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Biotechnology And Its Applications

339 Questions Start Allen Test
All Exams Allen
Q276 Allen 4. NCERT BASED QUESTIONS MCQ
DNA cannot pass through cell membrane as it is
A.
hydrophilic
B.
hydrophobic
C.
lipophilic
D.
All the above
Q277 Allen 4. NCERT BASED QUESTIONS MCQ
Which type of bioreactor is usually cylindrical or with a curved base to facilitate the mixing of the contents?
A.
Sparged tank bioreactor
B.
Stirred tank bioreactor
C.
Both (1) and (2)
D.
None of the above
Q278 Allen 4. NCERT BASED QUESTIONS MCQ
In "PCR"-technology primer is a :-
A.
Small chemically synthesized oligonucleotide that are complementary to region of DNA
B.
Large chemically synthesized oligonucleotide that are identical to region of DNA
C.
Small segment of RNA
D.
None of these
Q279 Allen 4. NCERT BASED QUESTIONS MCQ
In gel electrophoresis the DNA fragment separate according to their size through sieving effect, which is provided by :-
A.
Agarose gel
B.
Nylone membrane
C.
Polyethylene glycol
D.
Ethidium Bromide
Q280 Allen 4. NCERT BASED QUESTIONS MCQ
Which of the following method of vectorless gene transfer is suitable for plants ?
A.
BioColumnics method
B.
Micro injection
C.
Liposome mediated
D.
Electroporation
Q281 Allen 4. NCERT BASED QUESTIONS MCQ
In gel electrophoresis, separated bands of DNA are cut out from the agarose gel and extracted from the gel pieces, This step is known as :-
A.
Blotting
B.
Elution
C.
Cloning
D.
Taggings
Q282 Allen 4. NCERT BASED QUESTIONS MCQ
Which enzyme is used in "PCR" technique ?
A.
Thermostable DNA polymerase
B.
Thermostable RNA polymerase
C.
Thermostable ligase
D.
Thermostable vector
Q283 Allen 4. NCERT BASED QUESTIONS MCQ
Which of the following is used to deliver desirable gene in to animal cell?
A.
Disarmed retrovirus
B.
Disarmed agrobacterium
C.
Disarmed E. coli
D.
Disarmed plant pathogen
Q284 Allen 4. NCERT BASED QUESTIONS MCQ
Agrobacterium tumifaciencs, a pathogen of several dicot plants is able to deliver a piece of DNA and it is known as :-
A.
R-DNA
B.
S-DNA
C.
M-DNA
D.
T-DNA
Q285 Allen 4. NCERT BASED QUESTIONS MCQ
A transgenic food crop, which may help in solving the problem of night blindness in developing countries is :-
A.
Bt soyabean
B.
Golden rice
C.
Flavr savr tomatoes
D.
Starlink maize
Q286 Allen 4. NCERT BASED QUESTIONS MCQ
Bacterium Bacillus thuringiensis is widely used in contemporary biology as
A.
Source of industrial enzyme
B.
Indicator of water pollution
C.
Insecticide
D.
Agent for production of dairy products.
Q287 Allen 4. NCERT BASED QUESTIONS MCQ
Bacillus thuringiensis is a :-
A.
Bacterium
B.
Protozoa
C.
Fungus
D.
Virus
Q288 Allen 4. NCERT BASED QUESTIONS MCQ
GEAC stands for :-
A.
Gene evaluation approval committee
B.
Genetic engineering approval committee
C.
Genetic engineering applied committee
D.
Gene enhancement approval committee
Q289 Allen 4. NCERT BASED QUESTIONS MCQ
Conventional methods to diagnose a disease are :-
A.
Serum and urine analysis
B.
""
C.
ELISA
D.
All of the above
Q290 Allen 4. NCERT BASED QUESTIONS MCQ
The first transgenic cow, which produced human protein enriched milk was named :-
A.
Andy
B.
Dolly
C.
Rosie
D.
Dumpy
Q291 Allen 4. NCERT BASED QUESTIONS MCQ
Milk of transgenic cow 'Rosie' contains a substance that was nutritionally more balanced product for human babies is :-
A.
$\alpha\text{-lactalbumin}$
B.
$\beta\text{-lactalbumin}$
C.
$\gamma\text{-lactalbumin}$
D.
$\delta\text{-lactalbumin}$
Q292 Allen 4. NCERT BASED QUESTIONS MCQ
Which peptide is not present in the mature insulin and is removed during maturation into insulin?
A.
A-peptide
B.
B-peptide
C.
C-peptide
D.
Both (1) and (2)
Q293 Allen 4. NCERT BASED QUESTIONS MCQ
Two polypeptide chains of insulin are linked together by :-
A.
disulphide bonds
B.
hydrogen bonds
C.
Phosphodiester bonds
D.
Glycosidic bonds
Q294 Allen 4. NCERT BASED QUESTIONS MCQ
'Flavr Savr' is a transgenic variety of :-
A.
Potato
B.
Tomato
C.
Soyabean
D.
Rice
Q295 Allen 4. NCERT BASED QUESTIONS MCQ
Golden rice is enriched in :-
A.
Vitamin C
B.
Vitamin D
C.
Vitamin A
D.
Vitamin E
Q296 Allen 4. NCERT BASED QUESTIONS MCQ
For the control of the cotton bollworms, which one of the genes is useful ?
A.
cry I Ac
B.
cry I Ab
C.
cry I Ad
D.
All of these
Q297 Allen 4. NCERT BASED QUESTIONS MCQ
Process involving silencing of a specific mRNA due to a complementary dsRNA molecule is called :-
A.
Transcription
B.
RNA interference
C.
DNA interference
D.
None of these
Q298 Allen 4. NCERT BASED QUESTIONS MCQ
Meloidegyne incognitia which infects the roots of tobacco plants causing a great reduction in yield is a :-
A.
Nematode
B.
Bacterium
C.
Virus
D.
Alga
Q299 Allen 4. NCERT BASED QUESTIONS MCQ
Toxin present in Bacillus thuringiensis does not kill the bacterium because it is inactive form what makes it active inside the insect?
A.
the alkaline pH of the gut, which solubilises the crystals
B.
the acid pH of the gut
C.
the neutral pH of the gut
D.
All of the above
Q300 Allen 4. NCERT BASED QUESTIONS MCQ
Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because :-
A.
bacteria are resistant to the toxin
B.
toxin is immature
C.
toxin is inactive
D.
bacteria enclose toxin in a special sac