Quiz_Monera

1. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

3. Mycoplasma are:

 
 
 
 

4. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

8. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

10. Which bacteria convert NO_ to elemental nitrogen?

 
 
 
 

11. 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?

 
 
 
 

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

 
 
 
 

13. Mycoplasmas are not viruses in nature because:

 
 
 
 

14. The root nodules of leguminous plants contain:

 
 
 
 

15. Triple antigen injection or vaccine are for:

 
 
 
 

16. Gram stain is used to:

 
 
 
 

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

 
 
 
 

18. Water-borne bacterial diseases are:

 
 
 
 

19. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

21. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

25. Most resistant spore in bacteria is:

 
 
 
 

26. Ethylene oxide is widely used to:

 
 
 
 

27. 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:

 
 
 
 

28. Citrus canker is caused by:

 
 
 
 

29. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

32. 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:

 
 
 
 

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

 
 
 
 

34. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

36. Sometimes the bacterial cell is enclosed in:

 
 
 
 

37. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

38. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

40. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

43. Plasmids are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

46. The largest known bacterium is:

 
 
 
 

47. 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:

 
 
 
 

48. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

50. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

51. Pasteurized milk is:

 
 
 
 

52. Which is the nuclear material in bacteria?

 
 
 
 

53. Botulism is a:

 
 
 
 

54. The similarity between cyanobacteria and bacteria:

 
 
 
 

55. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

58. Botulinum toxin effects:

 
 
 
 

59. Which of the following converts CO_ into carbohydrates?

 
 
 
 

60. Cell walls of Gram-positive bacteria contain:

 
 
 
 

61. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

64. The DNA of E coli is:

 
 
 
 

65. Germ theory of disease was proposed by:

 
 
 
 

66. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

68. Usually, bacteria reproduce by:

 
 
 
 

69. The smallest bacterium is:

 
 
 
 

70. Cocci types of bacteria are:

 
 
 
 

71. Streptomycin is obtained from:

 
 
 
 

72. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

75. Nitrifying bacteria play an important role by converting:

 
 
 
 

76. Which statement is wrong in regard to bacteria?

 
 
 
 

77. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

79. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

82. Select the wrong statement:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

85. Bacteria which are spherical are called:

 
 
 
 

86. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

89. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

92. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

94. The mode of nutrition of bacteria is usually:

 
 
 
 

95. Bacteria growing on synthetic medium are called:

 
 
 
 

96. Which bacteria convert nitrate into nitrogen?

 
 
 
 

97. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

100. Clostridium can:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

103. Mycoplasma is different from bacteria due to:

 
 
 
 

104. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

106. Some bacteria cannot be killed easily because of:

 
 
 
 

107. All archaebacteria lack:

 
 
 
 

108. Bacteria are found everywhere, except:

 
 
 
 

109. 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?

 
 
 
 

110. Mycoplasma contains:

 
 
 
 

111. The nucleus of bacteria is:

 
 
 
 

112. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

114. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

117. What are plasmids?

 
 
 
 

118. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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. Which disease is caused by the bacterium Treponema pallidum?

 
 
 
 

122. Halophiles are the bacteria that require for growth:

 
 
 
 

123. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

125. Acetobacter is useful in:

 
 
 
 

126. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

129. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

131. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

134. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

137. Mycoplasma was discovered by:

 
 
 
 

138. Bacteria were first discovered by:

 
 
 
 

139. Diphtheria is caused by:

 
 
 
 

140. Leprosy is caused by:

 
 
 
 

141. 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?

 
 
 
 

142. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

144. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

146. Photoautotrophic bacteria have:

 
 
 
 

147. Methanogens belong to:

 
 
 
 

148. What is the role of nitrifying bacteria?

 
 
 
 

149. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

153. The antibiotic is obtained from:

 
 
 
 

154. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

156. Pasteur is famous for his: