellular Respiration AgileMind 5 Plants and Cellular Respiration AgileMind 5. Cellular Respiration and Energy Transfer Fermentation and Metabolism p. 10

Breaking Down Food AgileMind 5 Breaking Down Food AgileMind 5. Cellular Respiration and Energy Transfer Energy Transformation p. 5

Enzymes – Activation Energy AgileMind 5 Enzymes – Activation Energy AgileMind 5. Cellular Respiration and Energy Transfer Energy Transformation p. 7 - 9

Energy from Food AgileMind 5 Energy from Food AgileMind 5. Cellular Respiration and Energy Transfer Biochemistry of Cellular Respiration p. 2

Cellular Respiration Three stages in cellular respiration: glycolysis, citric acid cycle, and electron transport chain.

Cellular Respiration in a Brain Cell AgileMind 5 Cellular Respiration in a Brain Cell AgileMind 5. Cellular Respiration and Energy Transfer Biochemistry of Cellular Respiration p. 3

Cellular Respiration Mitochondria is called the powerhouse of the cell because it is the site of cellular respiration.

Cellular Respiration More work a cell does, the more mitochondria it has.

Cellular Respiration Glycolysis: first stage of cellular respiration.

Cellular Respiration Takes place in the cytoplasm of the cell.

Cellular Respiration One C6H12O6 (glucose) is broken down into 2 pyruvic acid molecules. (a 3 C molecule)

Cellular Respiration For every glucose molecule broken down, 2 ATP molecules are produced.

Glycolysis and Mini-Quiz AgileMind 5 Glycolysis and Mini-Quiz AgileMind 5. Cellular Respiration and Energy Transfer Biochemistry of Cellular Respiration p. 4 - 5

Cellular Respiration Next, the pyruvic acid moves into the mitochondria.

Cellular Respiration Citric acid cycle or Kreb’s cycle : Pyruvic acid is broken down in a series of reactions to produce 2 CO2 and 1 ATP and electrons are passed on to the electron transport chain.

Krebs Cycle and Mini-Quiz AgileMind 5 Krebs Cycle and Mini-Quiz AgileMind 5. Cellular Respiration and Energy Transfer Biochemistry of Cellular Respiration p. 6 - 7

Cellular Respiration Electron transport chain: series of proteins where electrons are passed.

Cellular Respiration Energy is released as electrons are passed from one molecule to the next.

Cellular Respiration The released energy is used to make ATP.

Electron Transport Chain and Mini-Quiz AgileMind 5 Electron Transport Chain and Mini-Quiz AgileMind 5. Cellular Respiration and Energy Transfer Biochemistry of Cellular Respiration p. 8 - 9

Overall: For every glucose that enters cellular respiration 36 ATP are produced.

Cellular Respiration Cellular respiration can be classified as aerobic: cellular respiration occurs in the presence of O2.

Cellular Respiration Most efficient form of respiration.

Cellular Respiration Krebs cycle is aerobic respiration.

Cellular Respiration Cellular respiration can also be classified as anaerobic: respiration that proceeds in the absence of O2.

Cellular Respiration Glycolysis is anaerobic respiration.

Cellular Respiration Not as efficient as aerobic. Only 2 ATP formed.

Cellular Respiration In the absence of O2, pyruvic acid backs up and is eliminated 2 ways:

Cellular Respiration In you and me, pyruvic acid is converted to lactic acid and builds up in the muscles.

Cellular Respiration In yeast, pyruvic acid converted to CO2 and ethyl alcohol. This makes bread rise.

Cellular Respiration Anaerobic respiration is also called fermentation.

Aerobic Respiration vs. Fermentation Mini-Quiz AgileMind 5 Aerobic Respiration vs. Fermentation Mini-Quiz AgileMind 5. Cellular Respiration and Energy Transfer Fermentation and Metabolism p. 6

What happens to Macromolecules. AgileMind 5 What happens to Macromolecules? AgileMind 5. Cellular Respiration and Energy Transfer Fermentation and Metabolism p. 8

Cellular Respiration Which molecule has the most stored energy: fat or carbohydrate?

Cellular Respiration Fat – it has available energy for 51 ATP.