Quiz_Monera

1. Which bacteria convert NO_ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

5. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

7. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

9. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

11. Cell walls of Gram-positive bacteria contain:

 
 
 
 

12. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

15. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

17. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

20. The similarity between cyanobacteria and bacteria:

 
 
 
 

21. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

24. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

27. Streptomyces falls under:

 
 
 
 

28. Botulism is a:

 
 
 
 

29. 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:

 
 
 
 

30. Enteric bacteria are those bacteria that live:

 
 
 
 

31. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

33. Mycoplasma contains:

 
 
 
 

34. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

37. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

40. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

43. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

46. Which is the nuclear material in bacteria?

 
 
 
 

47. Which of the following statement is correct?

 
 
 
 

48. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

51. To which country Antony van Leeuwenhoek belong?

 
 
 
 

52. Cocci types of bacteria are:

 
 
 
 

53. Citrus canker is caused by:

 
 
 
 

54. An Hfr bacterium is one that contains:

 
 
 
 

55. Triple antigen injection or vaccine are for:

 
 
 
 

56. 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?

 
 
 
 

57. The DNA of E coli is:

 
 
 
 

58. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

60. 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?

 
 
 
 

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

 
 
 
 

62. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

65. Which of the following converts CO_ into carbohydrates?

 
 
 
 

66. Bacteria are found everywhere, except:

 
 
 
 

67. Broad spectrum antibiotic is, which:

 
 
 
 

68. Milk is converted to curd by:

 
 
 
 

69. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

71. The largest known bacterium is:

 
 
 
 

72. Fertility of the soil is increased by:

 
 
 
 

73. 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?

 
 
 
 

74. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

77. Halophiles are the bacteria that require for growth:

 
 
 
 

78. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

80. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

82. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

85. The root nodules of leguminous plants contain:

 
 
 
 

86. Gram stain is used to:

 
 
 
 

87. Little leaf disease of Brinjal is caused by:

 
 
 
 

88. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

91. Mycoplasma was discovered by:

 
 
 
 

92. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

93. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

97. Nitrogen-fixing bacteria may be located:

 
 
 
 

98. Which organisms are the oldest life forms?

 
 
 
 

99. Clostridium can:

 
 
 
 

100. Mycoplasma is different from bacteria due to:

 
 
 
 

101. Mycoplasma are:

 
 
 
 

102. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

104. Select the wrong statement:

 
 
 
 

105. What are plasmids?

 
 
 
 

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

 
 
 
 

107. Acetobacter is useful in:

 
 
 
 

108. All archaebacteria lack:

 
 
 
 

109. Botulinum toxin effects:

 
 
 
 

110. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

112. Nitrifying bacteria play an important role by converting:

 
 
 
 

113. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

116. Streptomycin is obtained from:

 
 
 
 

117. Photoautotrophic bacteria have:

 
 
 
 

118. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

120. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

122. Which statement is wrong in regard to bacteria?

 
 
 
 

123. Germ theory of disease was proposed by:

 
 
 
 

124. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

125. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

127. Sometimes the bacterial cell is enclosed in:

 
 
 
 

128. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

130. Most resistant spore in bacteria is:

 
 
 
 

131. The antibiotic is obtained from:

 
 
 
 

132. 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:

 
 
 
 

133. 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:

 
 
 
 

134. Bacteria are considered to be plants because they:

 
 
 
 

135. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

139. Bacteria were first discovered by:

 
 
 
 

140. Which is not found in bacteria?

 
 
 
 

141. Some diseases caused by bacteria are:

 
 
 
 

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

 
 
 
 

143. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

146. Plasmids are:

 
 
 
 

147. Leprosy is caused by:

 
 
 
 

148. Some bacteria cannot be killed easily because of:

 
 
 
 

149. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

152. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

156. Methanogens belong to: