Questions and answers for exam Preparation

MCQs

Total Questions : 222 | Page 3 of 23 pages

Question 21. Resistance to glyphosphate in transgenic petunia plants has been developed by the transfer of

gene for EPSPS(5-enol-pyruvyl shikimat 3 phosphate synthase)
gene for ALS (acetolactate synthase)
gene for GS (glutamine synthase)
any of the above

Discuss Question

Answer: Option A. -> gene for EPSPS(5-enol-pyruvyl shikimat 3 phosphate synthase)
Answer: (a).gene for EPSPS(5-enol-pyruvyl shikimat 3 phosphate synthase)

Question 22. Which of the following compounds has been produced in transgenic plants to improve tolerance to salt stress and water deficit?

Sucrose
Mannitol
Nicotine
Octopine

Discuss Question

Answer: Option B. -> Mannitol
Answer: (b).Mannitol

Question 23. Given the DNA sequence ATTAAGGC, which sequence would be used by researchers as an antisense molecule?

AUUAAGGC
UAAUUCCG
CGGAATTA
TAATTCCG

Discuss Question

Answer: Option A. -> AUUAAGGC
Answer: (a).AUUAAGGC

Question 24. Tomatoes exhibiting delayed ripening express antisense RNA against

glycerol 1 phosphate acyl transferase
polygalactouranase
ACC deaminase
sucrose phosphate synthase gene

Discuss Question

Answer: Option C. -> ACC deaminase
Answer: (c).ACC deaminase

Question 25. Expression of antisense RNA in transgenic plants is a general method used to

activate the expression of all genes in a biochemical pathway
eliminate the expression of all genes in a biochemical pathway
block the expression of virus coat protein genes
reduce or eliminate the expression of individual genes

Discuss Question

Answer: Option D. -> reduce or eliminate the expression of individual genes
Answer: (d).reduce or eliminate the expression of individual genes

Question 26. Which of the following genes can be used for making resistances against viral infection?

Genes for capsid protein
Gene for nucleocapsid protein
Satellite RNA
All of these

Discuss Question

Answer: Option D. -> All of these
Answer: (d).All of these

Question 27. Bruise resistant tomatoes have been developed by the expression of antisense RNA against

glycerol 1 phosphate acyl transferase
polygalactouranase
ACC deaminase
Sucrose phosphate synthase gene

Discuss Question

Answer: Option B. -> polygalactouranase
Answer: (b).polygalactouranase

Question 28. Which of the following has been widely used to provide resistance against plant viruses?

Virus resistance genes from bacteria
Expression of virus coat protein genes in transgenic plants
Expression of anti-virus genes in vectors that transmit viruses
Expression of ribonuclease (RNase) genes in host plants

Discuss Question

Answer: Option B. -> Expression of virus coat protein genes in transgenic plants
Answer: (b).Expression of virus coat protein genes in transgenic plants

Question 29. Cross protection against viruses in transgenic plants can be obtained by

inoculating the susceptible strain of a crop with a mild strain of a virus that helps in developing resistance against more virulent strain
inoculating the susceptible strain with the coat proteins of virulent strain
inoculating the susceptible strain with genes of nucleocapsid
any of the above

Discuss Question

Answer: Option A. -> inoculating the susceptible strain of a crop with a mild strain of a virus that helps in developing resistance against more virulent strain
Answer: (a).inoculating the susceptible strain of a crop with a mild strain of a virus that helps in developing resistance against more virulent strain

Question 30. Which cell-based technology endows a cell with increased ability to harness energy?