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MCQs

Total Questions : 238 | Page 8 of 24 pages
Question 71. Some types of variation are due to changes in the genetic material. What is this type of change called?
  1.    Fertilisation
  2.    Mutation
  3.    Radiation
  4.    Sterilisation
 Discuss Question
Answer: Option B. -> Mutation
Answer: (b).Mutation
Question 72. Which of the following is the process of choosing parent organisms for the characteristics that is wanted in their offspring?
  1.    Active selection
  2.    Reproductive selection
  3.    Selective breeding
  4.    Breeding selection
 Discuss Question
Answer: Option C. -> Selective breeding
Answer: (c).Selective breeding
Question 73. Which protein has been produced generating a transgenic sheep that is used for replacement therapy for individuals at risk from emphysema?
  1.    Plasminogen activator (tPA)
  2.    α-anti trypsin (AAT)
  3.    Casein
  4.    Amyloid precursor proteins
 Discuss Question
Answer: Option B. -> α-anti trypsin (AAT)
Answer: (b).α-anti trypsin (AAT)
Question 74. DNA into fish is injected into
  1.    pronuclei
  2.    cytoplasm
  3.    both (a) and (b)
  4.    none of these
 Discuss Question
Answer: Option B. -> cytoplasm
Answer: (b).cytoplasm
Question 75. Which of the following is the word used to describe what happens when the nucleus of a sperm joins with the nucleus of an egg cell?
  1.    Sex
  2.    Fertilisation
  3.    Intercourse
  4.    Reproduction
 Discuss Question
Answer: Option B. -> Fertilisation
Answer: (b).Fertilisation
Question 76. Which of these carries the thousands of genes needed to allow animal and plant cells to pass on inherited characteristics?
  1.    Chromosomes
  2.    Chromatogram
  3.    Chromatography
  4.    Chromium
 Discuss Question
Answer: Option A. -> Chromosomes
Answer: (a).Chromosomes
Question 77. Fusion of karyoplast with the enucleated cell is achieved in presence of
  1.    cytochalasin B
  2.    polyethylene glycol
  3.    both (a) and (b)
  4.    alcohol
 Discuss Question
Answer: Option B. -> polyethylene glycol
Answer: (b).polyethylene glycol
Question 78. When a fertilized egg cell develops into an embryo, the entropy of the living system
  1.    decreases
  2.    increases
  3.    remains constant
  4.    none of these
 Discuss Question
Answer: Option A. -> decreases
Answer: (a).decreases
Question 79. Animal pharming can be defined as
  1.    growing animals for farming
  2.    programming animals to produce novel products
  3.    generating transgenic animals for farming
  4.    none of the above
 Discuss Question
Answer: Option B. -> programming animals to produce novel products
Answer: (b).programming animals to produce novel products
Question 80. For the transfer of whole individual chromosomes, they are isolated from the cells at
  1.    prophase
  2.    metaphase
  3.    telophase
  4.    anaphase
 Discuss Question
Answer: Option B. -> metaphase
Answer: (b).metaphase

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