Class XII · Biology practice
Biotechnology and its Applications MCQs
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494 questions in this collection · Page 18 of 50
Question 171 of 494
📘 CLASS XII
Biotechnology And Its Applications
Recombinant human insulin is made in bacteria, yet its structure is absolutely ________ to that of the natural molecule.
Recombinant human insulin is absolutely identical to the natural molecule.
Question 172 of 494
📘 CLASS XII
Biotechnology And Its Applications
Gene therapy involves the insertion of genes into an individual’s cells and tissues to treat diseases, especially ________ diseases.
Gene therapy treats hereditary diseases.
Question 173 of 494
📘 CLASS XII
Biotechnology And Its Applications
Gene targeting in gene therapy replaces a defective mutant allele with a functional one or involves gene ________.
Gene therapy involves replacing a defective allele or gene targeting, which involves gene amplification.
Question 174 of 494
📘 CLASS XII
Biotechnology And Its Applications
Pest resistant plants created using Bt toxin genes reduce the reliance on chemical ________.
Bt toxin genes provide resistance to insects without the need for insecticides (pesticides).
Question 175 of 494
📘 CLASS XII
Biotechnology And Its Applications
Genetic modification has increased the efficiency of ________ usage by plants, preventing early exhaustion of soil fertility.
GM plants have increased efficiency of mineral usage.
Question 176 of 494
📘 CLASS XII
Biotechnology And Its Applications
Bt strains produce proteins that kill certain insects, including ________ (tobacco budworm, armyworm).
Lepidopterans (tobacco budworm, armyworm) are killed by Bt proteins.
Question 177 of 494
📘 CLASS XII
Biotechnology And Its Applications
Bt strains produce proteins that kill certain insects, including ________ (flies, mosquitoes).
Dipterans (flies, mosquitoes) are killed by Bt proteins.
Question 178 of 494
📘 CLASS XII
Biotechnology And Its Applications
Further increases in yield with existing crop varieties are not possible using ________ breeding techniques.
Further yield increases are not possible using conventional breeding.
Question 179 of 494
📘 CLASS XII
Biotechnology And Its Applications
Tissue culture was developed because traditional breeding techniques failed to keep pace with ________.
Traditional breeding failed to keep pace with demand.
Question 180 of 494
📘 CLASS XII
Biotechnology And Its Applications
The nutrient medium for explants must provide growth regulators like auxins and ________.
Growth regulators like auxins and cytokinins must be provided in the medium.
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