NCERT Exemplar solutions for Biology [English] Class 12 chapter 12 - Biotechnology and Its Applications [Latest edition]

Bt cotton is not ______.

C-peptide of human insulin is ______.

GEAC stands for ________.

α - 1 antitrypsin is ______.

A probe which is a molecule used to locale-specific sequences in a mixture of DNA or RNA Mole cubs could be ______.

Choose the correct option regarding retrovirus.

The site of production of ADA the body is ______.

A protoxin is ______.

A pathophysiology is the ______.

The trigger for activation of toxin of bacillus thuringlensis is ______.

Golden rice is ______.

In RNAi genes are silenced using ______.

The first clinical gene therapy was done for the treatment of ________.

ADA is an enzyme which is deficient in a genetic disorder SCID. What is the full form of ADA?

Silencing of a gene could be achieved through the use of ______.

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.

Expand GMO. How is it different from a hybrid?

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

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

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

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

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

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

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

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

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

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

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

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

What is GEAC and what are its objectives?

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

Discuss the advantages of GMO.

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

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

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

What is a recombinant DNA vaccine? Give two examples.

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

Discuss briefly how a probe is used in molecular diagnostics.

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

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

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

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

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

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

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.

When a foreign DNA is introduced into an organism, how is it maintained in the host and how is it transferred to the progeny of the organism?

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

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

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

You have identified a useful gene in bacteria. Make a flow chart of the steps that you would follow to transfer this gene to a plant.

Highlight five areas where biotechnology has influenced our lives.

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

Explain with the help of one example how genetically modified plants can:

1. Reduce usage of chemical pesticides
2. Enhance nutritional value of food crops

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

List the advantages of recombinant insulin.

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

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