Quiz_Monera

1. Bacteria are considered to be plants because they:

 
 
 
 

2. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

6. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

8. Which organisms are the oldest life forms?

 
 
 
 

9. Pasteur is famous for his:

 
 
 
 

10. Nitrogen-fixing bacteria may be located:

 
 
 
 

11. Which bacteria convert nitrate into nitrogen?

 
 
 
 

12. Most resistant spore in bacteria is:

 
 
 
 

13. Cocci types of bacteria are:

 
 
 
 

14. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

15. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

18. To which country Antony van Leeuwenhoek belong?

 
 
 
 

19. Little leaf disease of Brinjal is caused by:

 
 
 
 

20. E coli is a:

 
 
 
 

21. The DNA of E coli is:

 
 
 
 

22. Streptomyces falls under:

 
 
 
 

23. Sometimes the bacterial cell is enclosed in:

 
 
 
 

24. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

28. 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:

 
 
 
 

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

 
 
 
 

30. Nitrifying bacteria play an important role by converting:

 
 
 
 

31. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

33. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

37. Gram stain is used to:

 
 
 
 

38. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

40. The antibiotic is obtained from:

 
 
 
 

41. The root nodules of leguminous plants contain:

 
 
 
 

42. The mode of nutrition of bacteria is usually:

 
 
 
 

43. Bacteria which are spherical are called:

 
 
 
 

44. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

47. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

54. Economic importance of bacteria lies in their being:

 
 
 
 

55. What are plasmids?

 
 
 
 

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

 
 
 
 

57. Mycoplasma was discovered by:

 
 
 
 

58. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

61. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

64. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

66. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

68. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

69. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

70. Clostridium can:

 
 
 
 

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

 
 
 
 

72. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

74. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

76. What is the role of nitrifying bacteria?

 
 
 
 

77. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

80. Mycoplasma are sensitive to:

 
 
 
 

81. All archaebacteria lack:

 
 
 
 

82. Mycoplasma are:

 
 
 
 

83. Germ theory of disease was proposed by:

 
 
 
 

84. Which of the following converts CO_ into carbohydrates?

 
 
 
 

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

 
 
 
 

86. 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?

 
 
 
 

87. 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?

 
 
 
 

88. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

89. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

92. Bacteria are found everywhere, except:

 
 
 
 

93. The similarity between cyanobacteria and bacteria:

 
 
 
 

94. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

98. Milk is converted to curd by:

 
 
 
 

99. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

101. 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?

 
 
 
 

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

 
 
 
 

103. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

108. Methanogens belong to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

111. 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:

 
 
 
 

112. Select the wrong statement:

 
 
 
 

113. 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:

 
 
 
 

114. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

117. Which of the following statement is correct?

 
 
 
 

118. Plasmids are:

 
 
 
 

119. Some bacteria cannot be killed easily because of:

 
 
 
 

120. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

122. Which is not found in bacteria?

 
 
 
 

123. 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:

 
 
 
 

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

 
 
 
 

125. Chemosynthetic bacteria are:

 
 
 
 

126. Usually, bacteria reproduce by:

 
 
 
 

127. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

129. 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?

 
 
 
 

130. Which bacteria convert NO_ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

133. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

135. Some diseases caused by bacteria are:

 
 
 
 

136. Botulism is a:

 
 
 
 

137. Citrus canker is caused by:

 
 
 
 

138. Streptomycin is obtained from:

 
 
 
 

139. Chemosynthetic bacteria are:

 
 
 
 

140. Pasteurized milk is:

 
 
 
 

141. Leprosy is caused by:

 
 
 
 

142. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

144. Cell walls of Gram-positive bacteria contain:

 
 
 
 

145. Soil fertility is lost by the activities of:

 
 
 
 

146. Which is not true for Escherichia coli?

 
 
 
 

147. Pneumonia is caused by:

 
 
 
 

148. Broad spectrum antibiotic is, which:

 
 
 
 

149. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

152. Bacteria are placed under:

 
 
 
 

153. Bacteria were first discovered by:

 
 
 
 

154. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

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