Question

Select the correct statement about archaeal ribosomes.

1) Archaeal ribosomal proteins are more similar to bacterial ribosomal proteins than to eukaryotic ribosomal proteins.
2) Archaeal ribosomes are susceptible to antibiotics, similar to bacterial ribosomes.
3) Archaeal ribosomes have subunits that are identical in shape and chemical components to those of bacteria.
4) The chemical components of archaean ribosomes are more similar to those of eukaryotic ribosomes than to those of bacterial ribosomes.

Answer 1

The correct statement about archaeal ribosomes is that their chemical components are more similar to eukaryotic ribosomes than to those of bacterial ribosomes, indicating a closer evolutionary relationship between archaea and eukaryotes.

Step-by-step explanation:

To select the correct statement about archaeal ribosomes, it's important to understand that archaeal ribosomal proteins and rRNAs are more similar to eukaryotic ribosomes than to bacterial ribosomes. This is in contrast to the fact that archaeal ribosomes are not identical in shape and chemical components to those of bacteria, and are not typically susceptible to antibiotics in the same way that bacterial ribosomes are.

Therefore, the correct statement is that the chemical components of archaeal ribosomes are more similar to those of eukaryotic ribosomes than to those of bacterial ribosomes. This is significant because archaea and eukaryotes share more recent common ancestry than archaea share with bacteria, as indicated by their ribosomal structure and components.