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 statement correctly describes what proteins, lipids, and glycogen have in common?

They are all primarily used as genetic material in cells.

They are all macromolecules composed of repeating monomer units.

They are all composed exclusively of amino acids.

They all contain peptide bonds linking their monomers.

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Verified step by step guidance

Step 1: Understand the question by identifying the key terms: proteins, lipids, and glycogen. These are macromolecules, and the question asks about their common characteristics.

Step 2: Recall the definition of macromolecules. Macromolecules are large molecules composed of smaller subunits (monomers) that are often linked together in repeating patterns.

Step 3: Analyze the options provided. Evaluate each statement based on your knowledge of biochemistry: (1) Proteins, lipids, and glycogen are not primarily used as genetic material; DNA and RNA serve that function. (2) Proteins, lipids, and glycogen are indeed macromolecules composed of repeating monomer units. (3) Proteins are composed of amino acids, but lipids and glycogen are not exclusively made of amino acids. (4) Peptide bonds are specific to proteins and do not apply to lipids or glycogen.

Step 4: Focus on the correct statement: Proteins, lipids, and glycogen are all macromolecules composed of repeating monomer units. Proteins are made of amino acids, lipids often consist of fatty acids and glycerol, and glycogen is composed of glucose monomers.

Step 5: Conclude that the correct answer is the second statement, as it accurately describes the common characteristic of these macromolecules.