Online Biotechnology Test - Biotechnology Test 7

Instruction:

  • This is a FREE online test. Beware of scammers who ask for money to attend this test.
  • Total number of questions: 20.
  • Time allotted: 30 minutes.
  • Each question carries 1 mark; there are no negative marks.
  • DO NOT refresh the page.
  • All the best!

Marks : 2/20


Total number of questions
20
Number of answered questions
0
Number of unanswered questions
20
Test Review : View answers and explanation for this test.

1.
Charon vectors are different from EMBL vectors because
they have more extensive range of restriction targets with in their polylinkers.
physical separation of lambda arm from central fragment is required
both (a) and (b)
physical separation of lambda arm from central fragment is not required
Your Answer: Option
(Not Answered)
Correct Answer: Option

2.
Charon 34 and Charon 35 can clone DNA upto
1-2 kb
6-7 kb
9-20 kb
30-35 kb
Your Answer: Option
(Not Answered)
Correct Answer: Option

3.
What single feature is probably most responsible for the success of angiosperms?
Seeds
Fruit
Broad leaves
Flowers
Your Answer: Option
(Not Answered)
Correct Answer: Option

4.
A widely accepted explanation for transport of sugar in phloem is called
root pressure theory
transpiration
pressure flow hypothesis
cytoplasmic streaming
Your Answer: Option
(Not Answered)
Correct Answer: Option

5.
Which of the following is true about Agrobacterium tumefaciens?
It causes crown gall disease of plants
It infects gymosperms
It infects dicotyledonous angiosperms
All of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option

6.
In a plant tumour cell
complete Ti plasmid is incorporated in plant nuclear DNA
different parts of the Ti-plasmid are incorporated
only a small specific segment of callus T DNA is incorporated
may vary from plant to plant
Your Answer: Option
(Not Answered)
Correct Answer: Option

7.
In transgenic plants of Arabidipsis thaliana which of the following gene is transferred for the synthesis of PHB (polyhdroxybutyrate)?
Acetyl Co A reductase
Polyhydroxybutyrate synthease
Both (a) and (b)
Pyrophosphorylase
Your Answer: Option
(Not Answered)
Correct Answer: Option

8.
Involvement of sugarcane phytoalexins in red-hot resistance has been observed. The phytoalexin compound is reported to be
3-deoxyanthocyanidin
luteolinidin
apigeninidin
5-0 apigeninidin
Your Answer: Option
(Not Answered)
Correct Answer: Option

9.
Raphanobrassica is a classical example of
aneuploidy
nullisomy
allopolyploidy
None of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option

10.
Each chromosome contains two chromatids by the end of the __________ phase in the life cycle of a human cell.
C
G2
M
S
Your Answer: Option
(Not Answered)
Correct Answer: Option

11.
At low glucose concentration, below 0.25 mmol/litre, large portions of glucose and glutamine is shunted via
oxidative pathway
anaerobic pathway
both (a) and (b)
none of these
Your Answer: Option
(Not Answered)
Correct Answer: Option

12.
Higher dissolved oxygen concentration in the culture media are toxic and lead to
DNA degradation
lipid peroxidation
metabolism of nutrients in culture media at a rate greater than that required for consumption
all of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option

13.
The technique of organ culture may be divided on the basis of employing
solid medium
liquid medium
both (a) and (b)
semi-solid medium
Your Answer: Option
(Not Answered)
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14.
Which one of the following is true about Yeast Centromeric plasmids (YCp) vectors?
Contains centromeric sequences
Segregates during meiosis and mitosis
Functions as true chromosome
All of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option

15.
Which of these carries the thousands of genes needed to allow animal and plant cells to pass on inherited characteristics?
Chromosomes
Chromatogram
Chromatography
Chromium
Your Answer: Option
(Not Answered)
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16.
Small simple molecules are
poor antigens
rich antigens
moderate antigens
heterophilic antigens
Your Answer: Option
(Not Answered)
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17.
A cytokine that stimulates the activity of B and T cells is
lymphotoxin
interlukin-2
interlukin-1
all of these
Your Answer: Option
(Not Answered)
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18.
Which of the following is correct?
rabbits do not make myelomas whereas mice are unable to synthesize antibodies
rabbits do not make myelomas whereas mice are able to synthesize antibodies
rabbits make myelomas whereas mice are unable to synthesize antibodies
rabbits make myelomas whereas mice are able to synthesize antibodies
Your Answer: Option
(Not Answered)
Correct Answer: Option

19.
How is air supply to the fermentor sterilized?
By heat filtration
Filtration through fibrous material
Filtration through granular material
All of the above
Your Answer: Option
(Not Answered)
Correct Answer: Option

20.
What are the fermentation conditions for the ethanol production?
pH 6; temperature 35°C
pH 5; temperature 35°C
pH 6; temperature 30°C
pH 5; temperature 30°C
Your Answer: Option
(Not Answered)
Correct Answer: Option

*** END OF THE TEST ***
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