NEET Biology is the vey important paper in the medical entrance exam. Here, you will discover the NEET Biology MCQs and Answers for all Concepts as per the latest syllabus. Practice more on a regular basis with these NEET Biology objective questions on air pollution . NEET Biology Regulation Of Gene Expression In Eukaryotes Multiple Choice Questions
MCQs on Regulation Of Gene Expression In Eukaryotes :
1. Eukaryotic entities
(a) in the presence of 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
Answer
Answer: (c)
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
Answer
Answer: (b)
3. All regulatory proteins possess a common DNA binding motif that are specific flexess 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) inner groove of DNA helix
Answer
Answer: (b)
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
Answer
Answer: (b)
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
Answer
Answer: (a)
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
Answer
Answer: (c)
7. Basic tools of genetic regulation is 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
Answer
Answer: (a)
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 is multicellular entities
(d) permits the functioning of multicellular entities on the whole
Answer
Answer: (a)
9. There are these many histones in the core of a nucleosome
(a) 8
(b) 6
(c) 4
(d) 2
Answer
Answer: (a)
10. In eukaryotes and bacteria, most common form of regulation is
(a) promoter control
(b) translation control
(c) repressor control
(d) transcriptional control
Answer
Answer: (d)