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Questions and Answers
What is the overall reaction of glycolysis?
What is the overall reaction of glycolysis?
- Glucose + 2 NAD+ + 2 Pi + 2 ADP + 2 H+ $\rightarrow$ 2 pyruvate + 2 NADH + 2 ATP + 2 H2O + 2 H+ (correct)
- Glucose + 2 NADH + 2 ATP $\rightarrow$ 2 pyruvate + 2 NAD+ + 2 Pi + 2 ADP
- Glucose + 2 NAD+ + 2 Pi + 2 ATP $\rightarrow$ 2 pyruvate + 2 NADH + 2 ADP
- Glucose + 2 NAD+ + 2 ADP $\rightarrow$ 2 pyruvate + 2 NADH + 2 ATP
- Glucose + 2 NADH + 2 Pi + 2 ADP $\rightarrow$ 2 pyruvate + 2 NAD+ + 2 ATP
How are charges balanced in glycolysis?
How are charges balanced in glycolysis?
- By the binding of phosphate groups
- By the difference between ADP and ATP (correct)
- By the dissociation of NADH
- By the liberation of oxygen atoms
What occurs in the investment phase of glycolysis?
What occurs in the investment phase of glycolysis?
- More ATP is consumed than produced (correct)
- NADH is generated
- ATP is produced
- Pyruvate is formed
What contributes to atom balance in glycolysis?
What contributes to atom balance in glycolysis?
How are oxygen atoms contributed in glycolysis?
How are oxygen atoms contributed in glycolysis?
What is another name for the citric acid cycle?
What is another name for the citric acid cycle?
What is the primary source of acetyl-CoA for the citric acid cycle?
What is the primary source of acetyl-CoA for the citric acid cycle?
What is the main purpose of the citric acid cycle?
What is the main purpose of the citric acid cycle?
What is the reducing agent produced by the citric acid cycle?
What is the reducing agent produced by the citric acid cycle?
What is regenerated by the sequence of reactions in the citric acid cycle?
What is regenerated by the sequence of reactions in the citric acid cycle?
Flashcards
Glycolysis overall reaction
Glycolysis overall reaction
Glucose is broken down into two pyruvate molecules, generating ATP and NADH.
Charge balancing in glycolysis
Charge balancing in glycolysis
The difference in charge between ADP and ATP balances the overall charge of glycolysis.
Investment phase of glycolysis
Investment phase of glycolysis
The investment phase uses more ATP than it produces, preparing glucose for the payoff phase.
Atom balance in glycolysis
Atom balance in glycolysis
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Oxygen atoms in glycolysis
Oxygen atoms in glycolysis
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Another name for the citric acid cycle
Another name for the citric acid cycle
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Acetyl-CoA source for citric acid cycle
Acetyl-CoA source for citric acid cycle
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Purpose of the citric acid cycle
Purpose of the citric acid cycle
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Reducing agent in the citric acid cycle
Reducing agent in the citric acid cycle
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Citric acid regeneration
Citric acid regeneration
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Study Notes
Glycolysis Overview
- Glycolysis is a metabolic pathway that converts glucose (C6H12O6) into pyruvate.
- It occurs in the cytosol, the liquid part of cells, in most organisms.
Energy Production
- The free energy released in glycolysis is used to form high-energy molecules:
- Adenosine triphosphate (ATP)
- Reduced nicotinamide adenine dinucleotide (NADH)
Enzymatic Reactions
- Glycolysis is a sequence of 10 reactions catalyzed by enzymes.
Evolutionary Significance
- The widespread occurrence of glycolysis in other species suggests it is an ancient metabolic pathway.
- Glycolysis can occur in oxygen-free conditions, similar to the Archean oceans, and can be catalyzed by metal ions rather than enzymes.
Types of Glycolysis
- The most common type of glycolysis is the Embden–Meyerhof–Parnas (EMP) pathway, discovered by Gustav Embden, Otto Meyerhof, and Jakub Karol Parnas.
- Other types of glycolysis include:
- Entner–Doudoroff pathway
- Heterofermentative pathways
- Homofermentative pathways
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Description
Test your knowledge of glycolysis with this quiz! Learn about the metabolic pathway that converts glucose into pyruvate, and its role in producing ATP and NADH. Challenge yourself with questions on the enzymes and reactions involved in this fundamental process.
