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Questions and Answers
What is the initial carbon-based molecule that enters the glycolysis process?
What is the initial carbon-based molecule that enters the glycolysis process?
glucose
How many ATP molecules are directly consumed in the initial steps of glycolysis?
How many ATP molecules are directly consumed in the initial steps of glycolysis?
2
What is the role of NAD+ in glycolysis?
What is the role of NAD+ in glycolysis?
It accepts high-energy electrons.
Besides ATP and NADH, what other carbon-based molecule is produced in glycolysis?
Besides ATP and NADH, what other carbon-based molecule is produced in glycolysis?
What is the net number of ATP produced during glycolysis, when considering ATP required to initiate reaction?
What is the net number of ATP produced during glycolysis, when considering ATP required to initiate reaction?
Is glycolysis an aerobic or anaerobic pathway?
Is glycolysis an aerobic or anaerobic pathway?
What is the location of glycolysis in the cell?
What is the location of glycolysis in the cell?
How many carbon atoms are in each pyruvic acid molecule?
How many carbon atoms are in each pyruvic acid molecule?
What is the primary function of NADH produced in glycolysis?
What is the primary function of NADH produced in glycolysis?
How many molecules of NADH are produced per molecule of glucose during glycolysis?
How many molecules of NADH are produced per molecule of glucose during glycolysis?
Flashcards
Glycolysis
Glycolysis
The breakdown of glucose into two molecules of pyruvic acid.
Glucose
Glucose
A 6-carbon sugar that is the starting molecule in glycolysis.
Pyruvic acid
Pyruvic acid
A 3-carbon molecule produced by glycolysis.
2 ATP
2 ATP
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NADH
NADH
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Location of glycolysis
Location of glycolysis
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Anaerobic process
Anaerobic process
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Speed of glycolysis
Speed of glycolysis
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Products of glycolysis
Products of glycolysis
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Importance of glycolysis
Importance of glycolysis
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Study Notes
Cellular Respiration - Glycolysis
- Glycolysis is the first stage of cellular respiration.
- Cellular respiration has three stages: Glycolysis, Citric Acid Cycle, and Electron Transport Chain.
- Glycolysis takes place in the cytoplasm.
- Glycolysis is an anaerobic process, meaning it does not require oxygen.
Glycolysis Details
- Glucose (6 carbon molecule) is broken down into two molecules of pyruvic acid (3 carbon molecule each).
- 2 ATP molecules are used as the initial input for the reaction to get started.
- 4 ATP molecules are produced during glycolysis. This results in a net gain of 2 ATP because 2 ATP was initially used.
- 2 NADH molecules are produced during glycolysis, carrying high-energy electrons for the electron transport chain.
Cellular Respiration Overview
- The three stages of cellular respiration are: Glycolysis, Citric Acid Cycle, and the Electron Transport Chain
- Glycolysis occurs in the cytoplasm.
- The Citric Acid Cycle occurs in the mitochondria.
- The Electron Transport Chain occurs in the mitochondria.
Summary of Glycolysis
- Glycolysis is a fast process, generating thousands of ATP molecules within a few seconds.
- It breaks down glucose to produce pyruvic acid.
- Important products from glycolysis are 2 ATP, 2 NADH, and 2 pyruvic acid molecules.
- The end products of glycolysis are further broken down during the Citric Acid Cycle.
Glycolysis Review Questions
- Net ATP gain from glycolysis : 2 ATP
- Carbon-based product of glycolysis: Pyruvate
- Next step for pyruvate: Citric Acid Cycle
- NADH molecules produced in glycolysis: 2 NADH
- NADH use in cellular respiration: Electron transport chain
- Aerobic/Anaerobic: Anaerobic (does not require oxygen)
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