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

How many standard amino acids are incorporated into proteins during translation in eukaryotic cells?

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Understand the context of the question: Translation is the process by which ribosomes synthesize proteins using mRNA as a template. During this process, amino acids are incorporated into the growing polypeptide chain.

Recall that there are 20 standard amino acids that are encoded by the genetic code and are directly incorporated into proteins during translation in eukaryotic cells.

Note that while there are other amino acids like selenocysteine (sometimes referred to as the 21st amino acid), it is not universally considered a 'standard' amino acid because it requires a specific mechanism for incorporation and is not encoded directly by the standard genetic code.

Eliminate the incorrect options: 18 is too low, and 22 is too high. The correct number of standard amino acids is 20.

Conclude that the correct answer is 20, as these are the amino acids universally used in protein synthesis in eukaryotic cells.