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NEET • BIOLOGY • BIOTECHNOLOGY AND ITS APPLICATIONS
Biotechnology and its applications practice · Mixed difficulty
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121
Hard
121 of 204
Understanding
+4 | -1
Assertion: Animal antibodies produced in plants
are plantibodies.
Reason: Plantibodies are just a theoretical
concept.
are plantibodies.
Reason: Plantibodies are just a theoretical
concept.
View answer and explanation
Correct option: C
If Assertion is true but Reason is false
Option C (If Assertion is true but Reason is false) is correct because plantibodies are indeed animal antibodies produced in plants, but they are not just a theoretical concept; they are actively researched and produced.
122
Medium
122 of 204
Remembering
+4 | -1
Which one of the following gene is defective in patients suffering from Severe Combined Immunodeficiency Disease (SCID)?
View answer and explanation
Correct option: A
Adenosine deaminase
Option A (Adenosine deaminase) is correct because patients suffering from Severe Combined Immunodeficiency Disease (SCID) often have a defective Adenosine deaminase (ADA) gene.
123
Hard
123 of 204
Understanding
+4 | -1
Early diagnosis diseases can be conducted by?
View answer and explanation
Correct option: D
All
Option D (All) is correct because ELISA, PCR, and rDNA technology can all be used for early disease diagnosis.
124
Easy
124 of 204
Remembering
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When a person with defective Adenosine Deaminase (ADA) was treated, which of the following steps were performing for gene therapy?
I. Lymphocytes were extracted from the bone marrow of the patient
II. Lymphocytes were grown in a culture out side the body
III. Lymphocytes were transfected with the normal ADA genes
IV. The transfected cells were returned to the patients
I. Lymphocytes were extracted from the bone marrow of the patient
II. Lymphocytes were grown in a culture out side the body
III. Lymphocytes were transfected with the normal ADA genes
IV. The transfected cells were returned to the patients
View answer and explanation
Correct option: D
I, II, III and IV
Option D (I, II, III and IV) is correct because all the listed steps are performed in gene therapy for a person with defective Adenosine Deaminase (ADA).
125
Easy
125 of 204
Remembering
+4 | -1
Desired improved varieties of economically useful crops are raised by
View answer and explanation
Correct option: C
Hybridization
Option C (Hybridization) is correct because hybridization involves crossing different varieties to combine desirable traits, leading to improved crop varieties.
126
Easy
126 of 204
Understanding
+4 | -1
During the processing of the proinsulin into insulin
View answer and explanation
Correct option: B
C – peptide is removed from proinsulin
Option B is correct because the C-peptide is removed during the processing of proinsulin to form functional insulin.
127
Easy
127 of 204
Understanding
+4 | -1
Which of the following does not come under the biological products of transgenic animals?
View answer and explanation
Correct option: D
Production of milk rich in casein
Option D is correct because producing milk rich in casein is a natural function of cows and not a specific biological product achieved through transgenic animal technology.
128
Easy
128 of 204
Remembering
+4 | -1
Human insulin is being commercially produced from a transgenic species of
View answer and explanation
Correct option: A
Escherichia
Option A (Escherichia) is correct because human insulin is commercially produced in transgenic Escherichia coli bacteria.
129
Easy
129 of 204
Remembering
+4 | -1
Which kind of therapy was given in 1990 to a four-year-old girl with adenosine deaminase (ADA) deficiency?
View answer and explanation
Correct option: B
Gene therapy
Option B (Gene therapy) is correct because in 1990, a four-year-old girl with adenosine deaminase (ADA) deficiency was treated with gene therapy.
130
Easy
130 of 204
Understanding
+4 | -1
Which of the following statements is not correct ?
View answer and explanation
Correct option: C
The functional insulin has A and B chains linked together by hydrogen bonds.
Option C is the correct answer because functional insulin has A and B chains linked by disulfide bridges, not hydrogen bonds.
131
Medium
131 of 204
Remembering
+4 | -1
Which body of the Govt of India regulates GM research and safety of introducing GM organisms for public services?
View answer and explanation
Correct option: A
GEAC
Option A (GEAC) is the correct answer because GEAC (Genetic Engineering Appraisal Committee) is the body in India that regulates GM research and the safety of introducing GM organisms.
132
Medium
132 of 204
Understanding
+4 | -1
Which of the following techniques are related with gene therapy?
I. Bone marrow transplantation
II. Enzyme replacement therapy
III. Gel electrophoresis technique
IV. Hybridoma technique
Choose the correct option
I. Bone marrow transplantation
II. Enzyme replacement therapy
III. Gel electrophoresis technique
IV. Hybridoma technique
Choose the correct option
View answer and explanation
Correct option: A
I and II
The correct answer is A (I and II) because both bone marrow transplantation and enzyme replacement therapy are techniques used in the context of gene therapy, particularly for treating conditions like SCID.
133
Medium
133 of 204
Understanding
+4 | -1
Select the mismatched pair
View answer and explanation
Correct option: D
Tobacco mosaic virus – Biocontrol agent
Option D (Tobacco mosaic virus – Biocontrol agent) is correct because TMV is a plant pathogen, not a biocontrol agent.
134
Medium
134 of 204
Analyzing
+4 | -1
Assertion: In developing world, Green
revolution was comparatively less effective
where farmers were dependent on conventional
breeding.
Reason: In developing world, inability to buy
expensive agro-chemicals forced farmers to rely
on conventional breeding.
revolution was comparatively less effective
where farmers were dependent on conventional
breeding.
Reason: In developing world, inability to buy
expensive agro-chemicals forced farmers to rely
on conventional breeding.
View answer and explanation
Correct option: A
If both Assertion and Reason are true and
Reason is the correct explanation of Assertion
Reason is the correct explanation of Assertion
Option A is correct because both the assertion and the reason are true, and the reason correctly explains why the Green Revolution was less effective in developing countries reliant on conventional breeding.
135
Medium
135 of 204
Remembering
+4 | -1
Today, transgenic models have been developed for many human diseases, which includes
I. rheumatoid arthritis II. Alzheimer’s disease
III. cancer IV. Cystic fibrosis
Choose the correct option
I. rheumatoid arthritis II. Alzheimer’s disease
III. cancer IV. Cystic fibrosis
Choose the correct option
View answer and explanation
Correct option: D
I, II, III and IV
Option D (I, II, III and IV) is correct because transgenic models have been developed for all the listed diseases: rheumatoid arthritis, Alzheimer’s disease, cancer, and cystic fibrosis.
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136
Medium
136 of 204
Understanding
+4 | -1
Which of the following techniques serves the purpose of early diagnosis of AIDS, cancer, etc?
I. Polymerase chain reaction
II. Recombinant DNA technology
III. Enzyme linked immune-sorbant assay
Choose the correct option
I. Polymerase chain reaction
II. Recombinant DNA technology
III. Enzyme linked immune-sorbant assay
Choose the correct option
View answer and explanation
Correct option: D
I, II and III
Option D (I, II and III) is correct because PCR, Recombinant DNA technology, and ELISA can all be used for early disease diagnosis.
137
Easy
137 of 204
Remembering
+4 | -1
How many recombinant therapeutics worldwide have been approved for human use?
View answer and explanation
Correct option: C
30
Option C (30) is correct because approximately 30 recombinant therapeutics have been approved for human use worldwide.
138
Medium
138 of 204
Remembering
+4 | -1
Antibiotics are used to treat diseases like
View answer and explanation
Correct option: D
All of the above
Option D (All of the above) is correct because antibiotics are effective against bacterial infections like Diphtheria, whooping cough, Plaque, and Leprosy.
139
Medium
139 of 204
Understanding
+4 | -1
Genetic engineering is related with
View answer and explanation
Correct option: B
Euphenics
Option B (Euphenics) is correct because genetic engineering aims to improve the phenotype of an organism by manipulating its genes, which aligns with the concept of euphenics.
140
Hard
140 of 204
Remembering
+4 | -1
Today, transgenic models exist for many human diseases which includes
(i) Cancer , (ii) Cystic fibrosis, (iii) Rheumatoid arthritis , (iv) Alzhiemer’s disease
(i) Cancer , (ii) Cystic fibrosis, (iii) Rheumatoid arthritis , (iv) Alzhiemer’s disease
View answer and explanation
Correct option: D
all of these
Option D (all of these) is correct because transgenic models exist for Cancer, Cystic fibrosis, Rheumatoid arthritis, and Alzheimer’s disease.
141
Easy
141 of 204
Understanding
+4 | -1
Assertion: ADA complementary DNA is inserted in the lymphocytes to treat SCID.
Reason: The patient requires periodic infusion of such genetically engineered lymphocytes.
Reason: The patient requires periodic infusion of such genetically engineered lymphocytes.
View answer and explanation
Correct option: B
Both assertion and reason are true but reason is not the correct explanation of assertion
The correct answer is B (Both assertion and reason are true but reason is not the correct explanation of assertion) because while both statements are true, the reason doesn't directly explain why the assertion is true. The need for periodic infusions is due to the limited lifespan of the genetically engineered lymphocytes.
142
Easy
142 of 204
Understanding
+4 | -1
What is true about Bt toxin?
View answer and explanation
Correct option: A
The inactive protoxin gets converted into active form in the insect gut
Option A (The inactive protoxin gets converted into active form in the insect gut) is correct because the Bt toxin is produced as an inactive protoxin that needs to be activated in the insect gut.
143
Easy
143 of 204
Remembering
+4 | -1
Pest resistant Bt cotton crop has been developed by transferring a gene from
View answer and explanation
Correct option: C
Bacillus thuringiens is
Option C (Bacillus thuringiensis) is correct because the Bt cotton crop is developed by transferring a gene from this bacterium.
144
Hard
144 of 204
Understanding
+4 | -1
One of the most important reasons why wild plants should thrive is that they are good sources of
View answer and explanation
Correct option: C
Genes for resistance to disease and pests
Option C (Genes for resistance to disease and pests) is correct because wild plants are a valuable source of genetic diversity for crop improvement, particularly for resistance traits.
145
Easy
145 of 204
Remembering
+4 | -1
About …A… recombinant therapeutics have been approved for human use the world over. In India, …B… of these are presently being marketed Here A and B can be
View answer and explanation
Correct option: B
A-30, B-12
Option A-30, B-12 is correct because approximately 30 recombinant therapeutics have been approved globally, with about 12 being marketed in India.
146
Medium
146 of 204
Understanding
+4 | -1
Which of the following is/are correct about Adenosine Deaminase (ADA) deficiency?
I. In the absence of adenosine deaminase enzyme, purine metabolism is disturbed and T-lymphocytes fails to function
II. ADA deficiency is caused by the deletion of the gene for ADA
III. In some cases, it can be cured by bone marrow transplantation and enzyme replacement therapy. But in both approaches, the patients are not completely cured
IV. For permanent cure, genes isolated from the bone marrow cells producing ADA at early embryonic stages can be a possible cure
Which of the above statements are correct?
I. In the absence of adenosine deaminase enzyme, purine metabolism is disturbed and T-lymphocytes fails to function
II. ADA deficiency is caused by the deletion of the gene for ADA
III. In some cases, it can be cured by bone marrow transplantation and enzyme replacement therapy. But in both approaches, the patients are not completely cured
IV. For permanent cure, genes isolated from the bone marrow cells producing ADA at early embryonic stages can be a possible cure
Which of the above statements are correct?
View answer and explanation
Correct option: D
I, II, III and IV
The correct answer is D (I, II, III and IV) because all the statements accurately describe aspects of Adenosine Deaminase (ADA) deficiency, its causes, and potential treatments.
147
Hard
147 of 204
Analyzing
+4 | -1
Assertion: Bacillus anthracis exemplifies how biotechnology can be used for destructive processes.
Reason: Anthrax bacterium spores were spread via letters in the form of powder.
Reason: Anthrax bacterium spores were spread via letters in the form of powder.
View answer and explanation
Correct option: B
If both Assertion and Reason are true but Reason is not the correct explanation of Assertion
Option B is correct because both the assertion and reason are true, but the reason doesn't directly explain how biotechnology is used destructively. The anthrax attack is an example of bioterrorism, but not necessarily a direct application of biotechnology for destructive purposes.
148
Easy
148 of 204
Remembering
+4 | -1
The milk of Rosie cow contained human specific protein known as:-
View answer and explanation
Correct option: A
Alpha lactalbumin
Option A (Alpha lactalbumin) is correct because the milk of Rosie the cow contained human alpha-lactalbumin.
149
Medium
149 of 204
Analyzing
+4 | -1
Assertion: By insertion of gene encoding
complementary RNA only the RNAi can be
introduced in an organism.
Reason: In vitro there are no methods by which
synthesised complementary RNA can be
inserted in an organism to induce RNAi (RNA
interference).
complementary RNA only the RNAi can be
introduced in an organism.
Reason: In vitro there are no methods by which
synthesised complementary RNA can be
inserted in an organism to induce RNAi (RNA
interference).
View answer and explanation
Correct option: D
If both Assertion and Reason are false
Option D is correct because both the Assertion and Reason are false. RNAi can be introduced by various methods, not just through the insertion of a gene encoding complementary RNA, and synthesized complementary RNA can be introduced in vitro.
150
Easy
150 of 204
Understanding
+4 | -1
Which has the ability to transform normal cells into recombinant cells?
View answer and explanation
Correct option: A
Ti plasmid
Option A (Ti plasmid) is correct because Ti plasmid from Agrobacterium tumefaciens has the natural ability to transfer genes into plant cells.
Revision notes and key takeaways
Review BIOTECHNOLOGY AND ITS APPLICATIONS in your textbook or class notes, then use this set to check your understanding.
Showing 121-150 of 204 questions