Cellular respiration takes place in both plant and animal cells.
The organelle in which it takes place is the mitochondrion . – This is also known as the ‘power-house’ of the cell.
What is the relationship between respiration and cellular respiration ? CO 2 CO 2 O 2 O 2 Bloodstream Muscle cells carrying out Cellular Respiration Breathing Glucose O 2 CO 2 H 2 O ATP Lungs
In chemiosmosis , the H + diffuses back through the inner membrane through ATP synthase complexes
Driving the synthesis of ATP
Intermembrane space Inner mitochondrial membrane Mitochondrial matrix Protein complex Electron flow Electron carrier NADH NAD + FADH 2 FAD H 2 O ATP ADP ATP synthase H + H + H + H + H + H + H + H + H + H + H + H + H + H + P O 2 Electron Transport Chain Chemiosmosis . OXIDATIVE PHOSPHORYLATION + 2 1 2 Figure 6.10
Cellular Respiration NADH NADH NADH NADH FADH 2 Cytoplasm Electron shuttle across membrane Mitochondrion GLYCOLYSIS Glucose Pyruvate by substrate-level phosphorylation by substrate-level phosphorylation by oxidative phosphorylation OXIDATIVE PHOSPHORYLATION (Electron Transport and Chemiosmosis) 2 Acetyl CoA CITRIC ACID CYCLE 2 ATP 2 ATP about 34 ATP Maximum per glucose: About 38 ATP 2 2 6 2 2 2 (or 2 FADH 2 )
(yeast) NADH is oxidized to NAD + while converting pyruvate to CO 2 and ethanol
NAD NADH NADH NAD 2 2 2 2 GLYCOLYSIS 2 ADP 2 P ATP Glucose 2 Pyruvate released CO 2 2 Ethanol 2 2 Figure 6.13B
Cells use many kinds of organic molecules as fuel for cellular respiration
Carbohydrates, fats, and proteins can all fuel cellular respiration
When they are converted to molecules that enter glycolysis or the citric acid cycle
OXIDATIVE PHOSPHORYLATION (Electron Transport and Chemiosmosis) Food, such as peanuts Carbohydrates Fats Proteins Sugars Glycerol Fatty acids Amino acids Amino groups Glucose G3P Pyruvate Acetyl CoA CITRIC ACID CYCLE ATP GLYCOLYSIS