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 amino acid is the most abundant in the human body?

Glutamine

Phenylalanine

Lysine

Glycine

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Verified step by step guidance

Step 1: Understand the question. The problem is asking which amino acid is the most abundant in the human body. Amino acids are the building blocks of proteins and play various roles in metabolism and cellular functions.

Step 2: Recall the properties and functions of the amino acids listed. Glutamine is known for its role in nitrogen transport and being a precursor for nucleotide synthesis. Phenylalanine is an essential amino acid involved in protein synthesis and precursor for neurotransmitters. Lysine is another essential amino acid important for protein synthesis and enzyme function. Glycine is a non-essential amino acid involved in collagen formation and neurotransmission.

Step 3: Consider the abundance of amino acids in the human body. Glutamine is particularly abundant because it serves as a major nitrogen donor in metabolic processes and is stored in high concentrations in muscle tissue.

Step 4: Compare the roles and abundance of the other amino acids. While phenylalanine, lysine, and glycine are important, they are not stored or utilized in the same high quantities as glutamine.

Step 5: Conclude that glutamine is the most abundant amino acid in the human body based on its widespread role in metabolism, storage in muscle tissue, and high concentration in plasma.