1. Cellular Respiration

2. Cellular Respiration
The complex process in which cells make ATP by breaking down organic compounds

3. Cellular Respiration Done by both heterotrophs and autotrophs
by autotrophs and heterotrophs
Carbon dioxide and water
PHOTOSYNTHESIS
by autotrophs
Organic compounds and oxygen
Done by both heterotrophs and autotrophs
The products of cellular respiration are the reactants of photosynthesis

4. Cellular Respiration Glycolysis Aerobic Respiration
Organic compounds are changed into three-carbon molecules of pyruvic acid
Produces a small amount of ATP and NADH (a carrier molecule)
Anaerobic – does not require oxygen
Aerobic Respiration
Breaks down the pyruvic acid and NADH is used to make LARGE amount of ATP
Aerobic – requires oxygen

5. No oxygen?
What happens when there is no oxygen present and aerobic respiration can’t occur?
Fermentation
Does NOT produce ATP
Recycles NAD+ and NADH so that glycolysis can continue
Produces lactic acid, ethyl alcohol and or other compounds

6. Efficiency of Cellular Respiration