Biotechnology and its Applications · Question 22

Now-a-days it is possible to detect the mutated gene causing cancer by allowing radioactive probe to hybridise to its complementary DNA in a clone of cells, followed by its detection using autoradiography because:

1. mutated gene does not appear on photographic film as the probe has complementarity with it
2. mutated gene partially appears on a photographic film
3. mutated gene completely and clearly appears on a photographic film
4. mutated gene does not appear on a photographic film as the probe has no complementarity with it

With regard to insulin choose correct options. Choose the correct answer from the options given below.

1. A and D only
2. B and D only
3. B and C only
4. A, C and D only

For effective treatment of the disease, early diagnosis and understanding its pathophysiology is very important. Which of the following molecular diagnostic techniques is very useful for early detection?

1. Hybridization Technique
2. Western Blotting Technique
3. Southern Blotting Technique
4. ELISA Technique

The Adenosine deaminase deficiency results into

1. Addison's disease
2. Dysfunction of immune system
3. Parkinson's disease
4. Digestive disorder

Bt cotton variety that was developed by the introduction of toxin gene of Bacillus thuringiensis (Bt) is resistant to

1. Insect predators
2. Insect pests
3. Fungal diseases
4. Plant nematodes

Which of the following statements is not correct?

1. In man insulin is synthesised as a proinsulin
2. The proinsulin has an extra peptide called C-peptide.
3. Genetically engineered insulin is produced in E. coli.
4. The functional insulin has A and B chains linked together by hydrogen bonds.

Match the following columns and select the correct option.

1. (a)-(i), (b)-(ii), (c)-(iii), (d)-(iv)
2. (a)-(iii), (b)-(ii), (c)-(i), (d)-(iv)
3. (a)-(iv), (b)-(i), (c)-(ii), (d)-(iii)
4. (a)-(ii), (b)-(iii), (c)-(iv), (d)-(i)

What triggers activation of protoxin to active Bt toxin of Bacillus thuringiensis in boll worm?

1. Acidic pH of stomach
2. Body temperature
3. Alkaline pH of gut
4. Moist surface of midgut

Which of the following is true for Golden rice?

1. It is drought tolerant, developed using Agrobacterium vector.
2. It has yellow grains, because of a gene introduced from a primitive variety of rice.
3. It is Vitamin A enriched, with a gene from daffodil.
4. It is pest resistant, with a gene from Bacillus thuringiensis.

Which of the following is commonly used as a vector for introducing a DNA fragment in human lymphocytes?

1. Retrovirus
2. Ti plasmid
3. phage
4. pBR322