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

19. Enzymes

Enzyme Classification

GOB Chemistry

19. Enzymes

Enzyme Classification

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1:07 minutes

Problem 74a

Textbook Question

Indicate whether each of the following would be a substrate (S) or an enzyme (E):
a. glucose

Verified step by step guidance

Understand the difference between a substrate and an enzyme: A substrate is a molecule upon which an enzyme acts, typically a reactant in a biochemical reaction. An enzyme is a biological catalyst, usually a protein, that speeds up the reaction involving the substrate.

Identify the role of glucose in biochemical reactions: Glucose is a simple sugar (monosaccharide) that serves as a primary energy source in many organisms. It is often a reactant in metabolic pathways such as glycolysis.

Determine whether glucose is a substrate or an enzyme: Since glucose is a reactant in enzymatic reactions (e.g., it is broken down by enzymes like hexokinase in glycolysis), it functions as a substrate.

Recall that enzymes are proteins with specific active sites that bind to substrates. Glucose does not have the structural or functional characteristics of an enzyme.

Conclude that glucose is classified as a substrate (S) in this context because it is acted upon by enzymes during metabolic processes.

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Key Concepts

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

Substrate

A substrate is a molecule upon which an enzyme acts. In biochemical reactions, substrates bind to the active site of enzymes, facilitating the conversion of substrates into products. For example, glucose can serve as a substrate for enzymes involved in glycolysis, where it is broken down to produce energy.

Enzyme

An enzyme is a biological catalyst that accelerates chemical reactions in living organisms. Enzymes are typically proteins that lower the activation energy required for a reaction, allowing it to proceed more quickly. Each enzyme is specific to a particular substrate, which determines its function in metabolic pathways.

Biochemical Reaction

A biochemical reaction is a chemical process that occurs within living organisms, involving the transformation of substrates into products. These reactions are essential for various biological functions, including metabolism, signaling, and cellular repair. Understanding the roles of substrates and enzymes is crucial for grasping how these reactions are regulated and occur efficiently.

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