Quiz_Monera

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

 
 
 
 

2. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

4. The mode of nutrition of bacteria is usually:

 
 
 
 

5. Which is the nuclear material in bacteria?

 
 
 
 

6. Soil fertility is lost by the activities of:

 
 
 
 

7. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

10. Chemosynthetic bacteria are:

 
 
 
 

11. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

15. Streptomycin is obtained from:

 
 
 
 

16. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

17. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

19. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

21. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

22. Germ theory of disease was proposed by:

 
 
 
 

23. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

25. Plasmids are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

29. Botulism is a:

 
 
 
 

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

 
 
 
 

31. Botulinum toxin effects:

 
 
 
 

32. Typhoid in man is caused by:

 
 
 
 

33. Broad spectrum antibiotic is, which:

 
 
 
 

34. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

36. Nitrifying bacteria play an important role by converting:

 
 
 
 

37. Clostridium can:

 
 
 
 

38. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

40. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

42. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

47. E coli is a:

 
 
 
 

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

 
 
 
 

49. Antibiotics cure the disease by:

 
 
 
 

50. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

52. 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?

 
 
 
 

53. The largest known bacterium is:

 
 
 
 

54. Ethylene oxide is widely used to:

 
 
 
 

55. Which bacteria convert nitrate into nitrogen?

 
 
 
 

56. What is the role of nitrifying bacteria?

 
 
 
 

57. Gram stain is used to:

 
 
 
 

58. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

60. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

62. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

63. Cell walls of Gram-positive bacteria contain:

 
 
 
 

64. Select the wrong statement:

 
 
 
 

65. 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?

 
 
 
 

66. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

68. Which of the following are absent in Mycoplasma?

 
 
 
 

69. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

71. Circular DNA is seen in:

 
 
 
 

72. Economic importance of bacteria lies in their being:

 
 
 
 

73. Pasteurized milk is:

 
 
 
 

74. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

77. Photosynthetic bacteria have:

 
 
 
 

78. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

80. 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?

 
 
 
 

81. Leprosy is caused by:

 
 
 
 

82. Triple antigen injection or vaccine are for:

 
 
 
 

83. Bacteria growing on synthetic medium are called:

 
 
 
 

84. Mycoplasma are sensitive to:

 
 
 
 

85. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

88. Bacteria are placed under:

 
 
 
 

89. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

93. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

95. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

96. Mycoplasma contains:

 
 
 
 

97. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

99. Wine turns sour because of:

 
 
 
 

100. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

102. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

105. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

109. Bacteria were first discovered by:

 
 
 
 

110. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

112. Which of the following converts CO_ into carbohydrates?

 
 
 
 

113. Which of the following statement is correct?

 
 
 
 

114. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

116. Mycoplasmas are not viruses in nature because:

 
 
 
 

117. Nitrogen-fixing bacteria may be located:

 
 
 
 

118. Which is not true for Escherichia coli?

 
 
 
 

119. 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:

 
 
 
 

120. Enteric bacteria are those bacteria that live:

 
 
 
 

121. Photoautotrophic bacteria have:

 
 
 
 

122. Mycoplasma are:

 
 
 
 

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

 
 
 
 

124. Methanogens belong to:

 
 
 
 

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

 
 
 
 

126. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

128. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

132. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

134. 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?

 
 
 
 

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

 
 
 
 

136. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

139. The DNA of E coli is:

 
 
 
 

140. Streptomyces falls under:

 
 
 
 

141. Usually, bacteria reproduce by:

 
 
 
 

142. 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:

 
 
 
 

143. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

145. Which bacteria convert NO_ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

147. Little leaf disease of Brinjal is caused by:

 
 
 
 

148. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

150. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

152. What are plasmids?

 
 
 
 

153. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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