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

Essential Amino Acids

Biochemistry

3. Amino Acids

Essential Amino Acids

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Multiple Choice

Which of the following amino acids is considered essential in humans?

Glycine

Leucine

Tyrosine

Glutamine

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Verified step by step guidance

Understand the concept of essential amino acids: Essential amino acids are those that cannot be synthesized by the human body and must be obtained through the diet. Non-essential amino acids, on the other hand, can be synthesized by the body.

Review the list of essential amino acids in humans: The essential amino acids include histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine.

Analyze the options provided: Glycine, Tyrosine, and Glutamine are non-essential amino acids because the human body can synthesize them. Leucine, however, is an essential amino acid and must be obtained through dietary sources.

Confirm the classification of Leucine: Leucine is one of the branched-chain amino acids (BCAAs) and plays a critical role in protein synthesis and metabolic functions, making it essential for humans.

Conclude that Leucine is the correct answer: Based on the definition and classification of essential amino acids, Leucine is the amino acid from the given options that is considered essential in humans.