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

What is a chain of more than 50 amino acids called?

Dipeptide

Oligopeptide

Protein

Polypeptide

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Verified step by step guidance

Step 1: Understand the terminology related to amino acid chains. Amino acids are the building blocks of proteins, and they can form chains of varying lengths through peptide bonds.

Step 2: Define the terms provided in the question. A dipeptide is a chain of two amino acids, an oligopeptide typically refers to a short chain of amino acids (usually fewer than 10), and a polypeptide is a longer chain of amino acids.

Step 3: Recognize that a chain of more than 50 amino acids is generally referred to as a protein. Proteins are functional biomolecules that consist of one or more polypeptide chains folded into specific three-dimensional structures.

Step 4: Note that while polypeptides can be long chains of amino acids, they are not necessarily functional proteins until they fold into their active structure. The term 'protein' is used when the chain exceeds 50 amino acids and has a functional role.

Step 5: Conclude that the correct answer to the question is 'Protein,' as it specifically refers to chains of more than 50 amino acids that are biologically active.