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NEET • BIOLOGY • BIOTECHNOLOGY AND ITS APPLICATIONS
Biotechnology and its applications practice · Medium
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Understanding
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Multicellular organisms that carries a specific genetic change in each cell because of an intervention at the fertilized egg stage is a
View answer and explanation
Correct option: C
Transgenic
Option C is correct because a transgenic organism carries a specific genetic change in each cell due to intervention at the fertilized egg stage.
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Remembering
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The process of RNA interference has been used to make tobacco plant resistant to
View answer and explanation
Correct option: B
Meloidogyne incognita
Option B is correct because RNA interference has been used to make tobacco plants resistant to Meloidogyne incognita, a nematode.
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Remembering
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Plants, bacteria, fungi and animals whose genes have been altered by manipulation are called
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Correct option: A
Genetically modified organisms
Option A (Genetically modified organisms) is correct because organisms with altered genes through manipulation are called GMOs.
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The SCID patient has a defective gene for the enzyme Adenosine Deaminase (ADA). He/She lacks functional …… and therefore, fails to fight the infecting pathogens
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Correct option: C
T-lymphocytes
The correct answer is C (T-lymphocytes) because ADA deficiency primarily affects T-lymphocytes, which are crucial for cell-mediated immunity and fighting infections.
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The site of the production of ADA in the body is
View answer and explanation
Correct option: B
Lymphocytes
Option B (Lymphocytes) is correct because ADA (Adenosine Deaminase) is primarily produced in lymphocytes.
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Biopiracy is
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Correct option: C
The use of bioresources of a country without proper authorisation
Option C (The use of bioresources of a country without proper authorisation) is correct because it accurately defines biopiracy.
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Understanding
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The most likely reason for the development of resistance against pesticides in insect damaging a crop is
View answer and explanation
Correct option: C
Directed mutations
The correct answer is A (Random mutations) because resistance to pesticides arises from random mutations in insects that happen to confer resistance, which are then selected for by the pesticide application.
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Tobacco plant resistant to a nematode have been developed by the introduction of DNA that produces (in the host cells)
View answer and explanation
Correct option: B
Both sense and antisense RNA
Option B is correct because the nematode-resistant tobacco plant produces both sense and antisense RNA to silence specific nematode genes.
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Remembering
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Number of recombinant therapeutics presently being marketed in India are.
View answer and explanation
Correct option: B
12
Option B (12) is correct because there are approximately 12 recombinant therapeutics currently marketed in India.
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Remembering
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Father of green revolution in India is
View answer and explanation
Correct option: A
M S Swaminathan
Option A (M S Swaminathan) is correct because M.S. Swaminathan is widely regarded as the father of the Green Revolution in India for his role in introducing high-yielding varieties of wheat and rice.
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Understanding
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Producing a giant mouse in the laboratory was possible through
View answer and explanation
Correct option: A
Gene manipulation
Option A is correct because gene manipulation, such as inserting a growth hormone gene, can lead to the production of a giant mouse in the laboratory.
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Understanding
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A single stranded DNA (or) RNA, tagged with a radio active molecule (probe) is allowed to hybridize to its. Complementary DNA in a clone of cells followed by detection using
View answer and explanation
Correct option: B
Autoradio graphy
Option B (Autoradio graphy) is correct because autoradiography is used to detect the radioactive probe hybridized to its complementary DNA.
13
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Remembering
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First transgenic cow produced milk enriched with
View answer and explanation
Correct option: B
2.4 gm human alpha – lactalbumin per L
Option B (2.4 gm human alpha – lactalbumin per L) is correct because the first transgenic cow produced milk enriched with 2.4 gm human alpha – lactalbumin per liter.
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Analyzing
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Assertion (A): Going beyond the morality of human activities, the biological significance is important.
Reason (R): Genetic modification of organisms can have unpredictable results when they are introduced into the ecosystem.
Reason (R): Genetic modification of organisms can have unpredictable results when they are introduced into the ecosystem.
View answer and explanation
Correct option: A
Both assertion and reason are true and reason is the correct explanation of assertion
Option A is correct because both the assertion and reason are true, and the reason correctly explains why biological significance is important beyond morality.
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Assertion (A): Transgenic animals are made that carry genes which make them more sensitive to toxic substances than non-transgenic animals.
Reason (R): Toxicity testing in non transgenic animals will allow us to obtain results in less time.
Reason (R): Toxicity testing in non transgenic animals will allow us to obtain results in less time.
View answer and explanation
Correct option: C
Assertion is true but reason is false
Option C is correct because while the assertion is true (transgenic animals can be more sensitive), the reason is false (toxicity testing in non-transgenic animals does not necessarily take less time).
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Choose the correct option about agrochemicals
View answer and explanation
Correct option: D
All of the above
Option D (All of the above) is correct because agrochemicals are expensive, harmful to the environment, and genetically modified crops can be a less expensive alternative.
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Study the following statements regarding Bt toxins produced by bacterium Bacillus thuringiens is and select the correct one
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Correct option: D
All of the above
Option D (All of the above) is correct because all statements accurately describe Bt toxins.
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Application
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A doctor, while operating on an HIV+ patient accidently cut himself with a scalpel. He comes to you, suspecting himself to have contacted the virus. Which test will you advise him to rule out/confirm his suspicion?
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Correct option: A
PCR
Option A (PCR) is correct because PCR (Polymerase Chain Reaction) is the most sensitive and rapid test to detect the presence of HIV genetic material soon after exposure.
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Remembering
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Select the molecular diagnostic tool which is used for the detection of mutations in genes in suspected cancer patients.
View answer and explanation
Correct option: C
PCR
Option C (PCR) is correct because PCR is a molecular diagnostic tool used for detecting mutations in genes, which is crucial in diagnosing cancer.
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Which one of the following is correct?
View answer and explanation
Correct option: C
Both (a) and (b)
Option C (Both (a) and (b)) is correct because herbicides and insecticides act through the mechanisms described.
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Remembering
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An efficient oil eating ‘Super bug’ developed through genetic engineering used in cleaning of oil-spill polluted sites is a species of
View answer and explanation
Correct option: C
Pseudomonas
Option C (Pseudomonas) is correct because certain species of Pseudomonas have been genetically engineered to efficiently degrade oil, making them useful for cleaning oil spills.
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Understanding
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Which step was proved to be the main challenge in the production of human insulin by recombinant DNA technology?
View answer and explanation
Correct option: C
Getting insulin assembled into mature form
The correct answer is C (Getting insulin assembled into mature form) because the main challenge was correctly folding and assembling the A and B chains of insulin into the functional, mature form with the correct disulfide bonds.
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Remembering
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Which of the following can be biotechnological products?
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Correct option: D
All of these
Antibiotics, vaccines, and enzymes can all be produced using biotechnological methods, making Option D (All of these) the correct answer.
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A bt prototoxin is
View answer and explanation
Correct option: B
Inactive toxin
Option B (Inactive toxin) is correct because Bt protoxin is the inactive form of the toxin produced by Bacillus thuringiensis.
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Remembering
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The vector used to transfer a gene to produce pest-resistant tobacco plant is
View answer and explanation
Correct option: C
Modified Ti plasmid
Option C (Modified Ti plasmid) is correct because the Ti plasmid from Agrobacterium tumefaciens is commonly modified and used as a vector to transfer genes into plants, including those for pest resistance.
26
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Genetically engineered bacteria have been successfully used in the commercial production of
View answer and explanation
Correct option: A
Human insulin
Option A (Human insulin) is correct because genetically engineered bacteria are used to produce human insulin commercially.
27
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Remembering
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Biocontrol agent Bacillus thuringiensis (Bt) is used to control
View answer and explanation
Correct option: A
Butterfly caterpillars
Option A (Butterfly caterpillars) is correct because Bacillus thuringiensis (Bt) produces toxins that are specifically effective against lepidopteran larvae, which include butterfly caterpillars.
28
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Remembering
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Golden rice is
View answer and explanation
Correct option: B
A transgenic rice having gene for -carotene (pro-vitamin-A)
Option B (A transgenic rice having gene for -carotene (pro-vitamin-A)) is correct because golden rice is genetically engineered to produce beta-carotene, a precursor to vitamin A.
29
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The crops engineered for glyphosate are resistant/tolerant to
View answer and explanation
Correct option: B
Herbicides
Option B (Herbicides) is correct because crops engineered for glyphosate resistance are designed to tolerate glyphosate-based herbicides, allowing farmers to control weeds without harming the crop.
30
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Remembering
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Treatment of a genetic disorder by manipulating genes is called
View answer and explanation
Correct option: A
Gene therapy
Option A (Gene therapy) is correct because gene therapy involves manipulating genes to treat genetic disorders.
Revision notes and key takeaways
Review BIOTECHNOLOGY AND ITS APPLICATIONS in your textbook or class notes, then use this set to check your understanding.
Key Takeaways
- ✓ This set contains 98 single-correct-answer MCQs on BIOTECHNOLOGY AND ITS APPLICATIONS.
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Showing 1-30 of 98 questions