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Published on: 29/08/2022
QB365 provides a detailed and simple solution for every Possible Book Back Questions in Class 12 Biology Subject - Botany - Principles and Processes of Biotechnology, English Medium. It will help Students to get more practice questions, Students can Practice these question papers in addition to score best marks.
Download Tamil Nadu 12th Standard Biology question papers, model tests, one-mark questions, important questions, and public exam papers in PDF format. Free study materials and answer keys for TN State Board students.
Questions + Answers key
Take MCQ Biology Test1.
Some of the characteristics of Bt cotton are ______.
Long fibre and resistant to aphids
Medium yield, long fibre and resistant to beetle pests
high yield and production of toxic protein crystals which kill dipteran pests.
High yield and resistant to ball worms
2.
An antibiotic gene in a vector usually helps in the selection of ______.
Competent cells
Transformed cells
Recombinant cells
None of the above
3.
An analysis of chromosomal DNA using the southern hybridisation technique does not use _____.
Electrophoresis
Blotting
Autoradiography
Polymerase Chain Reaction
4.
Which one of the following is not correct statement
Ti plasmid causes the bunchy top disease
Multiple cloning site is known as Polylinker
Non viral method transfection of Nucleic acid in cell
Polylactic acid is a kind of biodegradable and bioactive thermoplastic.
5.
Assertion (A): Agrobacterium tumefaciens is popular in genetic engineering because this bacterium is associated with the root nodules of all cereals and pulse crops
Reason(R): A gene incorporated in the bacterial chromosomal genome gets automatically transferred to the cross with which bacterium is associated.
Both assertion and reason are true. But reason is correct explanation of assertion.
Both assertion and reason are true. But reason is not correct explanation of assertion.
Assertion is true, but reason is false.
Assertion is false, but reason is true
Both assertion and reason are false.
6.
7.
Match the Following :
| Column A | Column B |
| 1 Exonuclease | a. add or remove phosphate |
| 2 Endonuclease | b. binding the DNA fragments |
| 3 Alkaline Phosphatase | c. cut the DNA at terminus |
| 4 Ligase | d. cut the DNA at middle |
| 1 | 2 | 3 | 4 |
| a | b | c | d |
| 1 | 2 | 3 | 4 |
| c | d | b | a |
| 1 | 2 | 3 | 4 |
| a | c | b | d |
| 1 | 2 | 3 | 4 |
| c | d | a | b |
8.
Which of the following one is used as a Biosensors?
Electrophoresis
Bioreactors
Vectors
Electroporation
9.
pBR 322, BR stands for ______.
Plasmid Bacterial Recombination
Plasmid Bacterial Replication
Plasmid Bolivar and Rodriguez
Plasmid Baltimore and Rodriguez
10.
11.
The process of recombinant DNA technology has the following steps
I. amplication of the gene
II. Insertion of recombinant DNA into the host cells
III. Cutting of DNA at specific location using restriction enzyme .
IV. Isolation of genetic material (DNA) Pick out the correct sequence of step for recombinant DNA technology.
II, III, IV, I
IV, II, III, I
I, II, III, IV
IV, III, I, II
12.
Consider the following statements:
I. Recombinant DNA technology is popularly known as genetic engineering is a stream of biotechnology which deals with the manipulation of genetic materials by man invitro
II. pBR322 is the first artificial cloning vector developed in 1977 by Boliver and Rodriguez from E.coli plasmid
III. Restriction enzymes belongs to a class of enzymes called nucleases.
Choose the correct option regarding above statements
I & II
I & III
II & III
I,II & III
13.
Genetic engineering is _____.
making artificial genes.
hybridization of DNA of one organism to that of the others.
production of alcohol by using micro organisms.
making artificial limbs, diagnostic instruments such as ECG, EEG etc.,
14.
EcoRI cleaves DNA at ____.
AGGGTT
GTATATC
GAATTC
TATAGC
15.
Plasmids are ______.
circular protein molecules
required by bacteria
tiny bacteria
confer resistance to antibiotics
16.
1.
(d)
High yield and resistant to ball worms
2.
(b)
Transformed cells
3.
(d)
Polymerase Chain Reaction
4.
(a)
Ti plasmid causes the bunchy top disease
5.
(a)
Both assertion and reason are true. But reason is correct explanation of assertion.
6.
(d)
7.
(d)
| 1 | 2 | 3 | 4 |
| c | d | a | b |
8.
(a)
Electrophoresis
9.
(c)
Plasmid Bolivar and Rodriguez
10.
(c)
11.
(b)
IV, II, III, I
12.
(d)
I,II & III
13.
(b)
hybridization of DNA of one organism to that of the others.
14.
(c)
GAATTC
15.
(d)
confer resistance to antibiotics
16.
(d)
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Tamilnadu Stateboard 12th Standard Subjects

Maths

Chemistry

Physics

Biology

Computer Science

Business Maths and Statistics

Economics

Commerce

Accountancy

History

Computer Applications

Biology

Computer Technology

Computer Applications

Computer Science

Business Maths and Statistics

Commerce

Economics

Maths

Chemistry

Physics

Computer Technology

History

Accountancy

Tamil

English

French
Tamilnadu Stateboard Standards