Biology

Biotechnology and its Applications

Question:

Many proteins are secreted in their inactive form. This is also hue of many toxic proteins produced by micro organisms. Explain how the mechanism is useful for the organism producing the toxin.

Answer:

Many proteins including certain toxins are secreted in their inactive form. They get activated, only when exposed to a specific trigger (pH. temperature etc.). It is advantageous to the bacteria producing it because the bacteria does not get killed due to the action of protein.

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Biotechnology and its Applications

Q 1.

Many proteins are secreted in their inactive form. This is also hue of many toxic proteins produced by micro organisms. Explain how the mechanism is useful for the organism producing the toxin.

Q 2.

Explain with the help of one example how genetically modified plants can:
(a) Reduce usage of chemical pesticides .
(b) Enhance nutritional value of food crops

Q 3.

Gene therapy is an attempt to correct a genetic defect by providing a normal gene into the individual. By this’the normal function can be restored. An alternate method would be to provide the gene product (protein/enzyme) known as enzyme replacement therapy, which would also restore the function. Which in your opinion is a better option? Give reason for your answer.

Q 4.

Explain with the help of one example how genetically modified plants can:
(a) Reduce usage of chemical pesticides .
(b) Enhance nutritional value of food crops

Q 5.

Gene expression can be controlled with the help of RNA. Explain the method with an example.

Q 6.

Why has the Indian Parliament cleared the second amendment of the country's patents bill?

Q 7.

Transgenic animals are the animals in which a foreign gene is expressed. Such animals can be used to study the fundamental biological process, phenomenon as well as for producing products useful for mankind. Give one example for each type.

Q 8.

What is gene therapy? Illustrate using the example of adenosine deaminase (ADA) deficiency.

Q 9.

Name the first transgenic cow. Which gene was introduced in this cow?

Q 10.

Expand GMO. How is it different from a hybrid?

Q 11.

Highlight five areas where biotechnology has influenced our lives.

Q 12.

Define transgenic animals. Explain in detail any four areas where they can be utilised.

Q 13.

Does our blood have proteases and nucleases?

Q 14.

Give the full form of ELISA. Which disease can be detected using it? Discuss the principle underlying the test.

Q 15.

Consult internet andflnd out howto makeorally activ&protein pharmaceutical. What is the major problem to be encountered?

Q 16.

For which variety of Indian rice, the patent was filed by a USA Company?

Q 17.

Ignoring our traditional knowledge can we prove costly in the area of biological patenting. Justify.

Q 18.

Differentiate between diagnostics and therapeutics. Give one example and for each category.

Q 19.

What are Cry proteins? Name an organism that produce it. How has man exploited this protein to his benefit?

Q 20.

PCR is a useful tool for early diagnosis of an infectious disease. Elaborate.

Q 21.

Gene expression can be controlled with the help of RNA. Explain the method with an example.

Q 22.

A patient is suffering from ADA deficiency. Can he be cured. How?

Q 23.

List the advantages of recombinant insulin.

Q 24.

How is a mature, functional insulin hormone different from its prohormone form?

Q 25.

Why is it that the line of treatment for a genetic disease is different from infectious diseases?

Q 26.

What are the various advantages of using genetically modified plants to increase the overall yield of the crop?

Q 27.

What is a recombinant DNA vaccine? Give two examples.

Q 28.

With respect to understanding diseases,’discuss the importance of transgenic animal models.

Q 29.

Bt cotton is resistant to pest, such as lepidopteron, dipterans and coleopterans. Is Bt cotton also resistant to other pests as well?

Q 30.

Write a short note on biopiracy highlighting the exploitation of developing countries by the developed countries.

Q 31.

Highlight any four areas where genetic modification of plants has been useful.

Q 32.

Can a disease be detected before its symptoms appear? Explain the principle involved.

Q 33.

What is meant by the term bio-pesticide? Name and explain the mode of action of a popular bio-pesticide.

Q 34.

Find out from internet what is golden rice.

Q 35.

In view of the current food crisis, it is said, that we need another green revolution. Highlight the major limitations of the earlier green revolution.

Q 36.

Discuss briefly how a probe is used in molecular diagnostics.

Q 37.

Name the five key tools for accomplishing the tasks of recombinant DNA technology. Also mention the functions of each tool.

Q 38.

Who was the first patient who was given gene therapy? Why was the given treatment recurrent in nature?

Q 39.

While creating genetically modified organisms, genetic barriers are not respected. How can this be dangerous in the long run?

Q 40.

Give any two reasons why the patent on Basmati should not have gone to an American Company.

Q 41.

Discuss the advantages of GMO.

Q 42.

Taking examples under each category, discuss upstream and downstream processing.

Q 43.

How was Insulin obtained before the advent of rDNA technology? What were the problems encountered?

Q 44.

What is GEAC and what are its objectives?

Q 45.

ELISA technique is based on the principles of antigen-antibody interaction. Can this techique be used in the molecular diagnosis of a genetic disorder, such as phenyketonuria?

Q 46.

List the disadvantages of insulin obtained from the pancreas of slaughtered cows and pigs:

Q 47.

What are transgenic bacteria? Illustrate using any one example.

Q 48.

Define Antigen and Antibody. Name any two diagnostic kits based upon them.

Q 49.

Compare and contrast the advantages and disadvantages of production of genetically modified crops.

Q 50.

Can you suggest a method to remove oil (hydrocarbon) from seeds based on your understanding of rDNA technology and chemistry of oil?