NEET MCQ on Regualtion of Gene Expression in Eukaryotes Quiz Questions

1. Eukaryotic entities

A in the presence of a cAMP molecule, it carries out protein synthesis B have only operons assisting in gene expression C transcription takes place in the nucleus and translation in the cytoplasm D transcription occurs in the cytoplasm and translation in nucleus

2. A genomic DNA possesses functioning units, a group of genes under the influence of promoters known as

A genes B operons C anticodon D codon

3. All regulatory proteins possess a common DNA binding motif that is specific flexes in their protein chains permitting them to interlock with

A the outside groove of DNA helix B the major groove of DNA helix C the minor groove of DNA helix D the inner groove of DNA helix

4. Regulatory proteins turn transcription off through binding to a site rapidly at the front of the promoter and many times even overlaps the promoter, this site is the

A regulatory site B operator site C suppressor site D transcriptional control site

5. Seemingly, the vertebrate cells contain a protein which binds to clusters of 5-methylcytosine ensuring that the bound gene stays in the “off” position This regulation on the role of gene regulation is an outcome of

A Methylation B Translation C Enhancer expression D operator suppression

6. The transcriptional gene control in eukaryotes is mediated by

A metabolites that bind to the cis-acting elements B trans-acting factors failing to bind to cis-acting elements C trans-acting factors binding to cis-acting elements D repressor proteins that bind to operator sites

7. Basic tools of genetic regulation are the ability of some proteins to bind to specific

A regulatory DNA sequences B regulatory RNA sequences C enzymes of cells D promoter portions of genes

8. In the regulation of gene expression, this is an incorrect statement

A in the bacteria, it permits to replicate with no control B in the bacteria, it permits to adapt to changing environments C permits the maintenance of homeostasis in multicellular entities D permits the functioning of multicellular entities on the whole

9. There are these many histones in the core of a nucleosome

A 8 B 6 C 4 D 2

10. In eukaryotes and bacteria, the most common form of regulation is

A promoter control B translation control C repressor control D transcriptional control