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MCQs

Total Questions : 58 | Page 3 of 6 pages
Question 21. Which of the following adaptations would it be desirable for a farmer to breed into a crop of wheat?
  1.    Resistance to disease
  2.    Resistance to pests
  3.    All of these
  4.    Early ripening
 Discuss Question
Answer: Option C. -> All of these
Question 22. Hypoxanthine can be measured by
  1.    amorphous silicon ISFET
  2.    alcohol sensor
  3.    urea sensor
  4.    hypoxanthine sensor
 Discuss Question
Answer: Option D. -> hypoxanthine sensor
Question 23. Biochips are made up of
  1.    any of the above
  2.    semi-conducting molecules inserted into the protein frame work
  3.    conducting molecules inserted into the protein frame work
  4.    non-conducting molecules inserted into the protein frame work
 Discuss Question
Answer: Option B. -> semi-conducting molecules inserted into the protein frame work
Question 24. What is the size (in kb) of the tobacco chloroplast genome?
  1.    155 kilobase
  2.    375 kilobase
  3.    55 kilobase
  4.    325 kilobase
 Discuss Question
Answer: Option A. -> 155 kilobase
Question 25. To qualify as a micro array the analytical device must be
  1.    microscopic
  2.    planer and specific
  3.    ordered
  4.    all of these
 Discuss Question
Answer: Option D. -> all of these
Question 26. Microbiosensors are based on
  1.    ions effect
  2.    magnetic effect
  3.    piezoelectric effect
  4.    ionsensitive field effect transistor
 Discuss Question
Answer: Option D. -> ionsensitive field effect transistor
Question 27. Gene banks conserve stocks of
  1.    vegetative material only
  2.    seed and vegetative material both
  3.    none of these
  4.    seed only
 Discuss Question
Answer: Option B. -> seed and vegetative material both
Question 28. Microarrays are also known as
  1.    gene chips
  2.    all of these
  3.    biochips
  4.    DNA chips
 Discuss Question
Answer: Option B. -> all of these
Question 29. Pollination is the process by which plants transfer male sex cells from one plant to another. How does the nucleus of the male cell reach the female cell?
  1.    The pollen grain grows a pollen tube and the nucleus travels down the pollen tube to reach the egg cell
  2.    It blows in the wind
  3.    None of these
  4.    It travels on the legs of bees and sticks to the egg cell
 Discuss Question
Answer: Option A. -> The pollen grain grows a pollen tube and the nucleus travels down the pollen tube to reach the egg cell
Question 30. Which of the following is correct about micro biosensors?
  1.    All of these
  2.    Can be integrated on one chip and are useful for measuring various substrates in a small amount of sample solution simultaneously
  3.    It is possible to develop disposable transducers for biosensors through mass production
  4.    Implantation in human body and are suitable for in-vivo measurements
 Discuss Question
Answer: Option A. -> All of these

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