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Why is secondary immune response more intense than the primary immune response in humans?
Concept: Immunity
Answer the following question:
The principle of vaccination is based on the property of the "memory" of the immune system. Taking one suitable example, justify the statement.
Concept: Immunity
Answer the following question.
Differentiate between the roles of B-lymphocytes and T-lymphocytes in generating immune responses.
Concept: Immunity
State the role of the thymus as a lymphoid organ. Name the cells that are released from it and mention their function.
Concept: Immunity
Why is a malignant tumour considered to be more damaging than a benign tumour? Explain.
Concept: Cancer
Name the type of association that the genus Glomus exhibits with higher plants.
Concept: Microbes as Biocontrol Agents
Explain the process of sewage water treatment before it can be discharged into natural water bodies.
Concept: Microbes in Sewage Treatment
Answer the following question:
Why does 'Swiss Cheese' develop large holes?
Concept: Microbes in Household Products
- Give an example of a genus of virus used as narrow spectrum insecticidal biocontrol agent.
- How does its use serve as an aid in overall integrated pest management programme?
Concept: Microbes as Biocontrol Agents
Why must a cell be made ‘competent’ in biotechnology experiments? How does calcium ion help in doing so?
Concept: Tools of Recombinant DNA Technology >> Competent Host (For Transformation with Recombinant DNA)
Explain with the help of a suitable example the naming of a restriction endonuclease.
Concept: Tools of Recombinant DNA Technology >> Restriction Enzymes
How are 'sticky ends' formed on a DNA strand? Why are they so called?
Concept: Tools of Recombinant DNA Technology >> Restriction Enzymes
Name two commonly used bioreactors.
Concept: Processes of Recombinant DNA Technology
State the role of “biolistic gun” in biotechnology experiments.
Concept: Tools of Recombinant DNA Technology >> Competent Host (For Transformation with Recombinant DNA)
Name and explain the technique used for separating DNA fragments and making them available for biotechnology experiments.
Concept: Principles of Processes of Biotechnology
Write the role of ‘restriction sites’ in the cloning vector pBR322.
Concept: Tools of Recombinant DNA Technology >> Cloning Vectors
Answer the following question:
Describe the formation of recombinant DNA by the action of EcoRI.
Concept: Processes of Recombinant DNA Technology
How does a gene therapy involving direct modification of the cells, in order to achieve a therapeutic goal is used in the treatment of ADA deficiency? Explain.
Concept: Applications of Biotechnology in Health and Medicine
A host cell must be made competent, before it is able to receive an rDNA. Justify.
Concept: Applications of Biotechnology in Health and Medicine
A Tight one-to-one relationship between many species of fig tree and certain wasps is an example of ______.
Concept: Population Interactions
