Biology MCQ on Plasmid for NEET and Medical Exam 2021

MCQ on Plasmid: Biology is one of the most important and vital sections in NEET. It includes theories, descriptions, discoveries, diagrams, definitions, explanation of differences and relations. Most of the concepts covered in the NEET syllabus are from the NCERT syllabus of Class 11 & 12. Other related sources make up for the rest of the syllabus.

MCQ on Plasmid

In this post we are providing you MCQ on Plasmid, which will be beneficial for you in upcoming NEET, AIIMS, JIPMER, PGIMER, CBSE Board, ICSE Board, Class 12th, 11th.

MCQ on Plasmid

Q1. Antibiotics are used in genetic engineering. They are useful to  ______.
a) keep culture free of microbial infections
b) select healthy vectors
c) identify replication start sites
d) selectable markers

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(d) selectable markers

Q2. Find the incorrect statement about plasmids.
a) they are circular
b) they replicate independently
c) they are transferrable
d) they are single stranded

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(d) they are single stranded

Q3. Which one of the following is correct for the plasmid pBR322 of E.coli?

MCQs on Plasmid
a) ampR and tetR – antibiotic resistance genes
b) Hind III and EcoRI – selectable markers
c) rop – reduced osmotic pressure
d) ori – original restriction enzyme

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(a) ampR and tetR – antibiotic resistance genes

Q4. A single-stranded, radiolabelled molecule of nucleic acids is called ______.
a) plasmid
b) vector
c) probe
d) selectable marker

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Q5.  Replication of plasmid DNA other than initiation is controlled by ______.
a) bacterial gene
b) mitochondrial gene
c) plasmid DNA
d) none of these

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(a) bacterial gene

Q6. A vector that can clone only a small DNA fragment is ______.
a) cosmid
b) plasmid
c) Yeast artificial chromosome
d) Bacterial artificial chromosome

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(b) plasmid

Q7. Which of the following gene helps in identifying transformed cells?
a) plasmid
b) selectable marker
c) structural gene
d) vector

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(b) selectable marker

Q8. The Ti plasmid is found in ______.
a) Agrobacterium
b) Yeast as a 2mm plasmid
c) Rhizobium of the roots of leguminous plants
d) Azotobacter

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(a) Agrobacterium

Q9. If the plasmid and the foreign DNA are cut by the same restriction endonuclease, recombinant DNA can be formed by joining both by ______.
a) Polymerase III
b) EcoRI
c) Ligase
d) Taq polymerase

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(c) Ligase

Q10. The DNA molecule used for integrating foreign gene for cloning is called ______.
a) vector
b) carrier
c) template
d) transformer

View Answer

(a) vector

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