Page 3 - Assignment-Apllicationns in Biotechnology

B. Very Short Answer Questions (1 mark each)

1. Name the technique based on the principles of antigen-antibody used in detection of a
virus.
2. Development of a transgenic food crop may help in solving the problem of night
blindness in the developing countries, name this crop plant.
3. Which nematode infects the roots of tobacco plant and causes a great reduction in
yield?
4. The first transgenic cow, produced human protein – enriched milk. Name the cow
and the protein found in milk.
5. The insulin produced using recombinant DNA technology is more advantageous than
the insulin extracted from pancreas of slaughtered cattle and pigs. How?
6. Name two pest resistant plants produced by using recombinant DNA technology.

C. Short Answer Questions-II (2 marks each)
7. What are the two methods for correcting ADA deficiency in a child?
8. Some crop plants are modified genetically by manipulating their genes. How are they
made beneficial?
9. GEAC is one of the organization set up by Indian Government. Write its full form.
Give its two objectives.
10. “Industrialised nations are exploiting the bioresources of under industrialised
nations”. Justify the statement with a suitable example.

D. Short Answer Questions-I (3 marks each)

11. Some multinational companies and other organisations are using bioresources for
commercial benefits, without proper authentication and compensation to concerned
authorities.
(a) Give the term for this unauthorised act.
(b) Suggest any two ways to get rid of this.
12. A bacterium Bacillus thuringiensis produces a toxic protein named „cry protein‟ that is
lethal to certain insects but not to bacterium
(a) Why this toxin does not kill the bacteria?
(b) What type of changes occur in the gut of insects on consuming this protein?
(c) How man has exploited this protein for his benefit?
13. Given below is an incomplete flow chart showing the process of production of
nematode resistant tobacco plants based on RNAi technique.
(i) Write the missing steps in proper sequence
(ii) At which level RNAi silences the gene