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Biotechnology and its Applications MCQs
Class XII Biology
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NCERT Based
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NEET Practice
📘 Concept Based
📝 Exam Level
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494 questions in this chapter
Question 131 of 494
📘 CLASS XII
Insulin used for diabetes was earlier extracted from the pancreas of slaughtered cattle and ________.
Insulin was earlier extracted from pancreas of slaughtered cattle and pigs.
Question 132 of 494
📘 CLASS XII
Mature insulin consists of two short polypeptide chains, chain A and chain B, that are linked together by ________ bridges.
Chains A and B of insulin are linked by disulphide bridges.
Question 133 of 494
📘 CLASS XII
Insulin in mammals is synthesised as a ________, which is processed before it becomes fully mature and functional.
Insulin is synthesized as a pro-hormone.
Question 134 of 494
📘 CLASS XII
The pro-hormone insulin contains an extra stretch called the ________ which is removed during maturation.
The pro-hormone contains an extra stretch called the C peptide.
Question 135 of 494
📘 CLASS XII
In 1983, the American company ________ prepared two DNA sequences corresponding to the A and B chains of human insulin.
Eli Lilly, an American company, prepared the A and B chain sequences in 1983.
Question 136 of 494
📘 CLASS XII
Eli Lilly introduced the DNA sequences for insulin chains A and B into plasmids of ________ to produce the chains separately.
The DNA sequences were introduced into plasmids of E. coli.
Question 137 of 494
📘 CLASS XII
Gene therapy is a collection of methods that allows correction of a gene defect diagnosed in a child or ________.
Gene therapy allows correction of a gene defect diagnosed in a child/embryo.
Question 138 of 494
📘 CLASS XII
The first clinical gene therapy was given in ________ to a 4-year old girl.
The first clinical gene therapy was given in 1990.
Question 139 of 494
📘 CLASS XII
The first clinical gene therapy treated the deficiency of the enzyme ________ (ADA).
The first gene therapy was for Adenosine Deaminase (ADA) deficiency.
Question 140 of 494
📘 CLASS XII
The enzyme ADA is crucial for the ________ system to function.
ADA enzyme is crucial for the immune system.
