Quiz_Monera

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

 
 
 
 

2. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

4. Fertility of the soil is increased by:

 
 
 
 

5. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

7. Some bacteria cannot be killed easily because of:

 
 
 
 

8. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

10. 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:

 
 
 
 

11. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

12. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

14. Halophiles are the bacteria that require for growth:

 
 
 
 

15. Which bacteria convert NO_ to elemental nitrogen?

 
 
 
 

16. Little leaf disease of Brinjal is caused by:

 
 
 
 

17. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

21. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

22. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

24. The DNA of E coli is:

 
 
 
 

25. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

27. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

29. Chemosynthetic bacteria are:

 
 
 
 

30. Clostridium can:

 
 
 
 

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

 
 
 
 

32. Typhoid in man is caused by:

 
 
 
 

33. Which statement is wrong in regard to bacteria?

 
 
 
 

34. Acetobacter is useful in:

 
 
 
 

35. Nitrifying bacteria play an important role by converting:

 
 
 
 

36. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

39. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

40. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

43. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

45. Sometimes the bacterial cell is enclosed in:

 
 
 
 

46. Which of the following statement is correct?

 
 
 
 

47. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

49. Gram stain is used to:

 
 
 
 

50. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

52. Which is not true for Escherichia coli?

 
 
 
 

53. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

55. Which of the following converts CO_ into carbohydrates?

 
 
 
 

56. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

58. Pneumonia is caused by:

 
 
 
 

59. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

61. Nitrogen-fixing bacteria may be located:

 
 
 
 

62. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

64. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

67. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

70. 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?

 
 
 
 

71. Streptomycin is obtained from:

 
 
 
 

72. Bacteria which are spherical are called:

 
 
 
 

73. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

75. Milk is converted to curd by:

 
 
 
 

76. 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:

 
 
 
 

77. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

80. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

82. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

85. What are plasmids?

 
 
 
 

86. E coli is a:

 
 
 
 

87. Bacteria growing on synthetic medium are called:

 
 
 
 

88. Most resistant spore in bacteria is:

 
 
 
 

89. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

95. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

97. Ethylene oxide is widely used to:

 
 
 
 

98. Some diseases caused by bacteria are:

 
 
 
 

99. Which is not found in bacteria?

 
 
 
 

100. Enteric bacteria are those bacteria that live:

 
 
 
 

101. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

104. 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?

 
 
 
 

105. The root nodules of leguminous plants contain:

 
 
 
 

106. 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:

 
 
 
 

107. The similarity between cyanobacteria and bacteria:

 
 
 
 

108. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

110. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

113. Photosynthetic bacteria have:

 
 
 
 

114. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

116. Broad spectrum antibiotic is, which:

 
 
 
 

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. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

121. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

123. Bacteria are placed under:

 
 
 
 

124. Diphtheria is caused by:

 
 
 
 

125. Plasmids are:

 
 
 
 

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

 
 
 
 

127. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

132. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

135. Circular DNA is seen in:

 
 
 
 

136. Mycoplasma are:

 
 
 
 

137. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

140. An Hfr bacterium is one that contains:

 
 
 
 

141. Botulism is a:

 
 
 
 

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

 
 
 
 

143. Bacteria are found everywhere, except:

 
 
 
 

144. Methanogens belong to:

 
 
 
 

145. Select the wrong statement:

 
 
 
 

146. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

148. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

150. Mycoplasma is different from bacteria due to:

 
 
 
 

151. 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?

 
 
 
 

152. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

154. Cocci types of bacteria are:

 
 
 
 

155. The mode of nutrition of bacteria is usually:

 
 
 
 

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