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

3. Amino Acids

Amino Acid Groups

Biochemistry

3. Amino Acids

Amino Acid Groups

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 term describes the number of amino acids present in a peptide chain?

Isoelectric point

Hydrophobicity index

Residue number

Molecular weight

Previous problemNext problem

Verified step by step guidance

Step 1: Understand the question. The problem is asking for the term that describes the number of amino acids present in a peptide chain. This requires knowledge of peptide structure and terminology used in biochemistry.

Step 2: Review the concept of a peptide chain. A peptide chain is composed of amino acids linked together by peptide bonds. Each amino acid in the chain is referred to as a 'residue' once it is incorporated into the peptide.

Step 3: Analyze the options provided: - Isoelectric point refers to the pH at which a molecule carries no net electrical charge. - Hydrophobicity index measures the hydrophobic nature of amino acids or peptides. - Residue number refers to the count of amino acid residues in a peptide chain. - Molecular weight is the total mass of the peptide, calculated based on the sum of the masses of its amino acids.

Step 4: Match the correct term to the definition. The term 'Residue number' directly describes the number of amino acids present in a peptide chain, as each amino acid is considered a residue.

Step 5: Conclude that the correct answer is 'Residue number,' as it specifically addresses the question about the count of amino acids in a peptide chain.