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Q. No.Consider the following statements :
I.
RNAi takes place in all eukaryotic organisms as a method of cellular defence
II.
It involves silencing of a specific mRNA due to complementary dsDNA molecules that prevents the translation of mRNA
III.
Fire and Mello got Nobel Prize for the discovery of RNAi
Which of the above statements are true ?
1. I and II only
2. I and III only
3. II and III only
4. I,II and III
Subtopic: Â Interference RNA Tech |
 54%
From NCERT
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Consider the following statements about biomedical technologies.
Which two of the above statements are correct?
| A. | During open heart, surgery blood is circulated in the heart-lung machine. |
| B. | Blockage in coronary arteries X-ray by angiography. |
| C. | Computerized Axial Tomography (CAT) shows a detailed internal structure as seen in a section of the body. |
| D | X-ray provides clear and detailed images of organs like prostate glands and lungs. |
Which two of the above statements are correct?
1. B and D
2. C and D
3. A and C
4. A and B
Subtopic: Â Molecular Diagnosis |
AIPMT - 2008
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Match the organism with its use in biotechnology.
| (a) | Bacillus thuringiensis | (i) | Cloning vector |
| (b) | Thermus aquaticus | (ii) | Construction of first rDNA molecule |
| (c) | Agrobacterium tumefaciens | (iii) | DNA polymerase |
| (d) | Salmonella typhimurium | (iv) | Cry proteins |
Select the correct option from the following:
| (a) | (b) | (c) | (d) | |
| 1. | (iv) | (iii) | (i) | (ii) |
| 2. | (iii) | (ii) | (iv) | (i) |
| 3. | (iii) | (iv) | (i) | (ii) |
| 4. | (ii) | (iv) | (iii) | (i) |
Subtopic: Â Bt Crops |Â Interference RNA Tech |
 88%
From NCERT
NEET - 2020
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NEET 2023 - Target Batch - Aryan Raj Singh
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Match the following columns and select the correct option.
| Column-I | Column-II | ||
| a. | Bt cotton | (i) | Gene therapy |
| b. | Adenosine deaminase deficiency | (ii) | Cellular defense |
| c. | RNAi | (iii) | Detection of HIV infection |
| d. | PCR | (iv) | Bacillus thuringiensis |
| a | b | c | d | |
| 1. | (iii) | (ii) | (i) | (iv) |
| 2. | (ii) | (iii) | (iv) | (i) |
| 3. | (i) | (ii) | (iii) | (iv) |
| 4. | (iv) | (i) | (ii) | (iii) |
Subtopic: Â Bt Crops |Â Interference RNA Tech |Â Gene Therapy |Â Molecular Diagnosis |
 93%
From NCERT
NEET - 2020
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NEET 2023 - Target Batch - Aryan Raj Singh
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With regard to insulin, choose the correct options:
| a: | C-peptide is not present in mature insulin. |
| b: | The insulin produced by rDNA technology has C-peptide. |
| c: | The pro-insulin has C-peptide. |
| d: | A-peptide and B-peptide of insulin are interconnected by disulphide bridges. |
Choose the correct answer from the options given below:
| 1. | (a), (c) and (d) only | 2. | (a) and (d) Only |
| 3. | (b) and (d) only | 4. | (b) and (c) only |
Subtopic: Â Med Applications & Humulin |
 84%
From NCERT
NEET - 2021
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NEET 2023 - Target Batch - Aryan Raj Singh
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Give below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
| Assertion (A): | In human beings, insulin is synthesized as a pro-hormone which needs to be processed before it becomes fully mature and functional. |
| Reason (R): | The extra stretch of C-peptide is to be removed from A and B peptide chain of insulin. |
In the light of the above statements, Choose the most appropriate answer from the option given below :
| 1. | (A) is correct but (R) is not correct. |
| 2. | (A) is not correct but (R) is correct. |
| 3. | Both (A) and (R) are correct and (R) is the correct explanation of (A). |
| 4. | Both (A) and (R) are correct but (R) is not the correct explanation of (A). |
Subtopic: Â Med Applications & Humulin |
 78%
From NCERT
NEET - 2022
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NEET 2023 - Target Batch - Aryan Raj Singh
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Given below are two statements:
In light of the above statements, choose the most appropriate answer from the options given below.
1. Both statement I and statement II are true
2. Both statement I and statement II are false
3. Statement I is correct but statement II is false
4. Statement I is incorrect but statement II is true
| Statement I: | Bacillus thuringiensis forms protein crystals which contain a toxin that kills certain insects but not Bacillus because Bt toxin protein exists as inactive protoxins in Bacillus. |
| Statement II: | Bacillus thuringiensis forms protein crystals which contain a toxin that kills certain insects but not Bacillus because toxin requires alkaline pH available in the gut of insects and which solubilises the crystals in order to convert into an active form. |
1. Both statement I and statement II are true
2. Both statement I and statement II are false
3. Statement I is correct but statement II is false
4. Statement I is incorrect but statement II is true
Subtopic: Â Bt Crops |
 91%
From NCERT
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Please attempt this question first.
Given below are two statements :
In light of the above statements, choose the most appropriate answer from the options given below:
1. Both Statement I and Statement II are true
2. Both Statement I and Statement II are false
3. Statement I is true and Statement II is false
4. Statement I is false but Statement II is true
| Statement I: | Proteins encoded by genes cryIAc and cryllAb control corn borer, that of crylAb control the cotton bollworms |
| Statement II: | Bt toxin protein exist as inactive protoxins but once an insect ingests the inactive toxin, it is converted into an active form of toxin due to the alkaline pH of the gut |
1. Both Statement I and Statement II are true
2. Both Statement I and Statement II are false
3. Statement I is true and Statement II is false
4. Statement I is false but Statement II is true
Subtopic: Â Bt Crops |
 77%
From NCERT
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Mutations in the CFTR gene cause cystic fibrosis (CF). The non-mutated allele of the gene can be obtained and then introduced into the lung cells of a person with CF using liposomes as a vector. This treatment gives only short-term relief from the symptoms of CF.
Which of the following statements would be a correct explanation of this treatment?
1. Genes are unstable and break down over time in the cell.
2. Lung cells are constantly being replaced and new cells will have the faulty allele.
3. The non-mutated allele is recessive.
1. 1 and 2 only
2. 1 only
3. 2 only
4. 1 and 3 only
Which of the following statements would be a correct explanation of this treatment?
1. Genes are unstable and break down over time in the cell.
2. Lung cells are constantly being replaced and new cells will have the faulty allele.
3. The non-mutated allele is recessive.
1. 1 and 2 only
2. 1 only
3. 2 only
4. 1 and 3 only
Subtopic: Â Med Applications & Humulin |
 51%
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Which combinations of DNA could be present in a transgenic organism?
(i) invertebrate animal DNA in mammal DNA
(ii) prokaryotic DNA in plant DNA
(iii) plant DNA in animal DNA
1. (i), (ii) and (iii)
2. (ii) and (iii) only
3. (i) and (iii) only
4. (i) and (ii) only
(i) invertebrate animal DNA in mammal DNA
(ii) prokaryotic DNA in plant DNA
(iii) plant DNA in animal DNA
1. (i), (ii) and (iii)
2. (ii) and (iii) only
3. (i) and (iii) only
4. (i) and (ii) only
Subtopic: Â Transgenic Microbes & Animals |
 50%
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