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 naturally occurring amino acids are incorporated into proteins during translation in the standard genetic code?

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Understand the context: Translation is the process by which ribosomes synthesize proteins using mRNA as a template. The standard genetic code specifies which amino acids are incorporated into proteins.

Recall that the standard genetic code includes codons that correspond to amino acids. Each codon is a sequence of three nucleotides in mRNA that specifies a particular amino acid.

Identify the naturally occurring amino acids: There are 20 standard amino acids that are encoded by the genetic code and incorporated into proteins during translation. These amino acids include glycine, alanine, valine, leucine, isoleucine, serine, threonine, cysteine, methionine, proline, phenylalanine, tyrosine, tryptophan, histidine, lysine, arginine, aspartic acid, glutamic acid, asparagine, and glutamine.

Clarify exceptions: While there are other amino acids like selenocysteine and pyrrolysine that can be incorporated into proteins, they are not part of the standard genetic code and require special mechanisms for incorporation.

Conclude that the correct answer is based on the standard genetic code, which specifies 20 amino acids that are incorporated into proteins during translation.