How many carbon atoms are released as carbon dioxide during the link reaction per glucose molecule?
Understand the Problem
The question is asking about the number of carbon atoms that are released as carbon dioxide during the link reaction of glucose metabolism. Specifically, it seeks to know how many of these atoms are produced for each molecule of glucose during this metabolic step.
Answer
2 carbon atoms.
In the link reaction, 2 carbon atoms are released as carbon dioxide per glucose molecule.
Answer for screen readers
In the link reaction, 2 carbon atoms are released as carbon dioxide per glucose molecule.
More Information
The link reaction, also known as pyruvate oxidation, occurs between glycolysis and the citric acid cycle. During this reaction, each pyruvate molecule (of which there are two per glucose) releases one carbon atom in the form of CO2, totaling two carbon atoms per glucose.
Tips
A common mistake is to confuse how many carbon atoms are released during different steps of cellular respiration. Remember that glycolysis yields 2 molecules of pyruvate from one glucose, both of which enter the link reaction, releasing one carbon each.
Sources
- Question about carbon atoms - Brainly - brainly.com
- Lesson Explainer: The Link Reaction and Krebs Cycle - Nagwa - nagwa.com
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