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NEET • BIOLOGY • BIOTECHNOLOGY AND ITS APPLICATIONS

Biotechnology and its applications practice · Mixed difficulty

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Showing 151-180 of 204 questions
151 Medium
151 of 204
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.
152 Easy
152 of 204
Understanding +4 | -1
Genetic engineering has been successfully used for producing
View answer and explanation
Correct option: A
transgenic mice for testing the safety of polio vaccine before use in humans
Option A is correct because transgenic mice are used to test the safety of polio vaccines before human use, ensuring efficacy and safety.
153 Easy
153 of 204
Remembering +4 | -1
Transgenic animals exist for which of the following human diseases?
a. Alzheimer's b. Cancer c. Cystic fibrosis
Choose the option which includes all the correct ones
View answer and explanation
Correct option: C
a, b and c
Option C (a, b and c) is correct because transgenic animal models exist for Alzheimer's, Cancer and Cystic Fibrosis.
154 Easy
154 of 204
Remembering +4 | -1
Which of the following is/are true?
I. Biowar is the use of biological weapons against humans and/or their crops and animals.
II. Bioethics is the unauthorized use of bioresources and traditional knowledge related to bioresources for commercial benefits.
III. Biopatent is exploitation of bioresources of other nations without proper authorization.
View answer and explanation
Correct option: B
I only
Option B (I only) is correct because only the statement about biowar being the use of biological weapons is true. Bioethics and biopatent definitions are incorrect.
155 Hard
155 of 204
Understanding +4 | -1
Assertion (A): Traditional knowledge related to bio-resources can be exploited to develop modern applications.
Reason (R): Traditional knowledge related to bio resources can also be used to save time, effort and expenditure during their commercialisation.
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 traditional knowledge of bio-resources can indeed be used to develop modern applications, saving time and resources in commercialization.
156 Medium
156 of 204
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.
157 Easy
157 of 204
Understanding +4 | -1
Mature form of recombinant human insulin lacks
View answer and explanation
Correct option: D
C-peptide chain
Option D (C-peptide chain) is correct because the mature form of recombinant human insulin, produced through rDNA technology, lacks the C-peptide chain.
158 Medium
158 of 204
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.
159 Hard
159 of 204
Understanding +4 | -1
Assertion : FlavrSavr, a transgenic tomato
which remains fresh and retains their flavour
for long time.

Reason : Production of polygalacturonase
enzyme, which degrades pectin, is blocked in
FlavrSavr.
View answer and explanation
Correct option: A
If both Assertion and Reason are true and
Reason is the correct explanation of Assertion
Option A (If both Assertion and Reason are true and Reason is the correct explanation of Assertion) is correct because the FlavrSavr tomato's extended freshness is due to the blocked production of polygalacturonase, which degrades pectin.
160 Easy
160 of 204
Understanding +4 | -1
Main objective of production/use of herbicide resistant GM crops is to
View answer and explanation
Correct option: D
Reduce herbicide accumulation in food articles for health safety
Option D (Reduce herbicide accumulation in food articles for health safety) is the correct answer because the main objective is to minimize herbicide residues in food.
161 Medium
161 of 204
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).
162 Medium
162 of 204
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.
163 Medium
163 of 204
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.
164 Easy
164 of 204
Remembering +4 | -1
Mature insulin differs from pro-insulin because the former does not have
View answer and explanation
Correct option: C
C-chain
Option C (C-chain) is correct because mature insulin lacks the C-peptide, which is cleaved from pro-insulin during processing.
165 Medium
165 of 204
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.
166 Medium
166 of 204
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.
167 Medium
167 of 204
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.
168 Medium
168 of 204
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.
169 Hard
169 of 204
Remembering +4 | -1
The water soluble protein associated with silk thread is
View answer and explanation
Correct option: B
Sericin
Option B (Sericin) is correct because sericin is the water-soluble protein that coats silk fibers.
170 Medium
170 of 204
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.
171 Medium
171 of 204
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.
172 Easy
172 of 204
Understanding +4 | -1
Application of biotechnology include
I) Therapeutics
II) Diagnostics
III) GMO
IV) Processed food
View answer and explanation
Correct option: D
I, II, III, IV
Option D (I, II, III, IV) is correct because all listed options are applications of biotechnology.
173 Easy
173 of 204
Remembering +4 | -1
The pesticide most persistent in the soil is
View answer and explanation
Correct option: C
Dieldrin
Option C (Dieldrin) is correct because Dieldrin is known to be one of the most persistent pesticides in the soil due to its chemical stability and slow degradation.
174 Medium
174 of 204
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.
175 Easy
175 of 204
Analyzing +4 | -1
Assertion (A): Using Agrobacterium vectors, nematode-specific genes were introduced into the host plant.
Reason (R): A Solanaceae member Meloidegyne incognitia infects the roots of tobacco plants and causes a great reduction in yield.
View answer and explanation
Correct option: C
Assertion is true but reason is false
Option C is correct because the assertion is true, but the reason is false; Meloidegyne incognita does infect tobacco roots, but it's controlled using RNA interference, not Agrobacterium vectors directly introducing nematode-specific genes.
176 Medium
176 of 204
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.
177 Medium
177 of 204
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.
178 Medium
178 of 204
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.
179 Hard
179 of 204
Understanding +4 | -1
Find the CORRECT match from the following.
View answer and explanation
Correct option: B
RNAi - Meloidogyne incognitia
Option B (RNAi - Meloidogyne incognitia) is correct because RNA interference (RNAi) is used to protect plants from nematode infections like Meloidogyne incognitia.
180 Medium
180 of 204
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.
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