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 Group

Biochemistry

4. Protein Structure

Peptide Group

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Multiple Choice

Which atoms are not part of the peptide group?

Carbonyl group atoms

First R-group atom

Amide group atoms

α-carbons

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Verified step by step guidance

Understand the structure of a peptide bond: A peptide bond is formed between the carboxyl group of one amino acid and the amino group of another, resulting in a covalent bond known as an amide bond.

Identify the atoms involved in the peptide bond: The peptide bond includes the carbonyl carbon (C=O) and the nitrogen (N) from the amide group, along with the hydrogen attached to the nitrogen.

Recognize the role of α-carbons: The α-carbon is the central carbon atom in an amino acid to which the amino group, carboxyl group, hydrogen atom, and R-group (side chain) are attached. It is adjacent to the peptide bond but not part of it.

Consider the R-group (side chain): The first atom of the R-group is not involved in the peptide bond formation. The R-group varies between different amino acids and is not part of the peptide linkage.

Conclude which atoms are not part of the peptide group: Based on the structure, the first R-group atom and the α-carbons are not part of the peptide bond itself, as they do not participate in the formation of the amide linkage.