NEET > Biotechnology Priciples and Applications

Explore popular questions from Biotechnology Priciples and Applications for NEET. This collection covers Biotechnology Priciples and Applications previous year NEET questions hand picked by popular teachers.


Q 1.    

Correct4

Incorrect-1

Which kind of therapy was given in 1990 to a four-year-old girl with adenosine deaminase (ADA ) deficiency?

Gene therapy

B

Chemotherapy

C

Immunotherapy

D

Radiation therapy

Explanation


Q 2.    

Correct4

Incorrect-1

The two polypeptides of human insulin are linked together by

A

covalent bond

disulphide bridges

C

hydrogen bonds

D

phosphodiester bond.

Explanation


Q 3.    

Correct4

Incorrect-1

Which part of the tobacco plant is infected by {tex}Meloidogyne \ incognita{/tex}?

A

Stem

Root

C

Flower

D

Leaf

Explanation


Q 4.    

Correct4

Incorrect-1

Golden rice is a genetically modified crop plant where the incorporated gene is meant for biosynthesis of

A

omega 3

vitamin A

C

vitamin B

D

vitamin C

Explanation


Q 5.    

Correct4

Incorrect-1

The introduction of T-DNA into plants involves

A

exposing the plants to cold for a brief period

B

allowing the plant roots to stand in water

infection of the plant by {tex}Agrobacterium \ tumefaciens{/tex}

D

altering the pH of the soil, then heat-shocking the plants.

Explanation


Q 6.    

Correct4

Incorrect-1

In Bt cotton, the Bt toxin present in plant tissue as protoxin is converted into active toxin due to

A

action of gut microorganisms

B

presence of conversion factors in insect gut

alkaline pH of the insect gut

D

acidic pH of the insect gut.

Explanation



Q 7.    

Correct4

Incorrect-1

Which body of the Government of India regulates GM research and safety of introducing GM organisms for public services{tex}?{/tex}

Genetic Engineering Approval Committee

B

Research Committee on Genetic Manipulation

C

Bio-safety committee

D

Indian Council of Agricultural Research

Explanation


Q 8.    

Correct4

Incorrect-1

The crops engineered for glyphosate are resistant/tolerant to

A

insects

herbicides

C

fungi

D

bacteria.

Explanation


Q 9.    

Correct4

Incorrect-1

The first human hormone produced by recombinant DNA technology is

insulin

B

estrogen

C

thyroxin

D

progesterone.

Explanation


Q 10.    

Correct4

Incorrect-1

Which of the following Bt crops is being grown in India by the farmers{tex}?{/tex}

A

Brinjal

B

Soybean

C

Maize

Cotton

Explanation


Q 11.    

Correct4

Incorrect-1

RNA interference involves

A

synthesis of cDNA and RNA using reverse transcriptase

silencing of specific {tex} m{/tex}RNA due to complementary RNA

C

interference of RNA in synthesis of DNA

D

synthesis of {tex}m{/tex}RNA from DNA.

Explanation



Q 12.    

Correct4

Incorrect-1

Which one of the following vectors is used to replace the defective gene in gene therapy{tex}?{/tex}

Adenovirus

B

Cosmid

C

Ri plasmid

D

Ti plasmid

Explanation


Q 13.    

Correct4

Incorrect-1

Consumption of which one of the following foods can prevent the kind of blindness associated with vitamin 'A' deficiency{tex}?{/tex}

A

'Flavr Savr' tomato

B

Canolla

Golden rice

D

Bt-Brinjal

Explanation


Q 14.    

Correct4

Incorrect-1

Tobacco plants resistant to a nematode have been developed by the introduction of DNA that produces (in the host cells)

both sense and anti-sense RNA

B

a particular hormone

C

an antifeedant

D

a toxic protein.

Explanation


Q 15.    

Correct4

Incorrect-1

What is it that forms the basis of DNA fingerprinting{tex}?{/tex}

A

The relative proportions of purines and pyrimidines in DNA.

B

The relative difference in the DNA occurrence in blood, skin and saliva.

C

The relative amount of DNA in the ridges and grooves of the fingerprints.

Satellite DNA occurring as highly repeated short DNA segments.

Explanation



Q 16.    

Correct4

Incorrect-1

The first clinical gene therapy was given for treating

A

diabetes mellitus

B

chicken pox

C

rheumatoid arthritis

adenosine deaminase deficiency.

Explanation


Q 17.    

Correct4

Incorrect-1

Maximum number of existing transgenic animals is of

A

fish

mice

C

cow

D

pig.

Explanation

Q 18.    

Correct4

Incorrect-1

The process of RNA interference (RNAi) has been used in the development of plants resistant to

nematodes

B

fungi

C

viruses

D

insects.

Explanation


Q 19.    

Correct4

Incorrect-1

Bacillus thuringiensis forms protein crystals which contain insectidical protein. This protein

binds with epithelial cells of midgut of the insect pest ultimately killing it.

B

is coded by several genes including the gene {tex}cry{/tex}.

C

is activated by acid pH of the foregut of the insect pest.

D

does not kill the carrier bacterium which is itself resistant to this toxin.

Explanation



Q 20.    

Correct4

Incorrect-1

Silencing of {tex} m {/tex}RNA has been used in producing transgenic plants resistant to

A

bollworms

nematodes

C

white rusts

D

bacterial blights.

Explanation

Q 21.    

Correct4

Incorrect-1

Read the following four statements (A-D) about certain mistakes in two of them.
(A) The first transgenic buffalo, Rosie produced milk which was human alphalactalbumin enriched.
(B) Restriction enzymes are used in isolationof DNA from other macromolecules.
(C) Downstream processing is one of the steps of rDNA technology.
(D) Disarmed pathogen vectors are also used in transfer of rDNA into the host.
Which of the two statements have mistakes?

A

B and C

B

C and D

C

A and C

A and B

Explanation


Q 22.    

Correct4

Incorrect-1

The genetically-modified (GM) brinjal in India has been developed for

insect-resistance

B

enhancing shelf life

C

enhancing mineral content

D

drought-resistance.

Explanation


Q 23.    

Correct4

Incorrect-1

Genetic engineering has been successfully used for producing

transgenic mice for testing safety of polio vaccine before use in humans

B

transgenic models for studying new treatments for certain cardiac diseases

C

transgenic cow-Rosie which produces high fat milk for making ghee

D

animals like bulls for farm work as they have super power.

Explanation



Q 24.    

Correct4

Incorrect-1

Some of the characteristics of Bt cotton are

A

long fibre and resistance to aphids

B

medium yield, long fibre and resistance to beetle pests

C

high yield and production of toxic protein crystals which kill dipteran pests

high yield and resistance to bollworms.

Explanation


Q 25.    

Correct4

Incorrect-1

An improved variety of transgenic basmati rice

A

does not require chemical fertilizers and growth hormones

gives high yield and is rich in vitamin {tex} \mathrm { A } {/tex}

C

is completely resistant to all insect pests and diseases of paddy

D

gives high yield but has no characteristic aroma.

Explanation