Biotechnology and its Applications Test

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Biotechnology and its Applications Test - 13

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Question 1
1 / -0

Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :
Assertion (A) : An American company is allowed the company to sell a ‘new’ variety of Basmati rice.
Reason (R) : Indian Basmati was crossed with semidwarf varieties and claimed as a novelty.

A
A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B
B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C
C. Assertion (A) is true but reason (R) is false.

D
D. Assertion (A) is false but reason (R) is true.

Solution

In 1997, an American company got patent rights on Basmati rice through the US Patent and Trademark Office. This allowed the company to sell a ‘new’ variety of Basmati which had actually been derived from Indian farmer’s varieties. Indian Basmati was crossed with semi-dwarf varieties and claimed as a novelty.
Question 2
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Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :
Assertion (A) : Transgenic mice are being used to test the safety of the polio vaccine.
Reason (R) : It could replace the use of monkeys to test the safety of batches of the vaccine.

A
A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B
B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C
C. Assertion (A) is true but reason (R) is false.

D
D. Assertion (A) is false but reason (R) is true.

Solution

Safety of polio vaccine is tested on transgenic mice, before using this vaccine on humans. It is because mice are supposed to be very much similar to human beings in their genomic arrangement. This is the reason mice are used in most medical research.
Question 3
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Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :
Assertion (A) : Transgenic animals had their DNA manipulated.
Reason (R) : 95% of all existing transgenic animals are mice.

A
A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B
B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C
C. Assertion (A) is true but reason (R) is false.

D
D. Assertion (A) is false but reason (R) is true.

Solution

Transgenic animals originate from recombinant DNA.
Question 4
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Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :
Assertion (A) : Ti plasmid (tumour-inducing plasmid) of Agrobacterium tumefaciens is used as a cloning vector.
Reason (R) : Ti plasmid integrates a segment of its DNA, termed T-DNA into the chromosomal DNA of its host plant cells.

A
A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B
B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C
C. Assertion (A) is true but reason (R) is false.

D
D. Assertion (A) is false but reason (R) is true.

Solution

The Ti plasmid (tumour-inducing plasmid) of Agrobacterium tumefaciens has been modified (does not cause tumour) and used as a cloning vector. The Ti plasmid integrates a segment of its DNA, termed T-DNA into the chromosomal DNA of its host plant cells.
Question 5
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Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :
Assertion (A) : ‘Bt’ in Bt toxin represents Bacillus thuringiensis.
Reason (R) : ‘Bt’ toxin is produced by a virus.

A
Assertion (A) is true but reason (R) is false.

B
Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C
Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

D
Assertion (A) is false but reason (R) is true.

Solution

Assertion (A) is true, but reason (R) is wrong as Bt toxin is produced by a bacterium called Bacillus thuringiensis.
Question 6
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Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :
Assertion (A) : Norman E. Borlaug was the father of "Green revolution".
Reason (R) : Green revolution is the period when there is significant increase in agricultural productivity of grains (specially wheat and rice).

A
A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B
B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C
C. Assertion (A) is true but reason (R) is false.

D
D. Assertion (A) is false but reason (R) is true.

Solution

The Green Revolution was an endeavour initiated by Norman Borlaug in the 1960s. He is known as the 'Father of Green Revolution' in world. It led to him winning the Nobel Peace Prize in 1970 for his work in developing High Yielding Varieties (HYVs) of wheat. In India, the Green Revolution was mainly led by M.S. Swaminathan. The Green Revolution resulted in a great increase in production of food grains (especially wheat and rice) due to the introduction into developing countries of new, high-yielding variety seeds, beginning in the mid-20th century. Its early dramatic successes were in Mexico and the Indian subcontinent. The Green Revolution, spreading over the period from 1967-68 to 1977-78, changed India’s status from a food-deficient country to one of the world's leading agricultural nations.
Question 7
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Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :
Assertion (A) : Genetically modification makes crops more tolerant to abiotic stress (cold, drought etc.)
Reason (R) : Genetically Modified Organisms (GMO) genes have been altered by manipulation.

A
A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B
B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C
C. Assertion (A) is true but reason (R) is false.

D
D. Assertion (A) is false but reason (R) is true.
Question 8
1 / -0

Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :
Assertion (A) : The inactive form of toxic proteins are advantageous to the bacteria producing it.
Reason( R) : Low concentration of a bacteria or virus, even at a time when the symptoms of the disease are not visible, can be detected.

A
A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B
B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C
C. Assertion (A) is true but reason (R) is false.

D
D. Assertion (A) is false but reason (R) is true.

Solution

Many proteins including certain toxins are secreted in their inactive form. They get activated, only when exposed to a specific trigger (pH, temperature, etc.). It is advantageous to the bacteria producing it because the bacterium does not get killed due to the action of protein.
Low concentration of a bacteria or virus, even at a time when the symptoms of the disease are not visible, can be detected by amplification of their nucleic acid by PCR methods.
Question 9
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Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :
Assertion (A) : GEAC will decide the safety of introducing GM organisms for public use.
Reason (R) : Genetic modifications of organisms may have opposite results when introduced into the ecosystem.

A
A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B
B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C
C. Assertion (A) is true but reason (R) is false.

D
D. Assertion (A) is false but reason (R) is true.

Solution

Genetic modification of organisms can have unpredictable results when such organisms are introduced into the ecosystem. Therefore, the Indian Government has set up organisations such as GEAC (Genetic Engineering Approval Committee), Which will make decisions regarding the validity of GM research and safety of introducing GM-organisms for public services.
Question 10
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Directions : In the following questions a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as :
Assertion (A) : Rosie was the first transgenic cow.
Reason (R) : It contained human alpha lactalbumin.

A
A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B
B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C
C. Assertion (A) is true but reason (R) is false.

D
D. Assertion (A) is false but reason (R) is true.

Solution

Transgenic animals are animals whose genes are altered by manipulation (recombinant DNA technology). Rosie was the first transgenic cow. The milk produced by it was protein rich. It contained human alpha lactalbumin. This milk was nutritionally richer and balanced as compared to that of a normal cow.

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Biotechnology and its Applications Test - 13

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Biotechnology and its Applications Test - 13

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Question 1

A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C. Assertion (A) is true but reason (R) is false.

D. Assertion (A) is false but reason (R) is true.

Solution

Question 2

A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C. Assertion (A) is true but reason (R) is false.

D. Assertion (A) is false but reason (R) is true.

Solution

Question 3

A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C. Assertion (A) is true but reason (R) is false.

D. Assertion (A) is false but reason (R) is true.

Solution

Question 4

A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C. Assertion (A) is true but reason (R) is false.

D. Assertion (A) is false but reason (R) is true.

Solution

Question 5

Assertion (A) is true but reason (R) is false.

Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

Assertion (A) is false but reason (R) is true.

Solution

Question 6

A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C. Assertion (A) is true but reason (R) is false.

D. Assertion (A) is false but reason (R) is true.

Solution

Question 7

A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C. Assertion (A) is true but reason (R) is false.

D. Assertion (A) is false but reason (R) is true.

Question 8

A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C. Assertion (A) is true but reason (R) is false.

D. Assertion (A) is false but reason (R) is true.

Solution

Question 9

A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C. Assertion (A) is true but reason (R) is false.

D. Assertion (A) is false but reason (R) is true.

Solution

Question 10

A. Both assertion (A) and reason (R) are true and reason (R) is the correct explanation of assertion (A).

B. Both assertion (A) and reason (R) are true but reason (R) is not the correct explanation of assertion (A).

C. Assertion (A) is true but reason (R) is false.

D. Assertion (A) is false but reason (R) is true.

Solution

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