Quiz_Monera

1. Botulism is a:

 
 
 
 

2. Bacteria which are spherical are called:

 
 
 
 

3. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

9. Cell walls of Gram-positive bacteria contain:

 
 
 
 

10. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

12. Ethylene oxide is widely used to:

 
 
 
 

13. Chemosynthetic bacteria are:

 
 
 
 

14. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

15. Mycoplasma are:

 
 
 
 

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

 
 
 
 

17. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

21. Nitrifying bacteria play an important role by converting:

 
 
 
 

22. The root nodules of leguminous plants contain:

 
 
 
 

23. 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:

 
 
 
 

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

 
 
 
 

25. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

28. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

30. The mode of nutrition of bacteria is usually:

 
 
 
 

31. Which statement is wrong in regard to bacteria?

 
 
 
 

32. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

34. Botulinum toxin effects:

 
 
 
 

35. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

38. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

40. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

42. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

44. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

47. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

49. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

52. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

56. An Hfr bacterium is one that contains:

 
 
 
 

57. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

58. Which is not true for Escherichia coli?

 
 
 
 

59. Wine turns sour because of:

 
 
 
 

60. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

62. Which of the following converts CO_ into carbohydrates?

 
 
 
 

63. Circular DNA is seen in:

 
 
 
 

64. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

66. Streptomyces falls under:

 
 
 
 

67. Some diseases caused by bacteria are:

 
 
 
 

68. Diphtheria is caused by:

 
 
 
 

69. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

72. Gram stain is used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

75. 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:

 
 
 
 

76. Bacteria are placed under:

 
 
 
 

77. 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?

 
 
 
 

78. The smallest bacterium is:

 
 
 
 

79. Photosynthetic bacteria have:

 
 
 
 

80. Antibiotics cure the disease by:

 
 
 
 

81. 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:

 
 
 
 

82. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

86. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

87. What is the role of nitrifying bacteria?

 
 
 
 

88. The similarity between cyanobacteria and bacteria:

 
 
 
 

89. Some bacteria cannot be killed easily because of:

 
 
 
 

90. Which of the following statement is correct?

 
 
 
 

91. 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?

 
 
 
 

92. Pneumonia is caused by:

 
 
 
 

93. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

97. 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:

 
 
 
 

98. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

101. Select the wrong statement:

 
 
 
 

102. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

107. Acetobacter is useful in:

 
 
 
 

108. Pasteurized milk is:

 
 
 
 

109. Methanogens belong to:

 
 
 
 

110. Which is not found in bacteria?

 
 
 
 

111. Clostridium can:

 
 
 
 

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

 
 
 
 

113. 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?

 
 
 
 

114. What are plasmids?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

117. Mycoplasma is different from bacteria due to:

 
 
 
 

118. Soil fertility is lost by the activities of:

 
 
 
 

119. The nucleus of bacteria is:

 
 
 
 

120. Which organisms are the oldest life forms?

 
 
 
 

121. Most resistant spore in bacteria is:

 
 
 
 

122. Mycoplasma contains:

 
 
 
 

123. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

125. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

127. Bacteria growing on synthetic medium are called:

 
 
 
 

128. Broad spectrum antibiotic is, which:

 
 
 
 

129. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

132. Economic importance of bacteria lies in their being:

 
 
 
 

133. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

136. Milk is converted to curd by:

 
 
 
 

137. Plasmids are:

 
 
 
 

138. Mycoplasma are sensitive to:

 
 
 
 

139. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

141. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

143. Which of the following are absent in Mycoplasma?

 
 
 
 

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

 
 
 
 

145. Enteric bacteria are those bacteria that live:

 
 
 
 

146. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

149. Triple antigen injection or vaccine are for:

 
 
 
 

150. The DNA of E coli is:

 
 
 
 

151. Fertility of the soil is increased by:

 
 
 
 

152. Which bacteria convert NO_ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

155. Nitrogen-fixing bacteria may be located:

 
 
 
 

156. The largest known bacterium is: