The document provides information about cellular respiration. It defines cellular respiration as the 3-step process by which glucose molecules are broken down to release usable energy. The three steps are glycolysis, the Krebs cycle, and the electron transport chain. Cellular respiration occurs in all cells and produces 32 ATP molecules from one glucose molecule with oxygen as the final electron acceptor. Fermentation is discussed as cellular respiration that can occur without oxygen to produce a small amount of ATP.

1. Honors Biology - December 12th, 2011
SWBAT: Explain the process of cellular
respiration.
Warm Up: Get a colored pencil or pen to do
homework corrections
1.) Name the two steps of photosynthesis IN
ORDER.
2.) The organelle where photosynthesis takes
place is the ___.
3.) Write the equation for chemosynthesis:

2. photosynthesis
water
Cellular Respiration
Carbon dioxide
ATP
Oxygen
autotroph
Glucose
chemical
energy
heterotroph

3. Compare and Contrast:
Photosynthesis Cellular Respiration
Organelle Involved
Is it Performed by
Autotrophs, Heterotr
ophs or Both?
Reactants
Products

4. An Introduction to Cellular Respiration:
C6 H12O6 + O2 --> CO2 + H2O + ATP
Definitio n: The 3-step process by which glucose molecules are broken down to release usable energy
Occurs in ALL cells, both eukaryotes and prokaryotes
Prokaryotes do entire process within their cytoplasm because they do not have mitochondria

5. Step 1 of 3: Glycolysis ("Glucose-breaking")
C6H12O6 enters the
cytoplasm 2 NADH + H are created. These skip step 2
and move directly to step 3.
Glycolysis
2 pyruvic acid are created. These
move to step 2.
4 ATP are created. . .
. . .2 of those ATP are released
. . .and 2 of those ATP are reused immediately

6. Steps 2 and 3: The Krebs Cycle and Electron Transport Chain
2 ATP
CO2
Oxygen
oxygen water
32 ATP
Step 2: Krebs Cycle
Step 3:
Electron Transport Chain
pyruvic acid from glycolysis
NADH + H and
FADH2
NADH + H from glycolysis made for ETC

7. For your notes:
Oxygen
NADH + H
Cytoplasm
C6H12O6 Pyruvic Acid
Kreb's Cycle (Citric Electron
Acid Cycle) FADH2 Transport Chain
Glycolysis
NADH + H
Mitochondria
Oxygen 32 ATP
4 ATP (2 usable)
Water
2 ATP CO2

8. Fermentation: Cellular Respiration in the Absence of Oxygen
This is used by prokaryotes for ALL of their ATP formation
This is used in eukaryotes as a quick boost to ATP production
We also call this ANAEROBIC RESPIRATION
There are two types of fermentation (anaerobic respiration) -- Lactic Acid
Fermentation and Alcoholic Fermenation

9. Alcoholic Fermentation Occurs in Organisms Like Yeast Anaerobically
2 ATP
Notice that again, oxygen is NOT used and only 2 ATP are produced

10. Allows glycolysis to continue
making 2 ATP when oxygen is not
available in the correct quantities