Transcript Aerobic Respiration Chapter 3.2 McGraw-Hill Ryerson Biology 12 (2011) Aerobic Respiration • Aerobic Respiration: catabolic pathways that require oxygen • Anaerobic respiration: catabolic pathways that exclude oxygen.

Aerobic Respiration
Chapter 3.2
McGraw-Hill Ryerson
Biology 12 (2011)
Aerobic Respiration
• Aerobic Respiration: catabolic pathways that
require oxygen
• Anaerobic respiration: catabolic pathways that
exclude oxygen
You are going to learn all of this
Refer to pg 123 for a
summarized table
Refer to section 3.2
frequently to
ensure knowledge
of material
Glycolysis: Be sure to refer to pg 124-125
Pyruvate Oxiation: Refer to pg 126
• Krebs Cycle: Refer to pg 126-127
Oxidative Phosphorylation: Pg 128
Summary of Aerobic Respiration
• Refer to pg 130
Glycolysis
- Happens in cytoplasm
- Yields 2 net ATP, and 2 NADH (but must enter mitochondria)
Pyruvate Oxidation
- Pyruvate is oxidized into acetyl-CoA and CO2 is released
- Pyruvate molecules move from cytoplasm into mitrochondrion
- NADH is formed per pyruvate (so 2 since 1 glucose can make 2 pyruvates)
Krebs Cycle
- Happens in Mitochondrial matrix
- Yields 1 ATP per acetyl-CoA (2 acetyl-CoA is made from 1 glucose molecule)
- 2 CO2 molecules released per acetyl-CoA (Thus 4 is released from 2 acetyl-CoA)
- 3 NADH + 1 FADH2 released per acetyl-CoA (Thus 6 NADH and 2 FADH2 from 2 acetyl-CoA)
Oxidative Phosphorylation
- Happens in mitochondria and involves inner mitochondrial membrane
- Uses the NADHs and FADH2s to form ATP molecules (3 per NADH, 2 per FADH2)
*NADH from glycolysis must cross mitochondrial membrane in eukaryotes and thus is converted into
FADH2
Homework
• Pg. 133 #1, 4 - 8, 11, 12