Quiz_Monera

1. To which country Antony van Leeuwenhoek belong?

 
 
 
 

2. All the following human diseases are due to members of the genus Clostridium except:

 
 
 
 

3. Milk is converted to curd by:

 
 
 
 

4. Pneumonia is caused by:

 
 
 
 

5. In bacterial chromosome, the nucleic acid polymers are:

 
 
 
 

6. Chemosynthetic bacteria are:

 
 
 
 

7. Mycoplasma was discovered by:

 
 
 
 

8. Little leaf disease of Brinjal is caused by:

 
 
 
 

9. Which bacteria convert nitrate into nitrogen?

 
 
 
 

10. To introduce a foreign gene in a plant, which one is used?

 
 
 
 

11. Which is a group of ancient photosynthetic prokaryotes which give oxygen during photosynthesis?

 
 
 
 

12. Clostridium can:

 
 
 
 

13. Which functions as hydrogen donor in photosynthetic green sulfur bacteria?

 
 
 
 

14. Which is the hydrogen donor in the bacterial photosynthesis?

 
 
 
 

15. Which family of bacteria can decompose a wide variety of organic compounds, natural or man-made, including inert ones like hydrocarbons? This property has actually been used by scientists to reduce pollution such as that from petroleum spillage:

 
 
 
 

16. Cell walls of Gram-positive bacteria contain:

 
 
 
 

17. The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals include the:

 
 
 
 

18. What are plasmids?

 
 
 
 

19. Broad spectrum antibiotic is, which:

 
 
 
 

20. Bacteria which are found in marshy areas and among the flora of cattle rumen are called:

 
 
 
 

21. Which organisms are the oldest life forms?

 
 
 
 

22. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

23. An English surgeon believed that microorganisms of the air caused infection in the wound and to avoid the infection, he used carbolic acid and hence he became the father of modern antiseptic surgery. His name is:

 
 
 
 

24. The largest known bacterium is:

 
 
 
 

25. Which of the following characteristics is associated with specialized transduction?

 
 
 
 

26. Cocci types of bacteria are:

 
 
 
 

27. Borrelia burgdorferi is noted for its ability to cause:

 
 
 
 

28. A microbiologist found that some bacteria infected by phages had developed the ability to make a particular amino acid that they could not make before. This ability was probably a result of:

 
 
 
 

29. Nitrifying bacteria play an important role by converting:

 
 
 
 

30. Of all organisms, the most adaptable and versatile are:

 
 
 
 

31. Which of the following converts CO_ into carbohydrates?

 
 
 
 

32. Usually, bacteria reproduce by:

 
 
 
 

33. All archaebacteria lack:

 
 
 
 

34. Genetically engineered bacteria have been successfully used in the commercial production of:

 
 
 
 

35. Which is not found in bacteria?

 
 
 
 

36. An organism that lacks plastids, even then it manufactures its own food material:

 
 
 
 

37. Beijerinck isolated a free living nitrogen fixer bacterium, named:

 
 
 
 

38. Which statement is wrong in regard to bacteria?

 
 
 
 

39. Mycoplasma contains:

 
 
 
 

40. Which one is the smallest organism capable of autonomous growth and reproduction?

 
 
 
 

41. The root nodules of leguminous plants contain:

 
 
 
 

42. The penicillin family of antibiotics is used primarily against:

 
 
 
 

43. The specific genes found on the plasmids of E coli are:

 
 
 
 

44. Streptomycin is obtained from:

 
 
 
 

45. Doctors usually boil their syringe and other surgical instruments before use:

 
 
 
 

46. Mycoplasma are sensitive to:

 
 
 
 

47. Mycoplasmas are not viruses in nature because:

 
 
 
 

48. Diphtheria is caused by:

 
 
 
 

49. Asexual reproductive bodies in some higher mycelial bacteria (eg, Actinomycetous forms) are:

 
 
 
 

50. Which disease is caused by the bacterium Treponema pallidum?

 
 
 
 

51. The antibiotic is obtained from:

 
 
 
 

52. Waksman was awarded Nobel Prize for the discovery of:

 
 
 
 

53. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

54. Retting is a process, by which bacteria bring about the:

 
 
 
 

55. Bacteria which are spherical are called:

 
 
 
 

56. Substances obtained from microorganisms and used to inhibit the growth of other microorganisms are:

 
 
 
 

57. The decomposition of organic compounds in the presence of O2 and without the development of odoriferous substances is called:

 
 
 
 

58. According to the fossil record, which event has occurred most recently?

 
 
 
 

59. For the disease of red stripe of sugarcane the bacterium responsible is:

 
 
 
 

60. Bacteria are considered to be plants because they:

 
 
 
 

61. Chemoautotrophic bacteria are bacteria that derive their energy from chemical reactions and:

 
 
 
 

62. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

63. Streptomyces falls under:

 
 
 
 

64. Which of the following is a free-living anaerobic nitrogen-fixing bacteria?

 
 
 
 

65. Which of the following statement is correct?

 
 
 
 

66. Acetobacter is useful in:

 
 
 
 

67. Which bacteria convert NO_ to elemental nitrogen?

 
 
 
 

68. The smallest bacterium is:

 
 
 
 

69. Those bacteria believed to have lived during the earliest years of the Earth belong to the group:

 
 
 
 

70. Bacteria which convert elemental nitrogen into nitrogenous substances are:

 
 
 
 

71. In bacterial photosynthesis, which functions as reductant of CO_ is:

 
 
 
 

72. Which is not true for Escherichia coli?

 
 
 
 

73. Mycoplasma are:

 
 
 
 

74. Most of the members of the genus Bacillus are known for:

 
 
 
 

75. The mode of nutrition of bacteria is usually:

 
 
 
 

76. An Hfr bacterium is one that contains:

 
 
 
 

77. Halophiles are the bacteria that require for growth:

 
 
 
 

78. A plasmid found in some bacteria can integrate reversibly with the chromosome of its host and then it behaves as part of the host chromosome, multiplying with it What is this plasmid known as?

 
 
 
 

79. For purposes of microbial control, the term sterilization implies:

 
 
 
 

80. Germ theory of disease was proposed by:

 
 
 
 

81. Among the currently used drugs for treating tuberculosis are:

 
 
 
 

82. What is the role of nitrifying bacteria?

 
 
 
 

83. Diaminopimelic acid and muramic acid are constituents of cell walls in:

 
 
 
 

84. When the F-factor enters a recipient cell during conjugation, the recipient cell:

 
 
 
 

85. Botulism is a:

 
 
 
 

86. Bacteria species of Thiobacillus and Beggiatoa play an important role in the:

 
 
 
 

87. In prokaryotes, the mitochondria are absent. Even then Krebs’ cycle takes place. What is the site of Krebs’ cycle in bacteria?

 
 
 
 

88. Bacteria were first discovered by:

 
 
 
 

89. The cell wall of bacteria is made-up of:

 
 
 
 

90. The common bacterium, which lives in the human intestine is:

 
 
 
 

91. Triple antigen injection or vaccine are for:

 
 
 
 

92. Plasmids are:

 
 
 
 

93. Under suitable conditions, some bacteria are capable of reproducing by binary fission once every half hour. Suppose you placed a single bacterium in a culture medium and it (and its descendants) proceeded to reproduce at this rate. How many bacteria would be present after 5 hours?

 
 
 
 

94. Wine turns sour because of:

 
 
 
 

95. Bacteria growing on synthetic medium are called:

 
 
 
 

96. Which of the following is necessary for the process of conjugation in bacteria?

 
 
 
 

97. Sometimes the bacterial cell is enclosed in:

 
 
 
 

98. Photoautotrophic bacteria have:

 
 
 
 

99. Which of the following are absent in Mycoplasma?

 
 
 
 

100. Which of the following diseases are caused by Mycoplasma?

 
 
 
 

101. Some diseases caused by bacteria are:

 
 
 
 

102. Methanogens belong to:

 
 
 
 

103. All the following human diseases are caused by spirochetes except:

 
 
 
 

104. Antibiotics cure the disease by:

 
 
 
 

105. Enteric bacteria are those bacteria that live:

 
 
 
 

106. Mycoplasma is different from bacteria due to:

 
 
 
 

107. The bacteria, which are smallest in size are:

 
 
 
 

108. Which of the following is a beneficial activity of microorganisms?

 
 
 
 

109. Leptothrix is an example of iron bacteria Which of the following statements best fit the iron bacteria?

 
 
 
 

110. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

111. Photosynthetic bacteria have:

 
 
 
 

112. Botulinum toxin effects:

 
 
 
 

113. Economic importance of bacteria lies in their being:

 
 
 
 

114. Members of the genus Streptococcus are responsible for cases of:

 
 
 
 

115. Usually bacteria do not require light for synthesis of food:

 
 
 
 

116. Soil fertility is lost by the activities of:

 
 
 
 

117. Gram stain is used to:

 
 
 
 

118. Select the wrong statement:

 
 
 
 

119. Pasteurized milk is:

 
 
 
 

120. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

121. Certain bacteria are able to thrive under extreme environmental conditions such as the absence of oxygen, high salt concentration, high temperature, or highly acidic environment What are these bacteria called?

 
 
 
 

122. Which is the nuclear material in bacteria?

 
 
 
 

123. The similarity between cyanobacteria and bacteria:

 
 
 
 

124. The method of reproduction in bacterium, in which a virus participates is:

 
 
 
 

125. The bacteria that cause tetanus can be killed only by prolonged heating at temperatures considerably above boiling. This suggests that tetanus bacteria:

 
 
 
 

126. E coli is a:

 
 
 
 

127. Nitrogen-fixing bacteria may be located:

 
 
 
 

128. Which scientist in 1884 developed a valuable method of staining the bacteria?

 
 
 
 

129. Leprosy is caused by:

 
 
 
 

130. Bacteria are found everywhere, except:

 
 
 
 

131. Water-borne bacterial diseases are:

 
 
 
 

132. The bacterial decomposition of nitrogenous organic compounds in the absence of abundant oxygen usually results in the formation of substances of offensive odor, chiefly sulfur compounds. Such anaerobic decomposition is called:

 
 
 
 

133. At least two billion years, nearly half the age of Earth, the only organisms that existed were:

 
 
 
 

134. Substances released by some bacteria to cause toxicity in host are:

 
 
 
 

135. Match column I with column II and select the correct option using the codes given below:

| Column I | Column II |
|——————|—————–|
| A Citric acid | (i) Trichoderma |
| B Cyclosporin A | (ii) Clostridium|
| C Statins | (iii) Aspergillus|
| D Butyric acid | (iv) Monascus |

Codes:

| | A | B | C | D |
|——|—|—|—|—|
| (a) | i | iv| ii| iii|
| (b) | iii| iv| i | ii|
| (c) | iii| i | ii| iv|
| (d) | iii| i | iv| ii|

Answer: (d) iii, i, iv, ii

Explanation: The correct matching is:
– A Citric acid – (iii) Aspergillus
– B Cyclosporin A – (i) Trichoderma
– C Statins – (iv) Monascus
– D Butyric acid – (ii) Clostridium

179 Which of the following sets of diseases is caused by bacteria?

 
 
 
 

136. Members of the genera Azotobacter and Rhizobium are important because they:

 
 
 
 

137. Chemosynthetic bacteria are:

 
 
 
 

138. The science of study of bacteria is known as bacteriology. The name bacteria was first of all given by:

 
 
 
 

139. The nucleus of bacteria is:

 
 
 
 

140. Typhoid in man is caused by:

 
 
 
 

141. The DNA of E coli is:

 
 
 
 

142. Cyanobacteria, unlike other types of bacteria that photosynthesize and:

 
 
 
 

143. Bacteria are placed under:

 
 
 
 

144. Pasteur is famous for his:

 
 
 
 

145. The biological term used to describe two organisms living together and beneficial to each other is:

 
 
 
 

146. The process of transformation in bacteria does not require:

 
 
 
 

147. Circular DNA is seen in:

 
 
 
 

148. Most resistant spore in bacteria is:

 
 
 
 

149. Some bacteria cannot be killed easily because of:

 
 
 
 

150. In Molecular Biology, E coli has been used in studying:

 
 
 
 

151. The structure formed by the bacterial genome is generally called as:

 
 
 
 

152. Citrus canker is caused by:

 
 
 
 

153. Fertility of the soil is increased by:

 
 
 
 

154. Ethylene oxide is widely used to:

 
 
 
 

155. Bacteria which are highly spiral in shape are called:

 
 
 
 

156. Those bacteria designated microaerophilic are distinguished by their ability to grow: