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

Which type of macromolecule are enzymes primarily composed of?

Nucleic acids

Proteins

Lipids

Carbohydrates

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Verified step by step guidance

Step 1: Understand the role of enzymes in biological systems. Enzymes are biological catalysts that speed up chemical reactions without being consumed in the process.

Step 2: Recall the structural composition of enzymes. Enzymes are primarily composed of proteins, which are made up of chains of amino acids folded into specific three-dimensional shapes.

Step 3: Eliminate incorrect options. Nucleic acids (e.g., DNA and RNA) are involved in genetic information storage and transfer, not catalysis. Lipids are primarily involved in energy storage and membrane structure, and carbohydrates are mainly used for energy and structural purposes.

Step 4: Confirm that proteins are the correct answer. Proteins have the structural complexity and functional diversity required to act as enzymes, including active sites for substrate binding and catalysis.

Step 5: Conclude that enzymes are primarily composed of proteins, as their amino acid sequences and folding patterns allow them to perform their catalytic functions effectively.