About this video

• Video Title: Respiration - Glycolsis (Part 2) | BIALIGY.com
• Channel: BIALIGY
• Speakers: None listed.
• Duration: 00:08:48

Overview

This video explains the second phase of glycolysis, the "energy payoff phase." It details how the two glyceraldehyde-3-phosphate (G3P) molecules produced in the energy investment phase are further processed to generate ATP and NADH, ultimately resulting in two molecules of pyruvate.

Key takeaways

• Energy Payoff Phase: This phase follows the energy investment phase and focuses on converting the two G3P molecules into pyruvate.
• Exergonic Reactions: The energy payoff phase involves exergonic reactions that release energy, primarily in the form of ATP.
• Dehydrogenation and Phosphorylation: Key reactions include dehydrogenation, where NAD+ is reduced to NADH by gaining a hydrogen, and phosphorylation, where a phosphate group is added.
• ATP Production: Through these processes, a net gain of 2 ATP molecules is achieved (4 ATP produced minus the 2 ATP invested in the previous phase).
• End Product: The final product of glycolysis is two molecules of pyruvate, a three-carbon molecule.