Quiz_Monera

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

 
 
 
 

2. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

4. The smallest bacterium is:

 
 
 
 

5. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

7. Water-borne bacterial diseases are:

 
 
 
 

8. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

10. Economic importance of bacteria lies in their being:

 
 
 
 

11. The antibiotic is obtained from:

 
 
 
 

12. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

15. Germ theory of disease was proposed by:

 
 
 
 

16. To which country Antony van Leeuwenhoek belong?

 
 
 
 

17. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

20. Fertility of the soil is increased by:

 
 
 
 

21. Chemosynthetic bacteria are:

 
 
 
 

22. Botulism is a:

 
 
 
 

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

 
 
 
 

24. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

26. 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:

 
 
 
 

27. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

29. Circular DNA is seen in:

 
 
 
 

30. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

33. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

36. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

38. Pasteur is famous for his:

 
 
 
 

39. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

41. Pasteurized milk is:

 
 
 
 

42. Select the wrong statement:

 
 
 
 

43. Wine turns sour because of:

 
 
 
 

44. Some bacteria cannot be killed easily because of:

 
 
 
 

45. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

50. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

52. Nitrogen-fixing bacteria may be located:

 
 
 
 

53. Clostridium can:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

58. Acetobacter is useful in:

 
 
 
 

59. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

62. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

64. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

66. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

68. Bacteria are placed under:

 
 
 
 

69. E coli is a:

 
 
 
 

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

 
 
 
 

71. Which of the following statement is correct?

 
 
 
 

72. Which statement is wrong in regard to bacteria?

 
 
 
 

73. Botulinum toxin effects:

 
 
 
 

74. The similarity between cyanobacteria and bacteria:

 
 
 
 

75. Soil fertility is lost by the activities of:

 
 
 
 

76. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

78. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

80. 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:

 
 
 
 

81. Mycoplasma was discovered by:

 
 
 
 

82. An Hfr bacterium is one that contains:

 
 
 
 

83. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

85. Which is the nuclear material in bacteria?

 
 
 
 

86. Cell walls of Gram-positive bacteria contain:

 
 
 
 

87. Streptomycin is obtained from:

 
 
 
 

88. The root nodules of leguminous plants contain:

 
 
 
 

89. Which bacteria convert nitrate into nitrogen?

 
 
 
 

90. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

94. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

97. Which bacteria convert NO_ to elemental nitrogen?

 
 
 
 

98. Mycoplasma are:

 
 
 
 

99. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

101. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

103. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

107. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

109. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

111. Citrus canker is caused by:

 
 
 
 

112. Which organisms are the oldest life forms?

 
 
 
 

113. 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:

 
 
 
 

114. 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?

 
 
 
 

115. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

117. Milk is converted to curd by:

 
 
 
 

118. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

121. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

123. Mycoplasmas are not viruses in nature because:

 
 
 
 

124. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

127. Cocci types of bacteria are:

 
 
 
 

128. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

130. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

132. What are plasmids?

 
 
 
 

133. Gram stain is used to:

 
 
 
 

134. Methanogens belong to:

 
 
 
 

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

 
 
 
 

136. Mycoplasma contains:

 
 
 
 

137. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

139. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

142. Which of the following converts CO_ into carbohydrates?

 
 
 
 

143. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

145. 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?

 
 
 
 

146. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

147. Plasmids are:

 
 
 
 

148. Mycoplasma is different from bacteria due to:

 
 
 
 

149. Bacteria are considered to be plants because they:

 
 
 
 

150. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

151. Leprosy is caused by:

 
 
 
 

152. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

154. 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?

 
 
 
 

155. Triple antigen injection or vaccine are for:

 
 
 
 

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