Glycolysis Pathway Quiz

Glycolysis Pathway

• Cells transform sugars like glucose into biochemical energy in the form of ATP through the glycolysis pathway.

Glycolysis Overview

• The final product of glycolysis is pyruvate.
• Glycolysis involves 10 enzymatic reactions.

Purpose and Regulation

• The purpose of glycolysis in the cell is to convert glucose into energy.
• The step catalyzed by phosphofructokinase-1 is an irreversible reaction.

Reactions and Products

• The product of the lyase (Fructose bisphosphate aldolase) reaction in glycolysis is fructose-1,6-bisphosphate.
• 2 ATP molecules are consumed in the first two steps of glycolysis.
• The step that produces NADH is the glyceraldehyde-3-phosphate dehydrogenase reaction.
• 2 NADH molecules are produced in glycolysis.

Next Steps and ATP Production

• After glycolysis, the next steps for producing more ATP are the citric acid cycle and oxidative phosphorylation.
• In step 7 of glycolysis, glyceraldehyde-3-phosphate is formed.
• The phosphoglycerate mutase reaction (step 8) involves a mutase reaction.
• In step 9 of glycolysis, 3-phosphoglycerate is formed.
• The phosphofructokinase-1 reaction (step 1) involves a kinase reaction that is irreversible.
• 2 pyruvate molecules are formed for each glucose broken down in glycolysis.

ATP's Role

• ATP is consumed in the early stages of glycolysis and produced in the later stages.
• The entry of glucose 6-phosphate at the 2nd step does not affect the number of ATPs produced by glycolysis.
• Glycogen can be broken down into glucose 1-phosphate, which enters glycolysis at the 2nd step.

Products and Aerobic Respiration

• The products of glycolysis that can be used in aerobic respiration to produce more energy are NADH, FADH2, and pyruvate.
• ATP is produced in the final step of glycolysis.