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Biotechnology and its Applications MCQs
Class XII Biology
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NCERT Based
•
NEET Practice
📘 Concept Based
📝 Exam Level
🤖 AI Explanations
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494 questions in this chapter
Question 121 of 494
📘 CLASS XII
The proteins encoded by the genes cryIAc and cryIIAb control the cotton ________.
The proteins encoded by the genes cryIAc and cryIIAb control the cotton bollworms.
Question 122 of 494
📘 CLASS XII
The Bt toxin gene designated cryIAb controls the ________.
The gene cryIAb controls corn borer.
Question 123 of 494
📘 CLASS XII
The nematode ________ infects the roots of tobacco plants and causes a great reduction in yield.
The nematode Meloidegyne incognitia infects the roots of tobacco plants.
Question 124 of 494
📘 CLASS XII
A novel strategy to prevent nematode infestation was based on the process of RNA ________ (RNAi).
The strategy adopted against the nematode was based on RNA interference (RNAi).
Question 125 of 494
📘 CLASS XII
RNAi involves silencing a specific mRNA due to a complementary ________ molecule that binds to and prevents translation.
RNAi involves silencing a specific mRNA due to a complementary dsRNA (double-stranded RNA) molecule.
Question 126 of 494
📘 CLASS XII
RNA interference (RNAi) takes place as a method of cellular defense in all ________ organisms.
RNAi takes place in all eukaryotic organisms.
Question 127 of 494
📘 CLASS XII
Nematode-specific genes were introduced into the host plant using ________ vectors to generate dsRNA.
Nematode-specific genes were introduced using Agrobacterium vectors.
Question 128 of 494
📘 CLASS XII
Recombinant therapeutics do not induce unwanted ________ responses, unlike products isolated from non-human sources.
Recombinant therapeutics do not induce unwanted immunological responses.
Question 129 of 494
📘 CLASS XII
At present, about ________ recombinant therapeutics have been approved for human use worldwide.
About 30 recombinant therapeutics have been approved worldwide.
Question 130 of 494
📘 CLASS XII
In India, ________ recombinant therapeutics are presently being marketed.
12 recombinant therapeutics are presently being marketed in India.
