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Write two differences between: B cells a...

Write two differences between: B cells and T cells

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B-cells produce an army of proteins called antibodies in blood. T-cells help B-cells to produce antibodies.
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ICSE-SAMPLE QUESTION PAPER 4-PART II
  1. What is meant by sex-linked inheritance ? Give few examples in man.

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  2. produced by bacterium Streptococcus and midified by genetic engineerin...

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  3. Write two differences between: B cells and T cells

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  4. Write two differences between: Antibodies and interferons

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  5. An organism has to overcome stressful condition for a limited period o...

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  6. Write the importance of species diversity to the Exosystem. Support yo...

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  7. Explain with suitable examples of ectoparasites and endoparasites.

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  8. Why is the polar region not a suitable habitat for tiny humming birds ...

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  9. What are Sex chromosomes?

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  10. What is recombination? Mention its applications with reference to gene...

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  11. Name the causative organism, transmission and symptoms of pneumonia.

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  12. Describe the characteristics a cloning vector must possess.

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  13. Define Parasitism

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  14. In commensalism

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  15. Define and give one examples of each: Mutualism

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  16. Describe the termination process of transcription in bacteria.

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  17. What is single cell protein ? Give its source and significance.

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  18. Define sacred groves. What is their role in the conservation of biodiv...

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  19. Explain the birth rate and death rate in population with the help of a...

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  20. Represent diagrammatically three kinds of age - pyramids for humn...

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