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

4. Protein Structure

Peptide Bond

Biochemistry

4. Protein Structure

Peptide Bond

Previous problemNext problem

Struggling with Biochemistry?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which type of bond is responsible for holding amino acids together in a polypeptide chain?

Peptide bond

Disulfide bond

Ionic bond

Hydrogen bond

Previous problemNext problem

Verified step by step guidance

Understand the structure of amino acids: Amino acids are the building blocks of proteins, and each amino acid has an amino group (-NH₂), a carboxyl group (-COOH), and a unique side chain (R group).

Learn how amino acids are linked together: Amino acids are joined through a condensation reaction (dehydration synthesis), where the carboxyl group of one amino acid reacts with the amino group of another amino acid.

Identify the bond formed during this reaction: The condensation reaction results in the formation of a covalent bond called a peptide bond. This bond connects the carbon atom of the carboxyl group to the nitrogen atom of the amino group.

Understand the role of peptide bonds in polypeptides: Peptide bonds are responsible for linking amino acids together in a linear sequence, forming a polypeptide chain, which is the primary structure of proteins.

Differentiate peptide bonds from other types of bonds: Disulfide bonds, ionic bonds, and hydrogen bonds play roles in stabilizing the tertiary and quaternary structures of proteins, but they are not responsible for linking amino acids in the primary structure.