Quiz_Monera

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

 
 
 
 

2. 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?

 
 
 
 

3. Citrus canker is caused by:

 
 
 
 

4. Broad spectrum antibiotic is, which:

 
 
 
 

5. Mycoplasma are sensitive to:

 
 
 
 

6. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

9. 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?

 
 
 
 

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

 
 
 
 

11. Clostridium can:

 
 
 
 

12. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

14. Nitrogen-fixing bacteria may be located:

 
 
 
 

15. 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:

 
 
 
 

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

 
 
 
 

17. The antibiotic is obtained from:

 
 
 
 

18. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

21. Which bacteria convert nitrate into nitrogen?

 
 
 
 

22. Select the wrong statement:

 
 
 
 

23. Water-borne bacterial diseases are:

 
 
 
 

24. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

26. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

28. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

31. The smallest bacterium is:

 
 
 
 

32. Cell walls of Gram-positive bacteria contain:

 
 
 
 

33. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

34. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

36. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

38. Triple antigen injection or vaccine are for:

 
 
 
 

39. 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:

 
 
 
 

40. Streptomycin is obtained from:

 
 
 
 

41. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

43. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

45. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

47. Some diseases caused by bacteria are:

 
 
 
 

48. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

51. Botulism is a:

 
 
 
 

52. Which is the nuclear material in bacteria?

 
 
 
 

53. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

55. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

57. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

59. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

62. Nitrifying bacteria play an important role by converting:

 
 
 
 

63. Ethylene oxide is widely used to:

 
 
 
 

64. Sometimes the bacterial cell is enclosed in:

 
 
 
 

65. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

68. E coli is a:

 
 
 
 

69. The nucleus of bacteria is:

 
 
 
 

70. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

71. Bacteria growing on synthetic medium are called:

 
 
 
 

72. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

74. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

79. Chemosynthetic bacteria are:

 
 
 
 

80. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

82. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

85. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

87. Which is not true for Escherichia coli?

 
 
 
 

88. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

90. Mycoplasmas are not viruses in nature because:

 
 
 
 

91. Pneumonia is caused by:

 
 
 
 

92. Mycoplasma contains:

 
 
 
 

93. Pasteurized milk is:

 
 
 
 

94. Fertility of the soil is increased by:

 
 
 
 

95. Mycoplasma is different from bacteria due to:

 
 
 
 

96. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

99. The mode of nutrition of bacteria is usually:

 
 
 
 

100. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

102. 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:

 
 
 
 

103. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

106. Which organisms are the oldest life forms?

 
 
 
 

107. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

111. Photosynthetic bacteria have:

 
 
 
 

112. The root nodules of leguminous plants contain:

 
 
 
 

113. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

116. Bacteria are placed under:

 
 
 
 

117. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

120. 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?

 
 
 
 

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

 
 
 
 

122. Plasmids are:

 
 
 
 

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

 
 
 
 

124. Which bacteria convert NO_ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

126. 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:

 
 
 
 

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

 
 
 
 

128. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

131. Gram stain is used to:

 
 
 
 

132. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

134. Pasteur is famous for his:

 
 
 
 

135. Most resistant spore in bacteria is:

 
 
 
 

136. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

138. Bacteria which are spherical are called:

 
 
 
 

139. What are plasmids?

 
 
 
 

140. Halophiles are the bacteria that require for growth:

 
 
 
 

141. Mycoplasma are:

 
 
 
 

142. Soil fertility is lost by the activities of:

 
 
 
 

143. Which of the following converts CO_ into carbohydrates?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

146. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

148. 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?

 
 
 
 

149. Which of the following statement is correct?

 
 
 
 

150. Methanogens belong to:

 
 
 
 

151. Some bacteria cannot be killed easily because of:

 
 
 
 

152. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

156. Wine turns sour because of: