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 lists contains all three branched-chain amino acids (BCAAs)?

Alanine, Glycine, and Serine

Leucine, Isoleucine, and Valine

Lysine, Methionine, and Threonine

Phenylalanine, Tyrosine, and Tryptophan

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Verified step by step guidance

Step 1: Understand the concept of branched-chain amino acids (BCAAs). BCAAs are essential amino acids characterized by their aliphatic side chains with a branch. The three BCAAs are Leucine, Isoleucine, and Valine.

Step 2: Review the options provided in the problem. Each option lists three amino acids, and you need to identify the set that includes all three BCAAs.

Step 3: Analyze the first option: Alanine, Glycine, and Serine. None of these amino acids have branched side chains, so this option does not contain any BCAAs.

Step 4: Analyze the second option: Leucine, Isoleucine, and Valine. All three amino acids in this set are BCAAs, as they have branched aliphatic side chains.

Step 5: Confirm that the other options (Lysine, Methionine, and Threonine; Phenylalanine, Tyrosine, and Tryptophan) do not include all three BCAAs. These amino acids have different structural features and functions, and none of these sets contain Leucine, Isoleucine, and Valine together.