The mechanism of riboswitch regulation involves short ribonucleotide sequence elements that are capable of binding with small molecule ligands. The mechanism of riboswitch regulation involves short ribonucleotide sequence elements that are capable of binding with small molecule ligands.

a) True

b) False

a: True

Explanation:

Riboswitches are regulatory segments of mRNA which are capable of controlling/regulating gene expression simply by binding to small molecules. They are divided into two parts;

The aptamer is the part that directly binds to small molecules The expression platform is the part that changes structure in response to binding of aptamer to small molecules. This is the part that primarily controls gene expression by turning on/off relevant genes.

The correct option is a, true.