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

To what does the term "polypeptide" refer?

A molecule composed of nucleotides

A complex of multiple protein subunits

A carbohydrate polymer made of glucose units

A linear chain of amino acids linked by peptide bonds

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Verified step by step guidance

Understand the term 'polypeptide': A polypeptide is a linear chain of amino acids linked together by peptide bonds, which are formed through a condensation reaction between the carboxyl group (-COOH) of one amino acid and the amino group (-NH2) of another.

Eliminate incorrect options: A molecule composed of nucleotides refers to nucleic acids like DNA or RNA, not polypeptides.

Eliminate incorrect options: A complex of multiple protein subunits refers to a quaternary protein structure, not a single polypeptide chain.

Eliminate incorrect options: A carbohydrate polymer made of glucose units refers to polysaccharides like starch or glycogen, not polypeptides.

Conclude: The correct answer is 'A linear chain of amino acids linked by peptide bonds,' as this definition aligns with the structure and formation of polypeptides.