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| # | Question | Subject and topic | Difficulty |
|---|---|---|---|
| 1661 | Taq polymerase is preferred in PCR mainly because it | Biology/Biological Studies/Biotechnology/Biochemistry Processes of recombinant DNA technology |
Easy |
| 1662 | Starting from a single double-stranded DNA molecule, how many copies of the target sequence can ideally be ob… | Biology/Biological Studies/Biotechnology/Biochemistry Processes of recombinant DNA technology |
Medium |
| 1663 | Purified DNA is made to precipitate out of solution as fine threads by adding | Biology/Biological Studies/Biotechnology/Biochemistry Processes of recombinant DNA technology |
Medium |
| 1664 | In a continuous-culture bioreactor, used medium is drained out and fresh medium is added. The main purpose is… | Biology/Biological Studies/Biotechnology/Biochemistry Processes of recombinant DNA technology |
Hard |
| 1665 | Which part of a virus-infected plant is cultured to obtain virus-free plants? | Biology/Biological Studies/Biotechnology/Biochemistry Applications in agriculture |
Easy |
| 1666 | The proteins coded by the genes cryIAc and cryIIAb are effective against | Biology/Biological Studies/Biotechnology/Biochemistry Applications in agriculture |
Easy |
| 1667 | Bt toxin does not kill the Bacillus thuringiensis cells that make it because | Biology/Biological Studies/Biotechnology/Biochemistry Applications in agriculture |
Medium |
| 1668 | Golden rice has been genetically modified mainly to improve its content of | Biology/Biological Studies/Biotechnology/Biochemistry Applications in agriculture |
Medium |
| 1669 | In transgenic tobacco made resistant to Meloidogyne incognita, the nematode dies because | Biology/Biological Studies/Biotechnology/Biochemistry Applications in agriculture |
Hard |
| 1670 | Human insulin consists of chains A and B held together by | Biology/Biological Studies/Biotechnology/Biochemistry Applications in medicine |
Easy |
| 1671 | The first clinical gene therapy, given in 1990, treated a deficiency of which enzyme? | Biology/Biological Studies/Biotechnology/Biochemistry Applications in medicine |
Easy |
| 1672 | In the body, insulin is first made as pro-insulin. Which part must be removed to give mature insulin? | Biology/Biological Studies/Biotechnology/Biochemistry Applications in medicine |
Medium |
| 1673 | A doctor wants to detect HIV in a person infected so recently that the viral load is still very low. Which te… | Biology/Biological Studies/Biotechnology/Biochemistry Applications in medicine |
Medium |
| 1674 | A child with ADA deficiency treated by gene therapy needs repeated infusions of engineered lymphocytes because | Biology/Biological Studies/Biotechnology/Biochemistry Applications in medicine |
Hard |
| 1675 | Which animal makes up the large majority of transgenic animals produced so far? | Biology/Biological Studies/Biotechnology/Biochemistry Transgenic animals |
Easy |
| 1676 | Rosie, the first transgenic cow, produced milk enriched with | Biology/Biological Studies/Biotechnology/Biochemistry Transgenic animals |
Easy |
| 1677 | Human α-1-antitrypsin produced in transgenic animals is used to treat | Biology/Biological Studies/Biotechnology/Biochemistry Transgenic animals |
Medium |
| 1678 | Why are transgenic animals that are more sensitive to toxic substances used for chemical safety testing? | Biology/Biological Studies/Biotechnology/Biochemistry Transgenic animals |
Medium |
| 1679 | A research team wants to test whether a new treatment slows the progress of Alzheimer's disease before trying… | Biology/Biological Studies/Biotechnology/Biochemistry Transgenic animals |
Hard |
| 1680 | In India, the body that decides on the validity of GM research and the safety of releasing GM organisms is | Biology/Biological Studies/Biotechnology/Biochemistry Ethical issues |
Easy |