Quiz_Monera

1. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

4. Milk is converted to curd by:

 
 
 
 

5. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

7. Chemosynthetic bacteria are:

 
 
 
 

8. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

9. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

11. Mycoplasma are:

 
 
 
 

12. Which of the following are absent in Mycoplasma?

 
 
 
 

13. 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:

 
 
 
 

14. What are plasmids?

 
 
 
 

15. 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:

 
 
 
 

16. Select the wrong statement:

 
 
 
 

17. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

19. Bacteria are considered to be plants because they:

 
 
 
 

20. Nitrogen-fixing bacteria may be located:

 
 
 
 

21. Mycoplasma are sensitive to:

 
 
 
 

22. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

24. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

26. Chemosynthetic bacteria are:

 
 
 
 

27. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

32. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

37. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

39. Pneumonia is caused by:

 
 
 
 

40. The smallest bacterium is:

 
 
 
 

41. What is the role of nitrifying bacteria?

 
 
 
 

42. Triple antigen injection or vaccine are for:

 
 
 
 

43. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

46. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

48. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

51. Germ theory of disease was proposed by:

 
 
 
 

52. Soil fertility is lost by the activities of:

 
 
 
 

53. Which of the following statement is correct?

 
 
 
 

54. Some bacteria cannot be killed easily because of:

 
 
 
 

55. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

59. Pasteur is famous for his:

 
 
 
 

60. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

61. 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?

 
 
 
 

62. Cocci types of bacteria are:

 
 
 
 

63. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

66. Little leaf disease of Brinjal is caused by:

 
 
 
 

67. 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:

 
 
 
 

68. All archaebacteria lack:

 
 
 
 

69. Which bacteria convert NO_ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

71. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

72. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

75. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

77. Clostridium can:

 
 
 
 

78. Photosynthetic bacteria have:

 
 
 
 

79. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

82. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

84. Botulism is a:

 
 
 
 

85. Photoautotrophic bacteria have:

 
 
 
 

86. 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?

 
 
 
 

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

 
 
 
 

88. Bacteria are placed under:

 
 
 
 

89. Sometimes the bacterial cell is enclosed in:

 
 
 
 

90. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

94. The largest known bacterium is:

 
 
 
 

95. The DNA of E coli is:

 
 
 
 

96. To which country Antony van Leeuwenhoek belong?

 
 
 
 

97. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

98. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

101. Enteric bacteria are those bacteria that live:

 
 
 
 

102. Usually, bacteria reproduce by:

 
 
 
 

103. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

107. Mycoplasma is different from bacteria due to:

 
 
 
 

108. Wine turns sour because of:

 
 
 
 

109. Acetobacter is useful in:

 
 
 
 

110. Streptomycin is obtained from:

 
 
 
 

111. Bacteria growing on synthetic medium are called:

 
 
 
 

112. Plasmids are:

 
 
 
 

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

 
 
 
 

114. Nitrifying bacteria play an important role by converting:

 
 
 
 

115. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

117. Diphtheria is caused by:

 
 
 
 

118. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

124. The similarity between cyanobacteria and bacteria:

 
 
 
 

125. Most resistant spore in bacteria is:

 
 
 
 

126. 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?

 
 
 
 

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

 
 
 
 

128. The mode of nutrition of bacteria is usually:

 
 
 
 

129. 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?

 
 
 
 

130. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

132. Bacteria are found everywhere, except:

 
 
 
 

133. Methanogens belong to:

 
 
 
 

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

 
 
 
 

135. Which of the following converts CO_ into carbohydrates?

 
 
 
 

136. Mycoplasma contains:

 
 
 
 

137. Bacteria were first discovered by:

 
 
 
 

138. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

140. An Hfr bacterium is one that contains:

 
 
 
 

141. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

146. Some diseases caused by bacteria are:

 
 
 
 

147. Ethylene oxide is widely used to:

 
 
 
 

148. Which is the nuclear material in bacteria?

 
 
 
 

149. Halophiles are the bacteria that require for growth:

 
 
 
 

150. Gram stain is used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

155. Typhoid in man is caused by:

 
 
 
 

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