Presentation is loading. Please wait.

Presentation is loading. Please wait.

ENERGY Cellular Respiration.

Similar presentations

Presentation on theme: "ENERGY Cellular Respiration."— Presentation transcript:

1 ENERGY Cellular Respiration

2 Cellular Respiration Process that releases energy (chemical) by breaking down glucose and other food molecules in the presence of oxygen Occurs in both plants and animals and fungi There are 2 types Anaerobic Respiration Aerobic Respiration - Without OXYGEN - With OXYGEN

3 Products of Photosynthesis O2 + C6H12O6
(Reactants of photosynthesis CO2 + H2O + ATP) Reactants of Respirations (products of respiration

4 The Process of Respiration
Part 2

5 The whole process is divided into 2 parts:
Anaerobic No Oxygen Occurs in cytoplasm Glycolysis is an anaerobic process Glucose is broken into pyruvic acid and ATP Aerobic Oxygen Occurs in mitochondria Divided into 2 stages: Kreb cycle (citric acid cycle) Electron Transport Chain

6 GLYCOLYSIS Remember…”-lysis” means “to break”
Glucose is broken down into 2 molecules of PYRUVATE Glycolysis is anaerobic Pyruvate can then be used for cellular respiration Location: cytoplasm Occurs before cellular respiration can happen

7 Glycolysis Once glucose is imported into the cell:
Glucose is broken down into 2 molecules of pyruvate Produces 4 ATP per glucose 2 ATP molecules are “used” up leaving us with a net gain of 2 ATP molecules produced for the cell to use for energy. Pyruvate enters the mitochondria and provides the materials needed for the Kreb’s cycle


9 Electron Transport Chain
Mitochondrion Electrons carried in NADH Electrons carried in NADH and FADH2 Pyruvic acid Electron Transport Chain Glycolysis Krebs Cycle Glucose Cytoplasm Mitochondrion

10 Fermentation Sometimes a cell can’t get the oxygen that it needs to carry out aerobic respiration. It carries out fermentation to make energy instead (ATP) Less EFFECTIVE, doesn’t make as much ATP Location: Cytoplasm

Isn’t a “clean burn” so nasty, or intoxicating, waste products are left behind There are 2 types Alcoholic Fermentation Lactic Acid Fermentation -Produces lactic acid as a waste product -Is part of the burn you feel in your muscles when you exercise. Produces ethanol (alcohol) as a waste product Used for producing beer, wine, and rising bread

12 Lactic Acid Fermentation
Glucose Pyruvic acid Notice that a total of 2 ATP molecules are made for each molecule of glucose during glycolysis Notice that NAD+ is “regenerated” to be used in glycolysis This is a low energy yield process (only 2 ATP’s) but this can be enough to sustain our cells when we can’t get enough oxygen

13 AEROBIC RESPIRATION Requires Oxygen More effective, make MUCH MORE ATP
Is a “clean burn” – no nasty waste products left behind Location: Mitochondria

KNOW THE FORMULA!!! C6H12O6 + O2  H2O + CO2 + ATP GLUCOSE (FOOD) OXYGEN WATER CARBON DIOXIDE Processes associated with it Glycolysis Krebs Cycle Electron Transport Chain (ETC)

15 Kreb’s Cycle (citric acid cycle)
Breaks pyruvate down into CO2 Occurs in the mitochondria Produces 2 ATP per glucose Produces NADH & FADH2 FADH2 and NADH provide power for the ETC FADH2 and NADH are carrying chemical energy The carbon dioxide produced here diffuses out of the mitochondria, out of the cell and into the bloodstream where it is carried to the lungs and diffuses into the air that we exhale.

16 Citric Acid Production



19 Electron Transport Chain
FADH2 and NADH pass some of their electrons onto the ETC ETC is like a game of hot potato, where electrons from FADH2 and NADH are the potato, and proteins in the mitochondria are the people passing the potato. OXYGEN IS REQUIRED. The flow of electrons down the chain powers a special protein, called “ATP synthase,” which synthesizes (makes) ATP Produces 32 ATP per glucose! Total ATP production per glucose during aerobic respiration = 36 ATP

20 Electron Transport Hydrogen Ion Movement Channel Intermembrane Space ATP synthase Inner Membrane Matrix ATP Production




24 Function Location Reactants Products Equation Photosynthesis
Energy capture Chloroplast CO2 and H2O C6H12O6 and O2 6CO2 + 6H2O  C6H12O6 + 6O2 Cellular Respiration Energy release Mitochondria C6H12O6 and O2 CO2 and H2O 6O2 + C6H12O6  6CO2 + 6 H2O Function Location Reactants Products Equation

Download ppt "ENERGY Cellular Respiration."

Similar presentations

Ads by Google