Table of contents

1. Introduction to Biochemistry4h 34m
2. Water3h 23m
3. Amino Acids8h 10m
4. Protein Structure10h 4m
5. Protein Techniques14h 5m
6. Enzymes and Enzyme Kinetics13h 38m
7. Enzyme Inhibition and Regulation 8h 42m
8. Protein Function 9h 41m
9. Carbohydrates7h 49m
10. Lipids5h 49m
11. Biological Membranes and Transport 6h 37m
12. Biosignaling9h 45m
Review 1: Nucleic Acids, Lipids, & Membranes2h 47m
Review 2: Biosignaling, Glycolysis, Gluconeogenesis, & PP-Pathway3h 12m
Review 3: Pyruvate & Fatty Acid Oxidation, Citric Acid Cycle, & Glycogen Metabolism2h 26m
Review 4: Amino Acid Oxidation, Oxidative Phosphorylation, & Photophosphorylation1h 48m

6. Enzymes and Enzyme Kinetics

Enzymes

Biochemistry

6. Enzymes and Enzyme Kinetics

Enzymes

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Multiple Choice

The term for a specific molecule on which an enzyme acts is the:

substrate

inhibitor

product

cofactor

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Verified step by step guidance

Understand the role of enzymes in biochemical reactions: Enzymes are biological catalysts that speed up chemical reactions by lowering the activation energy required for the reaction to occur.

Learn the terminology associated with enzyme activity: The molecule upon which an enzyme acts is referred to as the 'substrate.' The enzyme binds to the substrate at its active site, forming an enzyme-substrate complex.

Differentiate between the given terms: A 'substrate' is the molecule acted upon by the enzyme. An 'inhibitor' is a molecule that decreases enzyme activity, often by blocking the active site or altering the enzyme's structure. A 'product' is the molecule(s) formed after the enzyme catalyzes the reaction. A 'cofactor' is a non-protein molecule or ion that assists enzyme function, often by stabilizing the enzyme or participating in the reaction.

Relate the term 'substrate' to enzyme specificity: Enzymes are highly specific to their substrates due to the precise shape and chemical properties of their active sites. This specificity ensures that enzymes catalyze only particular reactions.

Conclude that the correct term for the molecule on which an enzyme acts is 'substrate,' as it is the starting material that undergoes transformation during the enzymatic reaction.