CBSE Class 12 Biotechnology Principles and Processes Multiple Choice Questions with Answers. MCQ Questions Class 12 Biotechnology Principles and Processes with Answers Is Prepared Based on Latest Exam Pattern. Students can solve NCERT MCQ questions Class 12 Biotechnology Principles and Processes with Answers to know their preparation level.
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MCQ Questions Class 12 Biotechnology Principles and Processes with Answers - Set - 5
Question 1:
Gel electrophoresis is used for
(a) construction of recombinant DNA by joining with cloning vectors
(b) isolation of DNA molecules
(c) cutting of DNA into fragments
(d) separation of DNA fragments according to their size.
Correct Answer – (D)
Question 2:
Which one of the following is used as vector for cloning genes into higher organisms?
(a) Baculovirus
(b) Salmonella typhimurium
(c) Rhizopus nigricans
(d) Retrovirus
Correct Answer – (D)
Question 3:
In genetic engineering, the antibiotics are used
(a) as selectable markers
(b) to select healthy vectors
(c) as sequences from where replication starts
(d) to keep the cultures free of infection.
Correct Answer – (A)
Question 4:
Commonly used vectors for human genome sequencing are
(a) T – DNA
(b) BAC and YAC
(c) expression vectors
(d) T/A cloning vectors.
Correct Answer – (B)
Question 5:
Genes of interest can be selected from a genomic library by using
(a) Restriction enzymes
(b) Cloning vectors
(c) DNA probes
(d) Gene targets
Correct Answer – (A)
MCQ Questions Class 12 Biotechnology Principles and Processes With Answers
Question 6:
In genetic engineering, a DNA segment (gene) of interest, is transferred to the host cell through a vector. Consider the following four agents (i-iv) in this regard and select the correct option about which one or more of these can be used as a vector/vectors.
(i) Bacterium (ii) Plasmid
(iii) Plasmodium (iv) Bacteriophage
(a) (i), (ii) and (iv)
(b) (i) only
(c) (i) and (iii)
(d) (ii) and (iv)
Correct Answer – (D)
Question 7:
There is a restriction endonuclease called EcoRI. What does “co” part in it stand for?
(a) colon
(b) coelom
(c) coenzyme
(d) coli
Correct Answer – (D)
Question 8:
A single strand of nucleic acid tagged with a radioactive molecule is called
(a) vector
(b) selectable marker
(c) plasmid
(d) probe.
Correct Answer – (D)
Question 9:
The introduction of T-DNA into plants involves
(a) exposing the plants to cold for a brief period
(b) allowing the plant roots to stand in water
(c) infection of the plant by Agrobacterium tumefaciens
(d) altering the pH of the soil, then heat-shocking the plants.
Correct Answer – (C)
Question 10:
Which of the following restriction enzymes produces blunt ends?
(a) SalI
(b) EcoRV
(c) XhoI
(d) HindIII
Correct Answer – (B)
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