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22 questions · timed · auto-graded

Question 11 Mark
Write the function of adenosine deaminase.
Answer
Adenosine deaminase is essential for the functioning of the immune system.
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Question 21 Mark
Define genetically modified organism (GMO).
Answer
Plants, bacteria, fungi and animals whose genes have been changed by manipulation are called genetically modified organisms.
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Question 41 Mark
How are infections caused by pathogens identified?
Answer
Infection caused by pathogens is identified on the basis of the presence of antigens (proteins, glycoproteins,etc.) or the detection of antibodies synthesized against the pathogens.
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Question 51 Mark
For the treatment of a child suffering from genetic disease. Name the appropriate medical system.
Answer
Gene therapy.
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Question 61 Mark
Write the name of the bacterial product modified by genetic engineering which is used in 'clot dissolution' i.e. removal of clot from the blood vessels of a patient undergoing myocardial infarction leading to heart attack.
Answer
Streptokinase.
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Question 71 Mark
What is biopiracy?
Answer
Using biological resources by multinational companies and other organizations without systematic approval and compensation payment from any nation or its people is called biopiracy.
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Question 81 Mark
What is gene therapy?
Answer
Gene therapy is the method by which people born with genetic diseases are treated.
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Question 91 Mark
When the symptoms of the disease are not clearly visible for molecular diagnosis, then how is it identified?
Answer
It is identified by amplification of their nucleic acid by PCR.
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Question 101 Mark
How many recombinant medical drugs have currently been approved for human use in the world and how many are being marketed in India?
Answer
At present about 30 recombinant medicines have been approved for human use in the world. Currently 12 of these are being marketed in India.
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Question 111 Mark
Write the full name of RNAi, what is it?
Answer
RNA interference is the full name, it is a method of cellular protection in all eukaryotes genes.
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Question 141 Mark
Write the names of pest crops prepared with the help of biotechnology.
Answer
Bt cotton, Bt maize, paddy, tomato and potato and soyabean.
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Question 151 Mark
What does the behavior of GMO depend on?
Answer
Their behavior depends on the nature of the transferred genes, the nature of the host plants, animals or bacteria and the food web.
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Question 161 Mark
What are those organisms called whose genes have been modified by manipulation?
Answer
Genetically modified organism (GMO).
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Question 171 Mark
Which three possibilities can be thought of for increasing food production?
Answer
(i) Agrochemical based agriculture, (ii) Organic agriculture and (iii) Genetically engineered crop based agriculture.
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Question 191 Mark
What is Totipotency?
Answer
The ability to generate a completely new plant from a cell is called totipotency.
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Question 211 Mark
What do you understand by somaclone?
Answer
Under tissue culture, all genetically identical plants produced from the explant obtained from one plant are called somaclones.
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Question 221 Mark
What is biotechnology being used for?
Answer
It is being used in medicine, diagnostics, genetically modified crops in agriculture, processed food, bioremediation, waste treatment and energy production.
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1 Marks Question - Biology STD 12 Science Questions - Vidyadip