Question 1. Name a serum compound produced by genetically modified bacteria to treat
Question 2. How many chromosomes are present in a bacterial cell?
Question 3. Name four sites in the human body where many bacteria are found.
Question 4. The bacterial cell wall is made of _________.
Question 5. Identify the following bacteria.haemophilia A and B.
a. Found in long chains
b. Found in clusters
Question 6. Name the antibiotic that was first produced.
Question 7. Name and draw two common moulds that grow on fruits.
Question 8. Name the method of reproduction in bacteria during unfavourable conditions.
Question 9. Who discovered streptomycin?
Question 10. Name two vitamins present in mushrooms.
Question 11. Name a bacterium commonly used in genetic engineering in which human
Question 12. The source of streptomycin was _________.
Question 13. What is a serum? genes are introduced.
Question 14. Streptomycin is the product of a __________.
Question 15. Name the component of plasma that has been removed to produce serum.
Question 16. Penciliin is produced from __________.
Question 17. What is the slimy protective layer outside the cell wall of a bacterium called?
Question 18. Name four diseases for which vaccines are available.
Question 19. Name the vaccines and diseases that contain the following:
a. Killed bacteria
b. Living weakened bacteria
Question 20. Describe the structure of a bacterium.
Question 21. Name and draw the various shapes of bacteria.
Question 22. Write three characteristics of wine.
Question 23. Draw a neat labeled diagram of the bacterial cell.
Question 24. Describe sexual reproduction in bacteria.
Question 25. Draw a neat labeled diagram showing stages of sexual reproduction in
Question 26. How do bacteria reproduce during unfavourable conditions?
Question 27. Draw a neat labeled diagram showing a bacterium forming a spore inside
Question 28. Name any two means by which spores are transported.
Question 29. Give the technical term for the following shapes of bacteria:Rhizopus. itself.
a. Spherical
b. Twisted
c. Rod shaped
d. Comma shaped
Question 30. Mention three characteristics of a cell wall.
Question 31. What are antibiotics? Give two examples.
Question 32. What happens when spores meet favourable conditions?
Question 33. Give three criteria of a good antibiotic.
Question 34. Name the source organism and disease treated of the following antibiotics:
a. Penicillin
b. Streptomycin
c. Chlorotetracycline
d. Erythromycin
Question 35. Mention four uses of antibiotics.
Question 36. How is serum prepared?
Question 37. What happens when vaccines are injected into the body?
Question 38. How are some bacterias present in our intestines beneficial?
Question 39. a. Name and draw the bacteria present in root nodules of leguminous plants.
Question 40. a. What are toxoids?
Question 41. a. Write a short note on the following:
b. What is the function of these bacteria?
b. What is the role of denitrifying bacteria?
c. Discuss the role of bacteria in industry.
1. Food poisoning.
2. Decay
3. Putrefaction
b. Name any four simpler chemical compounds that are returned to the soil by bacteria due to their action on dead bodies.
Question 42. Briefly describe any five methods of food preservation.
Question 43. a. Name any two bacterial diseases in the following:
1. Plants
2. Animals
3. Humans
b. Write a short note on bioweapons.
b. With the help of a neat labeled diagram explain how do yeast reproduce.
Question 44. a. Draw a neat labeled diagram of a single cell of yeast.
Question 45. Describe the five major steps of mushroom cultivation.