Table of contents

1. Matter and Measurements4h 31m
2. Atoms and the Periodic Table5h 23m
3. Ionic Compounds2h 18m
4. Molecular Compounds2h 18m
5. Classification & Balancing of Chemical Reactions3h 17m
6. Chemical Reactions & Quantities2h 27m
7. Energy, Rate and Equilibrium3h 46m
8. Gases, Liquids and Solids3h 25m
9. Solutions4h 10m
10. Acids and Bases3h 29m
11. Nuclear Chemistry56m
BONUS: Lab Techniques and Procedures1h 38m
BONUS: Mathematical Operations and Functions47m
12. Introduction to Organic Chemistry1h 34m
13. Alkenes, Alkynes, and Aromatic Compounds2h 12m
14. Compounds with Oxygen or Sulfur1h 6m
15. Aldehydes and Ketones1h 1m
16. Carboxylic Acids and Their Derivatives1h 11m
17. Amines39m
18. Amino Acids and Proteins1h 51m
19. Enzymes1h 37m
20. Carbohydrates1h 41m
21. The Generation of Biochemical Energy2h 8m
22. Carbohydrate Metabolism2h 22m
23. Lipids2h 26m
24. Lipid Metabolism1h 45m
25. Protein and Amino Acid Metabolism1h 37m
26. Nucleic Acids and Protein Synthesis2h 54m

22. Carbohydrate Metabolism

Glycolysis Summary

GOB Chemistry

22. Carbohydrate Metabolism

Glycolysis Summary

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2:36 minutes

Problem 72a

Textbook Question

Which of the following reactions in glycolysis produce ATP or NADH?
a. glucose to glucose-6-phosphate

Verified step by step guidance

Step 1: Understand the glycolysis pathway. Glycolysis is a metabolic process that converts glucose into pyruvate, producing ATP and NADH as energy carriers. It consists of 10 steps, divided into two phases: the energy investment phase and the energy payoff phase.

Step 2: Analyze the given reaction: glucose to glucose-6-phosphate. This is the first step of glycolysis, where glucose is phosphorylated by ATP to form glucose-6-phosphate. The enzyme hexokinase catalyzes this reaction.

Step 3: Recognize that this reaction is part of the energy investment phase. In this phase, ATP is consumed to phosphorylate glucose, meaning no ATP or NADH is produced in this step.

Step 4: Recall that ATP production occurs later in glycolysis during substrate-level phosphorylation, and NADH is produced during the oxidation of glyceraldehyde-3-phosphate to 1,3-bisphosphoglycerate.

Step 5: Conclude that the reaction glucose to glucose-6-phosphate does not produce ATP or NADH, as it is an energy-consuming step rather than an energy-producing step.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Glycolysis

Glycolysis is a metabolic pathway that converts glucose into pyruvate, producing energy in the form of ATP and NADH. It occurs in the cytoplasm of cells and consists of ten enzyme-catalyzed reactions. Understanding glycolysis is essential for identifying which steps produce ATP or NADH.

ATP Production

ATP (adenosine triphosphate) is the primary energy currency of the cell. In glycolysis, ATP is produced during specific steps through substrate-level phosphorylation, where a phosphate group is directly transferred to ADP. Recognizing these steps is crucial for answering questions about energy yield in glycolysis.

NADH Production

NADH (nicotinamide adenine dinucleotide) is a coenzyme that plays a key role in cellular respiration by carrying electrons to the electron transport chain. In glycolysis, NADH is generated during the oxidation of glyceraldehyde-3-phosphate. Identifying the reactions that produce NADH is important for understanding the overall energy balance of glycolysis.

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How many ATP or NADH are produced (or required) in each of the following steps in glycolysis?

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If glycolysis occurs in the cytoplasm and the citric acid cycle occurs in the mitochondrial matrix, how do the products of glycolysis get inside the mitochondrial matrix?

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Which of the following reactions in glycolysis produce ATP or NADH?

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In terms of high-energy molecules, what is the net output for one molecule of glucose undergoing glycolysis?

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