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

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Multiple Choice

Which of the following statements about glycine is true?

Glycine is the only amino acid with a hydrogen atom as its side chain (R group).

Glycine has a sulfur-containing side chain.

Glycine is classified as an aromatic amino acid.

Glycine contains a chiral center at its alpha carbon.

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Verified step by step guidance

Understand the structure of glycine: Glycine is the simplest amino acid with the molecular formula NH₂-CH₂-COOH. Its side chain (R group) is a single hydrogen atom.

Analyze the first statement: 'Glycine is the only amino acid with a hydrogen atom as its side chain (R group).' This is correct because glycine's R group is indeed a hydrogen atom, making it unique among amino acids.

Evaluate the second statement: 'Glycine has a sulfur-containing side chain.' This is incorrect because glycine does not contain sulfur; amino acids like cysteine and methionine have sulfur-containing side chains.

Evaluate the third statement: 'Glycine is classified as an aromatic amino acid.' This is incorrect because aromatic amino acids, such as phenylalanine, tyrosine, and tryptophan, have aromatic rings in their structure, which glycine lacks.

Evaluate the fourth statement: 'Glycine contains a chiral center at its alpha carbon.' This is incorrect because glycine's alpha carbon is bonded to two identical hydrogen atoms, making it achiral (not chiral).