Describe the steps of glycolysis, the TCA cycle, and the electron transport chain including the net yield of ATP from each process© BrainMass Inc. brainmass.com June 22, 2018, 12:57 pm ad1c9bdddf
Glycolysis is the first step of both aerobic (requiring oxygen) and anaerobic (no oxygen needed) cellular respiration. Glycolysis breaks a 6 carbon glucose molecule into two molecules of pyruvate and yields 1 NADH and 2 ATP.
In this explanation MAJOR MOLECULES are CAPITALIZED, *enzymes* *have asterisks* and _Coenzymes_ or _other key molecules_ have _underscores_
I strongly suggest reviewing this with a chart from your biology text. I know this from memory but you can cite any biology book as your reference.
The steps of glycolysis are as follows:
1. GLUCOSE is phosphorylated by *Hexokinase* (or *Glucokinase* in the liver and pancreas) using the phosphate of 1 _ATP_ to yield GLUCOSE 6-PHOSPHATE (GTP) and an _ADP_ (from the _ATP_)
2. G6P is converted to FRUCTOSE 6-PHOSPHATE (F6P)
3. F6P is converted using another _ATP_ into FRUCTOSE 1,6-BISPHOSPHATE with another _ADP_ (from the second _ATP_) as a byproduct
4. FRUCTOSE 1,6-BISPHOSPHATE is broken into one GLYCERALDEHYDE 3-PHOSPHATE (PGAL) and one DIHIDROXYACETONE PHOSPHATE
4a. DIHIDROXYACETONE PHOSPHATE is converted into another PGAL. We now have two PGALs
5. Each PGAL is reduced by _NAD+_ to 1,3-BISPHOSPHOGLYCERATE. ...
This job examines the various steps of glycolysis as well as ATP processes.