1. Cellular Respiration

2. Respiration
 Synthesises large molecules like proteins,
DNA & RNA
 Transports objects within the cell such as
chromosomes
 Pumps molecules & ions across cell
membranes using active transport

3. ATP → ADP + P
 Adenosine
triphosphate
 Splits into adenosine
diphosphate +
phosphate, energy is
released
 ATP does not travel
through membranes;
each cell makes their
own is mitochondria

4. Mitochondria
 In the mitochondria, organic compounds
are broken down by enzymes
 These are controlled reactions
 Respiration is the controlled
release of energy from organic
compounds to form ATP.
 The organic substances are USUALLY
lipids and carbohydrates

5. Anaerobic Respiration

6. Anaerobic respiration
 Without oxygen
 Glucose is converted into pyruvate; called
glycolysis
 Small amount of energy is produced
 In humans, pyruvate converted into lactic acid
 Yeast convert pyruvate into ethanol and carbon
dioxide
 All of these products are toxic!!!
 No more ATP is produced

7. Aerobic Respiration

8. Aerobic Respiration
 Pyruvate, produced by glycolysis, can be
further broken down using OXYGEN
 Occurs in Mitochondria (eukaryotes)
 Pyruvate oxidation produces up to
10 X more ATP than just glycolysis
 Carbon dioxide and water are waste
products