Question

What is important about the ribosomal RNA: 16S rRNA?

Select one:
a. It is the same in all bacterial species.
b. It is the small subunit of the ribosomal RNA.
c. It is the large subunit of the ribosomal RNA.
d. Different bacterial species have unique 16S rDNA sequences.

Answer 1

The 16S rRNA is part of the small subunit of the ribosome in prokaryotes and allows for the unique identification of different bacterial species by their unique 16S rDNA sequences. It is also crucial for the proper function of protein synthesis within the cell. The answer is option D.

Step-by-step explanation:

The important aspect of the ribosomal RNA, specifically the 16S rRNA, is that it is a component of the small subunit of the ribosomal RNA in prokaryotes and plays a crucial role in protein synthesis.

The 16S rRNA is significant because different bacterial species have unique 16S rDNA sequences, making it a valuable tool for identifying and classifying bacteria through molecular techniques. This rRNA ensures the proper alignment of the mRNA and the ribosomes and catalyzes the formation of peptide bonds between amino acids during protein synthesis. The 16S rRNA is found in the 30S small subunit of the prokaryotic ribosomes, while eukaryotic cells typically contain the 18S rRNA in their small 40S subunit.