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Aerobic Cell Respiration - Review. Luxi Nanthakumar, Andy Rambarack. What is it?. C 6 H 12 O 6 + 6O 2  6H 2 O + 6CO 2 + 36 ATP Glucose + Oxygen  Water + Carbon Dioxide Metabolic reactions to convert nutrients into energy. Why is it important?. We eat glucose

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aerobic cell respiration review

Aerobic Cell Respiration - Review

Luxi Nanthakumar,

Andy Rambarack

what is it
What is it?
  • C6H12O6 + 6O2 6H2O + 6CO2 + 36 ATP
  • Glucose + Oxygen  Water + Carbon Dioxide
  • Metabolic reactions to convert nutrients into energy
why is it important
Why is it important?
  • We eat glucose
  • Energy in the form of ATP is produced
  • Necessary for life
how does it work
How does it work?
  • When we breathe air in…
how does it work1
How does it work?
  • When we eat food…
in the cytoplasm
In the cytoplasm…
  • 6-carbon glucose is phosphorylated using ATP which turns into ADP

ADP

ADP

ATP

ATP

P

P

transition step in mitochondria
Transition step in mitochondria
  • Pyruvate is oxidized by NAD+

NADH

NADH

NAD+

NAD+

slide19

Carbon dioxide and Acetyl-CoA!

Coenzyme-A transports the Acetyl-CoA to the matrix

in the mitochondrial matrix
In the mitochondrial matrix
  • The 2-carbon chain connects to a 4-carbon molecule (oxaloacetate), making a 6-carbon chain (citrate)

Coenzyme-A returns to pyruvate oxidation

in the krebs cycle
In the Krebs cycle
  • Citrate is oxidized … twice!
  • Producing CO2 … twice!

NAD+

NADH

CO2

krebs cycle repeats
Krebs cycle repeats
  • Because there were two pyruvate molecules
in the inner membrane of the mitochondria
In the Inner Membrane of the mitochondria…
  • Electrons from NADH pass through 3 proteins

Protein

Complex

II

Protein

Complex

I

Protein

Complex

III

NADH

slide28

Electrons from FADH2pass through 2 proteins

Protein

Complex

II

Protein

Complex

I

Protein

Complex

III

FADH2

slide29

As electrons pass through, H+ ions pumped into inter-membrane space

H+

H+

H+

H+

H+

Protein

Complex

slide30

The H+ ions return through ATP synthase

H+

H+

H+

H+

H+

ATP

Synthase

Protein

Complex

slide31

ATP is produced as H+ ions pass through ATP synthase

  • Oxygen molecules

combine with the electrons and protons to make water!

H+

ATP

Synthase

ATP

O2

H2O

remember co 2 and h 2 o
Remember CO2 and H2O?

CO2

H2O

and are products

of cellular respiration

They are expelled from the body as waste

atp accounting
ATP Accounting
  • During glycolysis, 2 ATP molecules are used to phosphorylate glucose
  • Because the NADH molecules from glycolysis must enter the mitochondria from outside, it requires 1 ATP molecule each
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