Quiz_Monera

1. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

3. Some bacteria cannot be killed easily because of:

 
 
 
 

4. Citrus canker is caused by:

 
 
 
 

5. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

7. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

9. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

10. Broad spectrum antibiotic is, which:

 
 
 
 

11. Cocci types of bacteria are:

 
 
 
 

12. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

14. What are plasmids?

 
 
 
 

15. Sometimes the bacterial cell is enclosed in:

 
 
 
 

16. Which is not true for Escherichia coli?

 
 
 
 

17. Select the wrong statement:

 
 
 
 

18. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

20. Clostridium can:

 
 
 
 

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

 
 
 
 

22. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

24. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

27. Little leaf disease of Brinjal is caused by:

 
 
 
 

28. Bacteria growing on synthetic medium are called:

 
 
 
 

29. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

31. Some diseases caused by bacteria are:

 
 
 
 

32. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

33. The nucleus of bacteria is:

 
 
 
 

34. Triple antigen injection or vaccine are for:

 
 
 
 

35. All archaebacteria lack:

 
 
 
 

36. Which of the following converts CO_ into carbohydrates?

 
 
 
 

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

 
 
 
 

38. Mycoplasma are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

41. 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?

 
 
 
 

42. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

44. 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:

 
 
 
 

45. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

47. Botulism is a:

 
 
 
 

48. Circular DNA is seen in:

 
 
 
 

49. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

52. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

54. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

55. 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:

 
 
 
 

56. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

59. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

62. Antibiotics cure the disease by:

 
 
 
 

63. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

69. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

73. Photosynthetic bacteria have:

 
 
 
 

74. The largest known bacterium is:

 
 
 
 

75. Which bacteria convert nitrate into nitrogen?

 
 
 
 

76. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

80. 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:

 
 
 
 

81. Halophiles are the bacteria that require for growth:

 
 
 
 

82. 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?

 
 
 
 

83. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

86. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

88. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

91. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

93. Which bacteria convert NO_ to elemental nitrogen?

 
 
 
 

94. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

96. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

99. Ethylene oxide is widely used to:

 
 
 
 

100. Which organisms are the oldest life forms?

 
 
 
 

101. Plasmids are:

 
 
 
 

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

 
 
 
 

103. Gram stain is used to:

 
 
 
 

104. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

105. 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:

 
 
 
 

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

 
 
 
 

107. Bacteria were first discovered by:

 
 
 
 

108. Cell walls of Gram-positive bacteria contain:

 
 
 
 

109. Methanogens belong to:

 
 
 
 

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

 
 
 
 

111. The smallest bacterium is:

 
 
 
 

112. Pneumonia is caused by:

 
 
 
 

113. Botulinum toxin effects:

 
 
 
 

114. E coli is a:

 
 
 
 

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

 
 
 
 

116. Streptomyces falls under:

 
 
 
 

117. 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?

 
 
 
 

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

 
 
 
 

119. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

122. Bacteria are considered to be plants because they:

 
 
 
 

123. Water-borne bacterial diseases are:

 
 
 
 

124. Usually, bacteria reproduce by:

 
 
 
 

125. Which of the following are absent in Mycoplasma?

 
 
 
 

126. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

128. 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?

 
 
 
 

129. Mycoplasma was discovered by:

 
 
 
 

130. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

133. Diphtheria is caused by:

 
 
 
 

134. Photoautotrophic bacteria have:

 
 
 
 

135. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

137. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

139. Mycoplasma are sensitive to:

 
 
 
 

140. Mycoplasmas are not viruses in nature because:

 
 
 
 

141. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

145. Typhoid in man is caused by:

 
 
 
 

146. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

147. Germ theory of disease was proposed by:

 
 
 
 

148. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

153. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

155. What is the role of nitrifying bacteria?

 
 
 
 

156. Enteric bacteria are those bacteria that live: