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1. Introduction to Genetics51m
2. Mendel's Laws of Inheritance3h 37m
3. Extensions to Mendelian Inheritance2h 41m
4. Genetic Mapping and Linkage2h 28m
5. Genetics of Bacteria and Viruses1h 21m
6. Chromosomal Variation1h 48m
7. DNA and Chromosome Structure56m
8. DNA Replication1h 10m
9. Mitosis and Meiosis1h 34m
10. Transcription1h 0m
11. Translation58m
12. Gene Regulation in Prokaryotes1h 19m
13. Gene Regulation in Eukaryotes44m
14. Genetic Control of Development44m
15. Genomes and Genomics1h 50m
16. Transposable Elements47m
17. Mutation, Repair, and Recombination1h 6m
18. Molecular Genetic Tools19m
- Genetic Cloning
  9m
- Methods for Analyzing DNA
  9m
19. Cancer Genetics29m
- Overview of Cancer
  21m
- Cancer Mutations
  7m
20. Quantitative Genetics1h 26m
21. Population Genetics50m
- Hardy Weinberg
  19m
- Allelic Frequency Changes
  31m
22. Evolutionary Genetics29m

11. Translation

Ribosomal Structure

Genetics

11. Translation

Ribosomal Structure

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Multiple Choice

Which of the following ribosomal sites is responsible for adding the amino acid to a growing polypeptide chain?

A site

C site

P site

E site

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Verified step by step guidance

Understand the role of ribosomal sites: The ribosome has three key sites known as the A (aminoacyl), P (peptidyl), and E (exit) sites, each playing a distinct role in protein synthesis.

Identify the function of the A site: The A site is where the incoming aminoacyl-tRNA, which carries a new amino acid, binds to the ribosome.

Identify the function of the P site: The P site holds the tRNA carrying the growing polypeptide chain. This is where the peptide bond forms, adding the new amino acid to the chain.

Identify the function of the E site: The E site is where the tRNA, now without an amino acid, exits the ribosome after its amino acid has been added to the polypeptide chain.

Conclude that the P site is responsible for adding the amino acid to the growing polypeptide chain, as it is where the peptide bond formation occurs, linking the new amino acid to the chain.