XI Biology Prokaryotes (Bacteria) online Test Mdcat-2024

1. Which statement is correct about Domain System Of Classification?
1. It was proposed before the Five kingdom system of classification
2. It was proposed by Carl Woese and his colleagues
3. Its bases upon the difference between sub-cellular structures like Golgi complex and Cell membranes
4. Domains: Archaea, Bacteria and Eukarya

2. Which Of the following domains are prokaryotes ?

3. Escherichia Coli  bacteria contains approximately ______________.

4. Archaea diameter ranging from __________.

5. With respect internal cell structure, which of the following is correct statement?

6. Which Of following statement is incorrect regarding Bacteria domain:

7. Select the correct statements regarding the theory of symbiogenesis:

I. Mitochondria and chloroplasts were once primitive bacterial cells.

II. Konstantin Mereschkowski first outlined the theory of symbiogenesis.

III. Mitochondria and chloroplasts can survive outside eukaryotic cells.

IV. Mitochondria and chloroplasts have their own DNA.

8. Identify the correct statements about the evolution of mitochondria and chloroplasts:

I. Mitochondria and chloroplasts were once ingested by a primitive host.

II. They have become more specialized and dependent on the host cell over millions of years.

III. They can produce proteins required for the overall cell without the host cell's nucleus.

IV. Mitochondria and chloroplasts have lost all of their DNA over time.

9. mtDNA is passed down directly form ______

10. The range of bacteria extends up to ____ in the atmosphere and ______ deep in water.

11. Identify the incorrect statement:

12. Syphilis is caused by _________named as_________.

13. Most abundant Photosynthetic organism on earth is_________ and belongs to domain________

14. Correct about cyanobacteria :

I. They can survive in low CO₂

II. Rubisco Enzyme Helps to convert CO₂ into O₂

III. Filamentous Bacteria can Fix elemental nitrogen

IV. Cyanobacteria are Photosynthetic and, therefore, contain Chloroplast

15. Heterocysts are _____________in _______________used for _________________.

16. Mesosomes  are _______________ in Bacteria and helps in_____________.

17. Identify whether the following statements are True or False:

i) Slime provides a slimy and slippery nature to bacterial cells.

ii) Capsules protect bacteria from desiccation and ingestion by white blood cells.

iii) Inclusions perform metabolic activities within the bacterial cell.

18. Match the following components with their functions:

19. Which of the following structures is associated with bacterial pathogenicity in host organisms?

20. Identify whether the following statements are True or False:

i) Gram-positive bacteria have a thick peptidoglycan layer.

ii) Gram-negative bacteria do not have an outer membrane.

iii) The cell wall thickness of Gram-positive bacteria ranges from 20-80 nm.

21. Which of the following characteristics is found in Gram-negative bacteria but not in Gram-positive bacteria?

22. Which of the following is not a gram-negative Bacteria:

23. Bacterial cell wall is made up of _______ which is mixture of two conjugated molecules called________.

24. Which of the following describes the arrangement of cocci in groups of four?

25. Match the following types of bacteria with their descriptions:

26. Which Of the following are slightly curved like comma shape with flagella ?

27. Identify the diagram:

28. Match the bacterial flagellar arrangements in Column A with their corresponding descriptions in Column B:

29. What protein primarily composes the bacterial flagellum?

30. What is the role of plasmids in bacteria?

31. Tick the correct statements about the bacterial chromosome:

32. Photoautotrophic bacteria use sun light as energy source ________ as reducing agent and __________as by product.

33. Phototrophic bacteria :

34. Iron bacteria also known as ________ and they oxidize _________________.

35. Growth of bacteria cultures is defined as an increase in the ____________.

36.

37. Tick the incorrect statement:

I.Conjugation is the process by which one bacterium transfers genetic material to another through direct contact

II. In Transformation, a bacterium takes in DNA using bacteriophage

III. In Transduction, a bacterium takes in DNA from its environment

38. Which of the following is not a beneficial use of bacteria?

39. Which part of the bacterial cell undergoes dehydration and gets surrounded by a thick-layered covering during endospore formation?

40. Cholera and Typhoid Caused by _________________ respectively.

41. Tuberculosis is caused by ________ named _______.

42. Which of the following is not a bacterial disease?

43. Which of the following is/are not free from Bacterial flora?

44. How do Antibiotics work?

45. Which of the following combinations represents the longer pasteurization time and lower temperature?

46. Lyophilization:

47. Which chemical was first used as Disinfectants?

48. Which statement best describes the difference between budding and binary fission?

49. In which phase, the bacterial growth rate is high?

50. Which one of the following is not a Autotrophic bacteria ?

51. Which of the following bacteria is/are considered as heterotrophic?

52. On the basis of flagella, the following bacteria are classified as: