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The Process of Cellular Respiration (I. Glycolysis Glycolysis (Steps to…
The Process of Cellular Respiration
I. Glycolysis
Definition: The breakdown of carbohydrates. Anaerobic catabolism of Glucose by enzymes. A "metabolic pathway".
Pathway-A sequence of reactions, usually controlled by enzymes.
Steps to the Breakdown of Glucose:
Summary:
Glucose is broken down into 2 pyruvate.
i.e.
one six Carbon molecule is broken into two three carbon molecules
The Net Products:
Two ATP and Two NADH
Phases:
1) Energy Requiring Phase
Two ATP Molecules are Used Up
Two Phosphate groups attach to a six carbon glucose molecule.
As a result, Fructose is formed.
The Fructose molecule is unstable.
The molecule splits and forms
two
three carbon sugars. Each molecule has one phosphate still attached to it.
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2) Energy Releasing Phase
Two three-carbon sugars are converted into
Two
Pyruvates (three carbon molecule)
a. Pyruvate #1
Two ATP Molecules are formed
One NADH molecule is formed
b. Pyruvate #2
Two ATP Molecules are formed
One NADH molecule is formed
Overall Product from Phases
Four
ATP Molecules
TWO ATP MOLECULES ARE USED UP
:red_flag:
Two
NADH molecules
II. Krebs Cycle
Steps
The Two Pyruvate produced from glycolysis/the breakdown of glucose enter the mitochondria of a cell.
The Two Pyruvate are converted to Acetyl-CoA
