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-Substrate Complex

GOB Chemistry

19. Enzymes

Enzyme-Substrate Complex

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1:44 minutes

Problem 35a

Textbook Question

Match the terms (1) enzyme–substrate complex, (2) enzyme, and (3) substrate with each of the following:
a. has a tertiary structure that recognizes the substrate

Verified step by step guidance

Understand the definitions of the terms: (1) enzyme–substrate complex, (2) enzyme, and (3) substrate. An enzyme is a protein that catalyzes chemical reactions, a substrate is the molecule upon which the enzyme acts, and the enzyme–substrate complex is the temporary structure formed when the enzyme binds to the substrate.

Recall that enzymes have a specific tertiary structure, which is the three-dimensional folding of the protein. This structure includes an active site that is specifically shaped to recognize and bind to the substrate.

Identify that the term 'enzyme' corresponds to the description 'has a tertiary structure that recognizes the substrate,' because the enzyme's active site is responsible for this recognition.

Understand that the substrate is the molecule that fits into the enzyme's active site, and the enzyme–substrate complex is formed when the enzyme and substrate are bound together during the reaction.

Match the description 'has a tertiary structure that recognizes the substrate' with the term 'enzyme,' as it is the enzyme's structure that facilitates substrate recognition.

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Key Concepts

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

Enzyme

An enzyme is a biological catalyst that accelerates chemical reactions in living organisms. It is typically a protein with a specific three-dimensional structure that allows it to bind to a particular substrate. The enzyme's active site is designed to recognize and interact with the substrate, facilitating the conversion of reactants into products.

Substrate

A substrate is a molecule upon which an enzyme acts. It is the reactant that is transformed during the enzymatic reaction. The specificity of an enzyme for its substrate is determined by the shape and chemical properties of both the enzyme's active site and the substrate, ensuring that only specific substrates can bind and undergo a reaction.

Enzyme-Substrate Complex

The enzyme-substrate complex is a temporary molecular structure formed when an enzyme binds to its substrate. This complex is crucial for the catalytic process, as it stabilizes the transition state and lowers the activation energy required for the reaction to proceed. The formation of this complex is essential for the enzyme to effectively convert the substrate into products.

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Related Practice

Textbook Question

Match the terms (1) ES with the following descriptions:

a. has a tertiary structure that recognizes the substrate

b. is the combination of an enzyme with the substrate

c. has a structure that fits the active site of an enzyme

472

views

Textbook Question

Match the terms (3) substrate with the following descriptions:

a. has a tertiary structure that recognizes the substrate

b. is the combination of an enzyme with the substrate

c. has a structure that fits the active site of an enzyme

501

views

Open Question

Match the terms (a) enzyme-substrate complex, (b) enzyme and (c) substrate with each of the following:

______ Has a structure that fits the active site of an enzyme.

______ Can possess a tertiary structure that recognizes the substrate.

______ The combination of an enzyme with the substrate.

423

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Open Question

Match the terms (a) enzyme-substrate complex, (b) enzyme and (c) substrate with each of the following:

______ pyruvate

______ lipase

______ galactose transaminase

______ amylase

329

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Textbook Question

Match the terms (1) enzyme–substrate complex, (2) enzyme, and (3) substrate with each of the following:

b. the combination of an enzyme with the substrate

364

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Textbook Question

A substrate is held in the active site of an enzyme by attractive forces between the substrate and the amino acid side chains. For the outlined regions A, B, and C on the following substrate molecule:

b. Could the amino acids serine, lysine, or glutamate be present in the active site? Support your answer.

717

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Textbook Question

If each of the following amino acid side chains is present in the active site of an enzyme, indicate whether it would (a) serve a catalytic function, (b) serve to hold the substrate, or (c) both.

a. aspartate

402

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Textbook Question

If each of the following amino acid side chains is present in the active site of an enzyme, indicate whether it would (a) serve a catalytic function, (b) serve to hold the substrate, or (c) both.

d. lysine

585

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