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

1. Introduction to Biochemistry

Proteins

Biochemistry

1. Introduction to Biochemistry

Proteins

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Multiple Choice

Most enzymes are a functional type of which macromolecule?

Lipid

Protein

Carbohydrate

Nucleic acid

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Verified step by step guidance

Understand the question: The problem is asking about the macromolecule type that most enzymes belong to. Enzymes are biological catalysts that speed up chemical reactions in living organisms.

Recall the definition of enzymes: Enzymes are specialized proteins that have specific active sites to bind substrates and catalyze reactions. While other macromolecules like RNA (ribozymes) can sometimes act as catalysts, the majority of enzymes are proteins.

Review the macromolecule options: Lipids are primarily involved in energy storage and membrane structure, carbohydrates are energy sources and structural components, and nucleic acids store genetic information. Proteins, however, are versatile molecules that perform a wide range of functions, including acting as enzymes.

Connect the concept: Proteins are made up of amino acids linked by peptide bonds, and their three-dimensional structure allows them to form active sites for catalysis. This structural property is key to their role as enzymes.

Conclude the reasoning: Based on the functional role and structural characteristics of proteins, the correct answer to the question is 'Protein.'