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

During translation, new amino acids (other than the initial formyl-methionine) enter the ribosome at which site?

E (exit) site

S (synthesis) site

A (aminoacyl) site

P (peptidyl) site

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Verified step by step guidance

Understand the process of translation: Translation is the process by which ribosomes synthesize proteins using mRNA as a template. It involves three main sites on the ribosome: the A (aminoacyl) site, P (peptidyl) site, and E (exit) site.

Learn the function of the A site: The A site is where incoming aminoacyl-tRNA molecules carrying new amino acids bind to the ribosome. This is the entry point for new amino acids during protein synthesis.

Understand the role of the P site: The P site holds the tRNA carrying the growing polypeptide chain. This is where peptide bond formation occurs between the amino acid in the A site and the polypeptide chain in the P site.

Understand the role of the E site: The E site is where tRNA molecules exit the ribosome after their amino acids have been added to the growing polypeptide chain.

Conclude that new amino acids (other than the initial formyl-methionine) enter the ribosome at the A site, as this is the designated site for aminoacyl-tRNA binding during translation.