What are the reactions of glycolysis?
What are the reactions of glycolysis?
There are three stages in an aerobic glycolysis reaction: 1) decarboxylation of pyruvate 2) Citric Acid Cycle (also known as the Krebs Cycle) 3) Electron transport chain.
What are the three reactions of glycolysis?
Free energy changes
| Step | Reaction |
|---|---|
| 1 | Glucose + ATP4− → Glucose-6-phosphate2− + ADP3− + H+ |
| 2 | Glucose-6-phosphate2− → Fructose-6-phosphate2− |
| 3 | Fructose-6-phosphate2− + ATP4− → Fructose-1,6-bisphosphate4− + ADP3− + H+ |
| 4 | Fructose-1,6-bisphosphate4− → Dihydroxyacetone phosphate2− + Glyceraldehyde-3-phosphate2− |
What are the first 5 reactions of glycolysis?
The steps of glycolysis
- Reaction 1: glucose phosphorylation to glucose 6-phosphate.
- Reaction 2: isomerization of glucose 6-phosphate to fructose 6-phosphate.
- Reaction 3: phosphorylation of fructose 6-phosphate to fructose 1,6-bisphosphate.
- Reaction 4: cleavage of fructose 1,6-bisphosphate into two three-carbon fragments.
What happens in glycolysis of aerobic respiration?
Glycolysis starts with glucose and ends with two pyruvate molecules, a total of four ATP molecules and two molecules of NADH. Two ATP molecules were used in the first half of the pathway to prepare the six-carbon ring for cleavage, so the cell has a net gain of two ATP molecules and 2 NADH molecules for its use.
Is glycolysis aerobic or anaerobic?
Glycolysis occurs in both aerobic and anaerobic states. In aerobic conditions, pyruvate enters the citric acid cycle and undergoes oxidative phosphorylation leading to the net production of 32 ATP molecules. In anaerobic conditions, pyruvate converts to lactate through anaerobic glycolysis.
What is the first reaction in glycolysis?
The first step in glycolysis (Figure 9.1. 1) is catalyzed by hexokinase, an enzyme with broad specificity that catalyzes the phosphorylation of six-carbon sugars. Hexokinase phosphorylates glucose using ATP as the source of the phosphate, producing glucose-6-phosphate, a more reactive form of glucose.
Is Glycogenolysis aerobic or anaerobic?
Anaerobic
Anaerobic Metabolism Energy is contained within the molecular bonds of glucose and is released during their breakdown in a process called glycolysis (glycogen is the storage form of glucose and is broken down as glycogenolysis).
What are anaerobic and aerobic reactions?
Aerobic respiration is a set of metabolic reactions that take place in the presence of oxygen, occurring in a cell to convert chemical energy into ATPs. Anaerobic respiration is a process of cellular respiration where the high energy electron acceptor is neither oxygen nor pyruvate derivatives.
