Explore topic-wise MCQs in Testing Subject.

This section includes 657 Mcqs, each offering curated multiple-choice questions to sharpen your Testing Subject knowledge and support exam preparation. Choose a topic below to get started.

1.

Which one contains four pyrimidine bases?

A. GATCAATGC
B. GCUAGACAA
C. UAGCGGUAA
D. TGCCTAACG
Answer» B. GCUAGACAA
2.

Which of the following tool makes possible genetic engineering? 

A. Restriction endonuclease
B. DNA polymerase
C. Helicase
D. RNA polymerase
Answer» B. DNA polymerase
3.

Which of the following is used in Biowar?

A. A pathogen
B. Toxin from a pathogen
C. A delivery system for the bioweapon agent
D. All of these
Answer» E.
4.

Which of the following is related to genetic engineering?

A. Mitochondrion
B. Golgi apparatus
C. Lysosome
D. Plasmid
Answer» E.
5.

Which of the following is a genetic vector?

A. Plasmid
B. Phage
C. Cosmid
D. All of these
Answer» E.
6.

Which of the following features should be present in vector?

A. It should replicate autonomously
B. It should have its own origin of replication
C. It should possess restriction enzyme cleavage sites
D. All of these
Answer» E.
7.

Which of the following enzyme joints the okazaki fragments?

A. DNA polymerase
B. DNA ligase
C. Helicase
D. Restriction endonuclease
Answer» C. Helicase
8.

Which is related to genetic engineering?

A. Plastid
B. Plasmid
C. Heterosis
D. Mutation
Answer» C. Heterosis
9.

Which enzyme is useful in genetic engineering?

A. DNAase
B. Amylase
C. Lipase
D. Restriction endonuclease
Answer» E.
10.

Cry genes or Bt genes are obtained from

A. Cotton pest
B. Tobacco plant
C. Bacillus thuringiensis
D. E - Coli
Answer» D. E - Coli
11.

Transgenic plants are developed by

A. Introducing foreign genes
B. Introducing gene mutations
C. Deleting certain chromosomes parts
D. Stopping spindle formation
Answer» B. Introducing gene mutations
12.

There is a restriction endonuclease called EcoRI. What does "co" part in it stand for?

A. coli
B. colon
C. coelom
D. coenzyme
Answer» B. colon
13.

The two strands of DNA are held together by bonds of

A. Nitrogen
B. Oxygen
C. Hydrogen
D. Carbon
Answer» D. Carbon
14.

The transgenic animals are those which have

A. foreign DNA in some of their cells
B. foreign DNA in all of their cells
C. foreign RNA in all of their cells
D. Both (A) and (C)
Answer» C. foreign RNA in all of their cells
15.

The term gene was coined by

A. Mc Clintock
B. Morgan
C. Johannsen
D. De Duve
Answer» C. Johannsen
16.

The specific triplet of nitrogen bases on the transfer RNA is called

A. Codon
B. Anticodon
C. Genetic code
D. none of the above
Answer» C. Genetic code
17.

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

A. Insects
B. Nematodes
C. Fungi
D. Viruses
Answer» C. Fungi
18.

The plant 'Brassica napus' has been modified to produce ______.

A. Vitamin A
B. hirudin
C. lysine rich seeds
D. insulin
Answer» C. lysine rich seeds
19.

The nitrogen base which is absent in RNA is

A. Adenine
B. Cytosine
C. Guanine
D. Thymine
Answer» E.
20.

The most common substrate used in distilleries for the production of ethanol is

A. Molasses
B. Corn meal
C. Soya meal
D. Ground gram
Answer» B. Corn meal
21.

The first transgenic crop was

A. Pea
B. Tobacco
C. Flax
D. Cotton
Answer» C. Flax
22.

The first hormone artificially produced by bacteria is

A. insulin
B. thyroxin
C. adrenalin
D. testosterone
Answer» B. thyroxin
23.

The enzymes required to obtain wall-free / naked protoplasts are

A. Cellulase and proteinase
B. Cellulase and pectinase
C. Cellulase and amylase
D. Amylase and pectinase
Answer» C. Cellulase and amylase
24.

Structure involved in genetic engineering is

A. Plasmid
B. Codon
C. Plastid
D. Scissors
Answer» B. Codon
25.

Somatic hybridization is achieved through

A. Grafting
B. Protoplast fusion
C. Conjugation
D. Recombinant DNA technology
Answer» C. Conjugation
26.

Restriction endonucleases are used in genetic engineering, because

A. they can degrade harmful proteins
B. they can join DNA fragments
C. they can cut DNA at specific base sequences
D. they can cut DNA at variable sites
Answer» D. they can cut DNA at variable sites
27.

Restriction endonucleases are used in genetic engineering and they

A. cut DNA at various sites
B. join DNA segments
C. cut RNA at specific sites
D. cut DNA at specific sites
Answer» E.
28.

Polyethylene glycol is

A. Fusogenic chemical
B. Electro fusion stimulant
C. Callus stimulant
D. Differentiation stimulant
Answer» B. Electro fusion stimulant
29.

Plant tissue culture technique is a redefined method of ________

A. Hybridization
B. Vegetative propagation
C. Asexual reproduction
D. selection
Answer» C. Asexual reproduction
30.

One of the following processes involves southern blotting technique

A. rDNA technology
B. DNA finger printing
C. production of transgenic plants
D. formation of suspension culture
Answer» C. production of transgenic plants
31.

Maximum number of existing transgenic animals is of

A. Pig
B. Fish
C. Mice
D. Cow
Answer» D. Cow
32.

Given below is a sample of a portion of DNA strand giving the base sequence on the opposite strands. What is so special shown in it? 5' ______ GAATTC ________ 3' 3' ________CTTAAG ________ 5'

A. Palindromic sequence of base pairs
B. Replication completed
C. Deletion mutation
D. Start codon at the 5 end
Answer» B. Replication completed
33.

Genomics is the study of

A. Genes in general
B. Human genes
C. Genomes in general
D. Human genome
Answer» D. Human genome
34.

Genetic Engineering is

A. plastic surgery
B. addition or removal of genes
C. study of extranuclear genes
D. all of the above
Answer» C. study of extranuclear genes
35.

First artificial gene was synthesized by

A. Nirenberg
B. Mendel
C. Morgan
D. Khorana
Answer» E.
36.

Embryo culture is used for

A. Establishing suspension culture
B. Recovery of inter specific hybrids
C. Somatic hybridization
D. Haploid production
Answer» D. Haploid production
37.

Dolly, The first cloned mammal, was produced by

A. Parthenogenesis
B. Artificial fertilization
C. Replacement of zygote nucleus by somatic nucleus
D. in vitro fertilization
Answer» D. in vitro fertilization
38.

DNA is found in

A. Chromosomes
B. Plastids
C. Mitochondria
D. All of the above
Answer» E.
39.

DNA fingerprinting was discovered by

A. James Watson
B. Alec Jeffreys
C. Frederick Fanger
D. Hargobind Khorana
Answer» C. Frederick Fanger
40.

Which purine is found in RNA?

A. Guanine
B. Cytosine
C. Thymine
D. Uracil
Answer» B. Cytosine
41.

Continuous addition of sugars in 'fed batch' fermentation is done to

A. Degrade sewage
B. Produce methane
C. Obtain antibiotics
D. Purify enzymes
Answer» E.
42.

Agarose extracted from sea weeds finds use in

A. Gel electrophoresis
B. Spectrophotometry
C. Tissue culture
D. PCR
Answer» B. Spectrophotometry
43.

Advancement in genetic engineering has been possible due to the discovery of

A. Oncogenes
B. Transposons
C. Restriction endonuclease
D. Exonucleases
Answer» D. Exonucleases
44.

A dividing and undifferentiated mass of cells is called

A. Callus
B. Embryo
C. Explant
D. Zygote
Answer» B. Embryo