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Biotechnology and Its Applications

Short Answer Type

91.

How can bacterial DNA be released from the bacterial cell for biotechnology experiments?

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92. Explain how a hereditary disease can be corrected. Give an example of first successful attempt made towards correction of such diseases.

758 Views

93. Why do children cured by enzyme-replacement therapy for adenosine deaminase deficiency need periodic treatment?

1135 Views

94. Explain the significance of satellite DNA in DNA fingerprinting technique.

1596 Views

95.

Describe any three potential applications of genetically modified plants.

1363 Views

96. How did an American Company. Eli Lilly use the knowledge of r-DNA technology to produce human insulin?

American Company Eli Lilly used the knowledge of r-DNA technology to produce human insulin in the following way.

1. Preparation of DNA corresponding to A and B chain separately
2. Extraction of plasmid from bacteria
3. Insertion of DNA corresponding to A and B chain separately in plasmid
4. Transforming the bacteria with this recombinant plasmid
5. Expression of the desired product from this DNA .
6. Purification of A and B chain
7. Linking them with disulfide bonds so that they act as human insulin

822 Views

97.

State the role of C-peptide in human insulin.

909 Views

98.

How have transgenic animals proved to be beneficial in:
(a) Production of biological products
(b)Chemical safety testing.

594 Views

Long Answer Type

99.

With advancements in genetics, molecular biology and tissue culture, new traits have been incorporated into crop plants. Explain the main steps in breeding a new genetic variety of a crop.

666 Views

Short Answer Type

100.

(a) Mention the cause and the body system affected by ADA deficiency in humans.

(b) Name the vector used for transferring ADA-DNA into the recipient cells in humans. Name the recipient cells.

788 Views