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 of the following joins amino acids together in a protein?

Peptide bond

Phosphodiester bond

Glycosidic bond

Disulfide bond

Previous problemNext problem

Verified step by step guidance

Understand the question: The problem is asking which type of bond joins amino acids together in a protein. This requires knowledge of protein structure and the types of bonds involved in biochemistry.

Recall the definition of a peptide bond: A peptide bond is a covalent bond formed between the carboxyl group (-COOH) of one amino acid and the amino group (-NH2) of another amino acid during a condensation reaction, releasing a molecule of water (H₂O).

Compare the other bond types: Phosphodiester bonds are found in nucleic acids, linking the sugar and phosphate groups. Glycosidic bonds are found in carbohydrates, linking monosaccharides. Disulfide bonds are covalent bonds between sulfur atoms in cysteine residues, stabilizing protein structure but not directly joining amino acids.

Identify the correct bond type: Based on the definitions, peptide bonds are specifically responsible for linking amino acids together in a protein chain.

Conclude the reasoning: The correct answer is 'Peptide bond,' as it is the bond that forms the backbone of protein structure by joining amino acids in a polypeptide chain.