Question

A region of the mRNA that is capable of binding a molecule, in turn altering the mRNA’s expression level, is called a:

1. Kozak sequence
2. SWI/SNF complex
3. Riboswitch
4. Shine-Dalgarno sequence
5. Homeobox

Answer 1

Answer

The correct answer is option c- Riboswitch

A riboswitch is a regulatory segment of an mrna molecule that regulates gene expression. It binds to a small molecule, leading to a change within the production of the proteins encoded by the mrna.

The riboswitch displays the power to manage RNA by responding to concentrations of its target molecule. The riboswitches are naturally occurring RNA molecules that allow RNA regulation. Hence, the existence of ribonucleic acid molecules provides proof to the ribonucleic acid world hypothesis that ribonucleic acid molecules were the initial molecules, and that proteins developed later within the evolution.

option a is wrong because the Kozak sequence is a nucleic acid motif that functions as the protein translation initiation site in most eukaryotic mRNA transcripts.

option b is wrong because SWI/SNF is a subfamily of ATP-Dependent chromatin remodeling complexes, which is found in eukaryotes. it's a bunch of proteins that associate to transform the way desoxyribonucleic acid is packaged.

option d is wrong because Shine-Dalgarno Sequence is a ribosomal binding site in microorganism and archaeal messenger rna, typically located around eight bases upstream of the beginning codon Aug. The RNA sequence helps recruit the ribosome to the messenger rna (mRNA) to initiate protein synthesis by aligning the ribosome with the beginning codon.

option e is wrong because homeobox may be a DNA sequence (around 180 base pairs long) found inside genes that are involved within the regulation of patterns of anatomical development (morphogenesis) in animals, fungi, plants, and diverse single-cell eukaryotes.