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Which of the following statements are co...

Which of the following statements are correct regarding the process of RNA interference ?
(i) This is used to prevent the infestation of protozoans
(ii) It takes place in some eukaryotic and all prokaryotic organism as a method of cellular defense
(iii) The method involves silencing of a specific mRNA due to a complementary dsRNA molecule
(v)It is a novel strategy to produce pest-resistant plants.

A

If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion

B

It both Assertion & Reason are True but Reason is not a correct explanation of the Assetion

C

If Assertion is True but the Reason is False

D

If both Assertion & Reason are false

Text Solution

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The correct Answer is:
C
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Which of the following methods involves silencing of a specific mRNA due to a complementary dsRNA molecule that binds to and prevents translation of the mRNA (silencing)

A : RNAi takes place in all eukaryotic organisms as a method of cellular defense. R : Complementary dsRNA molecule binds to specific mRNA and prevents its translation (silencing).

Select the correct options to fill up the blanks. (i) _____ enzyme is crucial for the immune system to function and its absence is caused by the deletion of a gene (ii) Insulin consists of _____ and _____ that are linked together by _____ (iii) Transgenic mice are being used to test the safety of the ____ (iv) _____ involves silencing of a specific mRNA due to a complementary dsRNA molecule that binds to and prevents translation of the mRNA

Identify the correct sequence of steps in RNA-interference (RNAi) process to develop nematode resistant plants (i) Silencing of specific mRNA of the nematode (ii) Formation of sense and antisense RNA (iii) dsRNA formation (iv) Introducing nematode specific genes into plant

Read the following statements and select the correct ones. (i) Vaccine is a preparation (or suspension ) of a dead/attenuated pathogen of a disease which on inoculation ( or injection ) into a healthy person, provides temporary/permanent active immunity by inducing antibodies formation. (ii) Immunisation is the process by which the body produces antibodies against the vaccine preventable diseases through administration of specific vaccines. (iii) The principle of immunisation or vaccination is based on the property of 'memory' of the immune system. iv) If a person is infected with some deadly microbes to which quick immune response is required; in that case, we need to directly inject the performed antibodies or antitoxins e.g., in case of tetanus.

Study the following statements regarding recombinant DNA technology and select the incorrect ones. (i) Taq polymerase extends the primers using the nucleotides provided in the reaction. (ii) Antibiotic resistance genes are considered as desirable genes in recombinant DNA technology. (iii) DNA fragments are separated according to their charge only, in agarose gel electrophoresis. (iv) Transformation is a procedure through which a piece of DNA is integrated in to the genome of a host bacterium. (v) To produce higher yields of a desired protein, host cells can be multiplied in a continuous culture. (vi) Downstream processing is one of the steps of polymerase chain reaction.

Find out which among the following is true and which is false (i) Recombinant DNA technology has made it possible to engineer microbes, plants and animals such that they have novel capabilities. (ii) Genetically modified organisms have been created by using methods other than natural methods to transfer one or more genes from organism to another, generally using techniques such as recombinant DNA technology. (iii) GM plants have been useful in increasing crop yields, reduce post harvest losses and make crops more tolerant of stressess. (iv) Recombinant DNA technology process have made immense impact in the area of healthcare by enabling mass production of safe and more effective therapeutics. (v) since the recombinant therapeutics are identical to human proteins, they do not induced unwanted immunological responses.

ALLEN-BIOTECHNOLOGY AND MICROBES IN HUMAN WELFARE-Exercise IV
  1. Assertion: The activated toxin binds to the surfacce of midgut epithel...

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  2. Assertion: The choice of cry-gene depends upon the crop & the targeted...

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  3. Which of the following statements are correct regarding the process of...

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  4. Assertion: The nematode parasite could not survive in a transgenic pla...

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  5. Assertion: The recombinant therapeutics do not induce unwanted immunol...

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  6. Assertion: The proinsulin contains an extra stretch called as C-peptid...

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  7. Assertion: The main challenge for production of insulin using r-DNA te...

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  8. In 1983, Eli lilly, an American company prepared two DNA sequences cor...

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  9. Assertion: Gene therapy is a collection of methods that allows correct...

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  10. Assertion: ADA deficiency can not be cured permanently by gene therapy...

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  11. Assertion: In gene therapy of SCID, a patient requires periodic infusi...

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  12. Assertion: For effective treatement of a disease, early dignosis & und...

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  13. Assertion: ELISA is based on the principle of antigen antibody interac...

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  14. Assertion: PCR is a powerful technique to identify many genetic disord...

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  15. Assertion: A ds DNA, tagged with a radioactive molecule (probe) is use...

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  16. Assertion: Transgenic animals are those animals whose DNA is mainpulat...

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  17. How are the transgenic animals advantageous to us?

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  18. Assertion: The milk of 1^(st) transgenic cow, 'Rosie' is far better th...

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  19. Which of the following transgenic animals are being used to test the s...

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  20. Assertion: Transgenic animals are now used in toxicity testing of vari...

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