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

A polypeptide chain is associated with which type of biomolecule?

Carbohydrate

Lipid

Protein

Nucleic acid

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Verified step by step guidance

Step 1: Begin by understanding the term 'polypeptide chain.' A polypeptide is a linear sequence of amino acids linked together by peptide bonds, which are formed during protein synthesis.

Step 2: Recall that proteins are composed of one or more polypeptide chains. These chains fold into specific three-dimensional structures to perform various biological functions.

Step 3: Compare the given biomolecules: Carbohydrates, Lipids, Proteins, and Nucleic Acids. Carbohydrates are made of sugar units, lipids are composed of fatty acids and glycerol, and nucleic acids consist of nucleotide chains. None of these structures involve polypeptide chains except proteins.

Step 4: Recognize that polypeptide chains are the building blocks of proteins, making proteins the correct association for this question.

Step 5: Conclude that the correct answer is 'Protein,' as polypeptide chains are integral to protein structure and function.