The 'mad-cow disease' (Jakob-Creutzfeldt disease) is produced by certain

A. bacterium

B. virus

C. viroid

D. prion

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  1. Eye is an organ that can be called as
  2. Food substances are substances by
  3. The nerve messages enter the cell through the
  4. Measles is caused by
  5. The dreaded virus which, on reaching the central nervous system, produces spasms of the muscles of the…
  6. The wall of the heart is made of programmed cell death is known as
  7. Which of the following terms is used in Botany?
  8. A child goes on vomiting profusely and develops symptoms of diarrhoea. Chances are that in the child's…
  9. Lymphocytes are manufactured by
  10. It is possible to produce seedless tomato fruits by
  11. The two minerals required to keep teeth and bones intact and in good condition are
  12. The primary energy for living organisms is
  13. The following disease is prevented by triple-antigen immunization
  14. What do you mean by lentic biota?
  15. What is the bacterial disease in lime fruits?
  16. Scrub jungle Is characterised by
  17. Blood clot Inside blood vessels is prevented by
  18. Hormones are carried from their place of production by
  19. Which one of the ecosystems Is the largest in the world?
  20. In case of a heart attack a hormone is injected as an emergency measure. Which one is it?
  21. Coagulation of blood in vessels is prevented during normal circulation by
  22. The aphotic zone means that light is
  23. Maize is attacked by
  24. Which element in chillies causes burning sensations?
  25. Which among the following animals has the largest Intestine?
  26. Appearance of offspring resembling their remote ancestor is called
  27. Injection of insulin causes
  28. The biogenetic law was proposed by
  29. One of the following disease cannot be prevented by the DPT (triple-antigen) immunization of children.
  30. One of the sequences given below represents a complete metamorphosis. Which one is it?