Cellular respiration process 2015817 1

Major pathways of glucose utilization


CELLULAR RESPIRATION

STAGES OF CELLULAR RESPIRATION
• Glycolysis
• The Krebs Cycle
• The Electron Transport Chain (ETC)


OVERALL EQUATION FOR CELLULAR RESPIRATION

C6H12O6 + 6O2

6CO2 + 6H20 + ATP


WHERE DOES CELLULAR RESPIRATION TAKE PLACE?

It takes place in two
parts of the cell
Glycolysis occurs in
the Cytoplasm
Krebs Cycle & ETC
take place in the
Mitochondrion
Mitochondrion


CELLULAR RESPIRATION PROCESS

Occurs across
Cristae

Occurs in
Cytoplasm
Occurs in
Matrix


Aerobic Cellular Respiration


COENZYME A
Co-Enzyme A – Carrier for Acetyl units in intermediate
metabolism, fatty acid synthesis and oxidation  acetyl
coA



Glycolysis


Glycolysis


The glycolytic pathway consist of ten enzyme-catalyzed reactions that
begin with a glucose and split it into two molecules of pyruvate

Pyruvate kinase

Overall equation for glycolysis


GLYCOLYSIS SUMMARY
Takes place in the Cytoplasm
Glucose splits into 2 molecules of Pyruvate
produces a net gain of 2 ATP molecules &
2NADH (2x3 ATP)
Product: pyruvate
Pyruvate is oxidized to Acetyl CoA and CO2 is
removed


1. Phosphorylation of Glucose


2. Conversion of Glucose 6-Phosphate to Fructose 6-Phosphate


The phosphohexose isomerase reaction


3. Phosphorylation of Fructose 6-Phosphate to Fructose 1,6-Bisphosphate


4. Cleavage of Fructose 1,6-Bisphosphate


5. Interconversion of the Triose Phosphates

6. Oxidation of Glyceraldehyde 3-Phosphate to
1,3-Bisphosphoglycerate