Quiz_Monera

1. 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:

 
 
 
 

2. Most resistant spore in bacteria is:

 
 
 
 

3. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

6. Halophiles are the bacteria that require for growth:

 
 
 
 

7. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

9. The largest known bacterium is:

 
 
 
 

10. What are plasmids?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

13. Clostridium can:

 
 
 
 

14. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

17. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

19. Sometimes the bacterial cell is enclosed in:

 
 
 
 

20. 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?

 
 
 
 

21. Mycoplasma was discovered by:

 
 
 
 

22. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

26. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

28. 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:

 
 
 
 

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

 
 
 
 

30. All archaebacteria lack:

 
 
 
 

31. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

34. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

37. Which of the following converts CO_ into carbohydrates?

 
 
 
 

38. Bacteria are considered to be plants because they:

 
 
 
 

39. Nitrifying bacteria play an important role by converting:

 
 
 
 

40. Botulinum toxin effects:

 
 
 
 

41. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

43. Mycoplasma is different from bacteria due to:

 
 
 
 

44. Bacteria are found everywhere, except:

 
 
 
 

45. The nucleus of bacteria is:

 
 
 
 

46. Select the wrong statement:

 
 
 
 

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

 
 
 
 

48. Which bacteria convert NO_ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

50. Cocci types of bacteria are:

 
 
 
 

51. Some bacteria cannot be killed easily because of:

 
 
 
 

52. Enteric bacteria are those bacteria that live:

 
 
 
 

53. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

59. E coli is a:

 
 
 
 

60. Mycoplasma contains:

 
 
 
 

61. Bacteria are placed under:

 
 
 
 

62. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

65. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

67. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

69. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

72. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

75. Economic importance of bacteria lies in their being:

 
 
 
 

76. Methanogens belong to:

 
 
 
 

77. Some diseases caused by bacteria are:

 
 
 
 

78. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

80. 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?

 
 
 
 

81. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

87. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

90. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

92. Leprosy is caused by:

 
 
 
 

93. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

95. 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?

 
 
 
 

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

 
 
 
 

97. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

100. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

102. Soil fertility is lost by the activities of:

 
 
 
 

103. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

105. Pasteur is famous for his:

 
 
 
 

106. Which of the following are absent in Mycoplasma?

 
 
 
 

107. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

110. Gram stain is used to:

 
 
 
 

111. What is the role of nitrifying bacteria?

 
 
 
 

112. Pneumonia is caused by:

 
 
 
 

113. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

116. Mycoplasma are sensitive to:

 
 
 
 

117. Photosynthetic bacteria have:

 
 
 
 

118. Bacteria were first discovered by:

 
 
 
 

119. To which country Antony van Leeuwenhoek belong?

 
 
 
 

120. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

122. Mycoplasma are:

 
 
 
 

123. Plasmids are:

 
 
 
 

124. Wine turns sour because of:

 
 
 
 

125. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

127. The similarity between cyanobacteria and bacteria:

 
 
 
 

128. Which bacteria convert nitrate into nitrogen?

 
 
 
 

129. Triple antigen injection or vaccine are for:

 
 
 
 

130. Acetobacter is useful in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

133. Which organisms are the oldest life forms?

 
 
 
 

134. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

136. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

139. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

141. Typhoid in man is caused by:

 
 
 
 

142. Bacteria which are spherical are called:

 
 
 
 

143. The mode of nutrition of bacteria is usually:

 
 
 
 

144. Which of the following statement is correct?

 
 
 
 

145. 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:

 
 
 
 

146. Broad spectrum antibiotic is, which:

 
 
 
 

147. Chemosynthetic bacteria are:

 
 
 
 

148. Which is the nuclear material in bacteria?

 
 
 
 

149. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

152. Photoautotrophic bacteria have:

 
 
 
 

153. Cell walls of Gram-positive bacteria contain:

 
 
 
 

154. Botulism is a:

 
 
 
 

155. Antibiotics cure the disease by:

 
 
 
 

156. 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: