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NEET • BIOLOGY • BIOTECHNOLOGY AND ITS APPLICATIONS

Biotechnology and its applications practice · Medium

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Showing 61-90 of 98 questions

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61 Medium
61 of 98
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.
62 Medium
62 of 98
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
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.
63 Medium
63 of 98
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.
64 Medium
64 of 98
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.
View answer and explanation
Correct option: A
If both Assertion and Reason are true and
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.
65 Medium
65 of 98
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
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.
66 Medium
66 of 98
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
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.
67 Medium
67 of 98
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.
68 Medium
68 of 98
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.
69 Medium
69 of 98
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?
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.
70 Medium
70 of 98
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).
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.
71 Medium
71 of 98
Remembering +4 | -1
In September 2001, which of the following was used as a bioweapon agent in America?
View answer and explanation
Correct option: B
Anthrax (Bacillus anathracis)
Option B (Anthrax (Bacillus anathracis)) is correct because Anthrax was indeed used as a bioweapon agent in America in September 2001.
72 Medium
72 of 98
Understanding +4 | -1
Golden rice
I. It is a transgenic variety of rice
II. It contains a goods quality of β\mathrm{\beta }-carotene (provitamin-A)
III. β\mathrm{\beta }-carotene is a principal source of vitamin-A
IV. The grains of the rice are yellow in colour due to β\mathrm{\beta }-carotene. The rice is commonly called golden rice
Which of the statements given above are correct?
View answer and explanation
Correct option: D
I, II, III and IV
Option D (I, II, III and IV) is correct because all statements are true about Golden Rice.
73 Medium
73 of 98
Remembering +4 | -1
Lymphocytes are
View answer and explanation
Correct option: A
A kind of white blood cells
Option A (A kind of white blood cells) is correct because lymphocytes are a type of white blood cell involved in the immune response.
74 Medium
74 of 98
Remembering +4 | -1
Gene therapy in humans was first practiced by Blease and Andresco to cure
View answer and explanation
Correct option: D
Severe Combined Immuno Deficiency Disease
Option D (Severe Combined Immuno Deficiency Disease) is correct because gene therapy in humans was first practiced by Blease and Andresco to cure Severe Combined Immuno Deficiency Disease (SCID).
75 Medium
75 of 98
Understanding +4 | -1
What might be an advantage of beginning gene therapy prior to birth?
View answer and explanation
Correct option: B
The body would not reject it as it has not yet recognised ‘self’
The correct answer is B (The body would not reject it as it has not yet recognised ‘self’) because the immune system is not fully developed before birth, reducing the risk of rejection of the introduced genes.
76 Medium
76 of 98
Remembering +4 | -1
Use of biological resources of other countries without any legal authorization of the countries concerned is called
View answer and explanation
Correct option: B
Biopiracy
Option B (Biopiracy) is correct because it refers to the unauthorized use of biological resources from other countries.
77 Medium
77 of 98
Understanding +4 | -1
Roise’ cow known to produce a type of milk which has all the following characteristics
I. protein content of 2.4 g/L
II. human α-lactalbumin
III. more nutritionally balanced for human babies than natural cow milk
Which of the above statements are correct?
View answer and explanation
Correct option: D
I, II and III
Option D is correct because Rosie's milk had a protein content of 2.4 g/L, contained human α-lactalbumin, and was more nutritionally balanced for human babies than natural cow milk.
78 Medium
78 of 98
Remembering +4 | -1
Number of recombinant therapeutics have been approved for human throughout the world is ____
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.
79 Medium
79 of 98
Understanding +4 | -1
Consider the following statements
I. Earlier, insulin was extracted from pancreas of slaughtered cattle and pigs which was more efficient than the genetically engineered insulin
II. PCR technique is being used for the detection of HIV in suspected AIDS patients and genetic mutations in suspected cancer patients
III. Cystic fibrosis, haemophilia, cancer, Parkinon’s etc., are treated by gene therapy
Which of the statements given above are correct?
View answer and explanation
Correct option: C
II and III
Option C (II and III) is correct because PCR is used for HIV and cancer detection, and gene therapy is explored for diseases like cystic fibrosis, but earlier insulin was less efficient.
80 Medium
80 of 98
Analyzing +4 | -1
Assertion (A): The insulin isolated from other animals just as effective as that secreted by the human body itself and it not elicit an immune response in the human body.
Reason (R): Insulin from an animal source, caused all patients to develop allergy or other types of reactions to the foreign protein.
View answer and explanation
Correct option: D
Both assertion and reason are false
Option D is correct because both the assertion and the reason are false regarding insulin isolated from other animals and immune responses.
81 Medium
81 of 98
Understanding +4 | -1
C – Peptide of human insulin is
View answer and explanation
Correct option: C
Removed during maturation of pro-insulin to insulin
Option C (Removed during maturation of pro-insulin to insulin) is correct because the C-peptide is cleaved from pro-insulin during its maturation into active insulin.
82 Medium
82 of 98
Understanding +4 | -1
What is the demerit of using bovine insulin (from cow) and porcine insulin (from pig) in diabetic patients?
View answer and explanation
Correct option: C
It may cause allergic reactions
Option C (It may cause allergic reactions) is correct because bovine and porcine insulin are slightly different from human insulin and can trigger allergic reactions in some patients.
83 Medium
83 of 98
Analyzing +4 | -1
Read the following statements

A. Bt toxins are insect group specific.

B. They are endotoxins.

C. The toxins encoded by gene cry I Ab controls cotton bollworm.

D. The toxins encoded by genes cry I Ac and cry II Ab controls corn borer.

E. The Bt toxins bind with midgut epithelium and damages it by creating pores

Choose the option, which includes all incorrect statements.
View answer and explanation
Correct option: B
C and D only
Option B (C and D only) is correct because statements C and D contain incorrect information about the specific cry genes and the pests they control.
84 Medium
84 of 98
Understanding +4 | -1
Which technique accurately detect pathological and physiological changes in the living tissue
View answer and explanation
Correct option: C
MRI
Option C (MRI) is correct because MRI provides detailed images of soft tissues and can detect subtle changes in living tissue.
85 Medium
85 of 98
Understanding +4 | -1
Which of the following statements are false?
I. Insulin for curing diabetes, used to be extracted from the pancreas of slaughtered pig and cattle
II. Animal insulin is slighty different from the human insulin
III. Animal insulin causes some undesirable side effects such as allergy
IV. Bacteria cannot be made to synthesise insulin from its gene because of the presence of introns
Choose the correct option
View answer and explanation
Correct option: D
None of these
Option D (None of these) is correct because all the statements are true. Therefore, none of them are false.
86 Medium
86 of 98
Remembering +4 | -1
Select the correct pair representing the diagnostic test for AIDSAIDS and its treatment
View answer and explanation
Correct option: A
ELISAELISA/Anti-retroviral drugs
Option A (ELISAELISA/Anti-retroviral drugs) is correct because ELISA is a diagnostic test for AIDS, and anti-retroviral drugs are used for its treatment.
87 Medium
87 of 98
Understanding +4 | -1
In 1983, Eli Lilly an American company, first prepared two DNA sequences corresponding to A and B-chains of the human insulin and introduced them in the plasmids of EscherchiacoliEscherchia\mathrm{ }coli to produce insulin chains. Chains A and B were prepared separately, extracted and combined by creating
View answer and explanation
Correct option: B
Disulphide bond
Option B (Disulphide bond) is correct because the A and B chains of insulin are linked together by disulphide bonds.
88 Medium
88 of 98
Analyzing +4 | -1
Assertion (A) Agrobacterium tumefaciens is popular in genetic engineering because this bacterium is associated with the stems of all cereal and pulse crops.

Reason (R) Using Agrobacterium as vector, the genes can be transferred in biotechnological techniques.
View answer and explanation
Correct option: D
If A is false, but R is true
Option D is correct because the Assertion is false, as Agrobacterium tumefaciens is not associated with all cereal and pulse crops, but the Reason is true, as Agrobacterium is indeed used as a vector in genetic engineering.
89 Medium
89 of 98
Remembering +4 | -1
According to NCERT text which Indian plants have either been patented or attempts have been made to patent them by Western nations for their commercial use?
I. Basmati rice II. Neem
III. Turmic IV. Tulsi
View answer and explanation
Correct option: C
I, II and III
Option C (I, II and III) is correct because Basmati rice, Neem, and Turmeric are Indian plants that have been patented or attempts have been made to patent them by Western nations.
90 Medium
90 of 98
Remembering +4 | -1
Which type of vector is used to introduce a functional ADA cDNA into lymphocytes, in gene therapy for ADA deficiency?
View answer and explanation
Correct option: D
Retrovirus
Option D (Retrovirus) is correct because retroviruses are commonly used as vectors to introduce functional genes into cells in gene therapy, including ADA cDNA into lymphocytes.
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