Aerobic respiration and the Krebs cycle

1.

Aerobic respiration and the Krebs cycle
Learning objectives
● Be able to follow the flow of carbon and energy through
the Krebs cycle
● Be able to reproduce the kerb cycle.
● Be able to describe the Krebs cycle as an oxidative
process.

2.

LINK
REACTION
Pyruvate
Coenzyme A (CoA)
NAD
NADH
CO2
Acetyl CoA
● Remember glycolysis produces 2 molecules of pyruvate
per molecule of glucose.

3.

Yield from
LINK
REACTION
Input
Output
2 pyruvate
2 Acetyl CoA
2 CO2
2 NAD
2 NADH

4.

= 1 CARBON ATOM
LINK
REACTION
PYRUVATE
CO2
ACETYL CoA

5.

Yield from
KREB
CYCLE
Input
Output
2 Acetyl Co A
4 CO2
6 NAD
KREB
CYCLE
6 NADH
2 FAD
2 FADH2
2 ADP
2 ATP

6.

First we are going to
follow the number of
carbon atoms
CO2
?
v
CO2

7.

Next we are going to
follow the relative
amount of energy in
the molecules.
CO2
?
Where is this energy
transferred?
v
CO2

8.

Where is this energy
transferred?
NADH
CO2
NADH
v
NADH
FADH2
CO2
ATP

9.

Finally can you add
the chemical names
of the Krebs cycle.

10.

Yield from
KREB
CYCLE
Input
Output
2 Acetyl Co A
4 CO2
6 NAD
KREB
CYCLE
6 NADH
2 FAD
2 FADH2
2 ADP
2 ATP

11.

Aerobic respiration and the Krebs cycle
Learning objectives
● Be able to follow the flow of carbon and energy through
the Krebs cycle
● Be able to reproduce the kerb cycle.
● Be able to describe the Krebs cycle as an oxidative
process.