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CBSE 12th Standard Biology Subject Biotechnology and its Applications Ncert Exemplar 1 Marks Questions With Solution 2021

Published on: 25/05/2021

QB365 Provides the updated NCERT Examplar Questions for Class 12 Biology, and also provide the detail solution for each and every ncert examplar questions , QB365 will give all kind of study materials will help to get more marks

Download CBSE Class 12th Standard CBSE Biology question papers, sample papers, important questions, and previous year solved papers in PDF format. Get free study materials, NCERT solutions, and exam preparation resources for Class 12th Standard CBSE Biology

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Std: 12th Standard CBSE - Biology

chapter: - NCERT Exemplers

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Questions:

1 Marks

4 x 1 = 4

For what purpose is a patent given?

What are the hybridomas?

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

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 organisms producing the toxin.

Generic 2

6 x 2 = 12

Name any two Indian traditional herbal medicines.

Why biopiracy should be prevented?

Suggest any two possible treatments that can be given to a patient exhitbiting adenosine deaminase deficiency.

Explain the term 'pathophysiology'.

Give the name of the source organisms of the gene cry Iac and its target pest.

10.

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

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Answers Key:

1 Marks

4 x 1 = 4

()
Patent is given for producing new products or inventions or for modified and improved earlier invention.

()
Fusion of myeloma cells and antibody-producing cells results in the formation of fused cells called hybridomas.

()
1) Genetic pollution: Ecological imbalance may occur due to transferring of trans genes from one organism to other.
2) Formation of Super weeds: Due to introduction of weedicide genes in crops, there is a danger that any such crop may itself become super weed.
3) Formation of super insecticides.
4) Foreign proteins formed with foreign genes may get attacked by defense system of organism leading to formation of defective biochemicals.
5) Trangenes may exhibit change in their expressivefy after attaining certain age and change in environment.

()
Such inactive forms of toxin can get activated only at a particular pH, temperature etc. Bacteria producing them, due to this reason donot get killed.

Generic 2

6 x 2 = 12

Turmeric and neem.

Biopiracy should be prevented to stop the unauthorised exploitation of bioresources.

Bone marrow transplanation and enzyme replacement therapy.

Pathophysiology is the study of functional chenges in the body of the host that occur in response to any disease or injury, e.g. if someone ingests a toxin, it may result into a variety of physical changes, such as inflammation in the stomach lining.

Source-Bacillus thuringiensis. Target pest-cotton bollworms.

10.

Amendments to the patent bill has empowered India to prevent unauthorised exploitation of our bio-resources and traditional knowledge by other countries This bill also considers patent terms and mitiates research development in this field.