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494 questions in this collection · Page 9 of 50
Question 81 of 494
📘 CLASS XII
Biotechnology And Its Applications
Which organization in India is responsible for making decisions about the validity and safety of introducing GM-organisms for public services?
The Indian Government has set up organizations such as GEAC (Genetic Engineering Approval Committee), which makes decisions regarding the validity of GM research and the safety of introducing GM-organisms for public services.
Question 82 of 494
📘 CLASS XII
Biotechnology And Its Applications
The Green Revolution succeeded in tripling the food supply, primarily due to improved crop varieties, better management practices, and the use of:
Increased yields during the Green Revolution were mainly due to the use of better management practices and the use of agrochemicals (fertilisers and pesticides).
Question 83 of 494
📘 CLASS XII
Biotechnology And Its Applications
Which of the following is an ethical concern regarding genetic modification of organisms that might occur when such organisms are introduced into the ecosystem?
Genetic modification of organisms can have unpredictable results when such organisms are introduced into the ecosystem, which is a major ethical and biological concern.
Question 84 of 494
📘 CLASS XII
Biotechnology And Its Applications
Why did the American company’s patent on Basmati rice in 1997 cause controversy?
An American company obtained patent rights on Basmati rice in 1997, claiming a "new" variety that had actually been derived from Indian farmer’s varieties (by crossing them with semi-dwarf varieties).
Question 85 of 494
📘 CLASS XII
Biotechnology And Its Applications
How do industrialized nations generally compare to developing/underdeveloped nations in terms of bio-resources?
Most of the industrialised nations are rich financially but poor in biodiversity and traditional knowledge. In contrast, the developing and underdeveloped world is rich in biodiversity and traditional knowledge related to bio-resources.
Question 86 of 494
📘 CLASS XII
Biotechnology And Its Applications
The first clinical gene therapy was given to a 4-year-old girl in what year?
The first clinical gene therapy was given in 1990 to a 4-year old girl with adenosine deaminase (ADA) deficiency.
Question 87 of 494
📘 CLASS XII
Biotechnology And Its Applications
What type of vector was used to introduce the functional ADA cDNA into the patient's lymphocytes during the first step of gene therapy for ADA deficiency?
As a first step towards gene therapy for ADA deficiency, a functional ADA cDNA (using a retroviral vector) is introduced into lymphocytes grown outside the body.
Question 88 of 494
📘 CLASS XII
Biotechnology And Its Applications
Which type of organisms is PCR (Polymerase Chain Reaction) routinely used to detect when their concentration is very low and symptoms are not yet visible?
Very low concentrations of a bacteria or virus (at a time when the symptoms of the disease are not yet visible) can be detected by amplification of their nucleic acid by PCR.
Question 89 of 494
📘 CLASS XII
Biotechnology And Its Applications
In molecular diagnosis using a radioactive probe and autoradiography, what is the consequence if the target gene is mutated?
If the gene is mutated, the probe will not have complementarity, and consequently, the clone having the mutated gene will not appear on the photographic film after autoradiography.
Question 90 of 494
📘 CLASS XII
Biotechnology And Its Applications
What is the primary reason recombinant therapeutics are safer than similar products isolated from non-human sources?
The recombinant therapeutics do not induce unwanted immunological responses as is common in case of similar products isolated from non-human sources, and are also free from the risk of infection.