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

Which of the following types of organic molecules functions to help speed up biological chemical reactions?

Lipids

Carbohydrates

Proteins (enzymes)

Nucleic acids

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Verified step by step guidance

Understand the role of enzymes in biological systems: Enzymes are specialized proteins that act as biological catalysts, speeding up chemical reactions by lowering the activation energy required for the reaction to occur.

Review the structure and function of proteins: Proteins are composed of amino acids linked by peptide bonds. Their unique three-dimensional structure allows them to bind specific substrates and facilitate reactions.

Compare the functions of the other organic molecules: Lipids primarily serve as energy storage and structural components of membranes, carbohydrates are energy sources and structural molecules, and nucleic acids store and transmit genetic information. None of these directly catalyze reactions like enzymes do.

Recognize that enzymes are a subset of proteins: While not all proteins are enzymes, all enzymes are proteins. Their catalytic activity is essential for processes such as digestion, DNA replication, and cellular metabolism.

Conclude that proteins (enzymes) are the correct answer: Based on their ability to speed up biological chemical reactions, proteins (specifically enzymes) are the organic molecules responsible for this function.