Podcast
Questions and Answers
Before entering the Krebs cycle, pyruvate is converted to?
Before entering the Krebs cycle, pyruvate is converted to?
Acetyl-CoA
A single turn of the Krebs cycle will yield?
A single turn of the Krebs cycle will yield?
1 ATP, 3 NADH, 1 FADH2
The initial reaction of the Krebs cycle involves the addition of?
The initial reaction of the Krebs cycle involves the addition of?
2 carbon molecule to a 4 carbon molecule
The Krebs cycle occurs in the mitochondria.
The Krebs cycle occurs in the mitochondria.
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A single turn of the Krebs cycle involves 4 different decarboxylation reactions.
A single turn of the Krebs cycle involves 4 different decarboxylation reactions.
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Study Notes
Krebs Cycle Overview
- Pyruvate is converted to Acetyl-CoA before entering the Krebs cycle, linking glycolysis to this metabolic pathway.
- A single turn of the Krebs cycle produces 1 ATP, 3 NADH, and 1 FADH2, which are crucial for cellular energy production.
Initial Reaction
- The cycle begins with the addition of a 2-carbon molecule (Acetyl-CoA) to a 4-carbon molecule (oxaloacetate) to form a 6-carbon compound (citrate).
Location
- The Krebs cycle takes place in the mitochondria, the powerhouse of the cell, highlighting its role in aerobic respiration.
Decarboxylation Reactions
- Contrary to the statement of 4 decarboxylation reactions occurring in a single turn, only 2 decarboxylation steps take place, resulting in the release of carbon dioxide.
Additional Notes
- The Krebs cycle is also known as the citric acid cycle or the tricarboxylic acid (TCA) cycle, emphasizing its significance in metabolic processes.
- NADH and FADH2 generated are key electron carriers that feed into the electron transport chain for ATP synthesis.
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Description
Explore the essentials of the Krebs cycle, a pivotal metabolic pathway in cellular respiration. This quiz covers key concepts such as the conversion of Pyruvate to Acetyl-CoA, the production of ATP, NADH, and FADH2, and the cycle's location in mitochondria. Test your knowledge on the decarboxylation reactions and the significance of this cycle.
