Quiz_Monera

1. Methanogens belong to:

 
 
 
 

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

 
 
 
 

3. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

7. To which country Antony van Leeuwenhoek belong?

 
 
 
 

8. 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:

 
 
 
 

9. Cell walls of Gram-positive bacteria contain:

 
 
 
 

10. Chemosynthetic bacteria are:

 
 
 
 

11. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

13. Circular DNA is seen in:

 
 
 
 

14. Mycoplasma was discovered by:

 
 
 
 

15. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

17. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

18. Germ theory of disease was proposed by:

 
 
 
 

19. Soil fertility is lost by the activities of:

 
 
 
 

20. 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?

 
 
 
 

21. Bacteria are considered to be plants because they:

 
 
 
 

22. 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?

 
 
 
 

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

 
 
 
 

24. Wine turns sour because of:

 
 
 
 

25. Bacteria are found everywhere, except:

 
 
 
 

26. Cocci types of bacteria are:

 
 
 
 

27. Triple antigen injection or vaccine are for:

 
 
 
 

28. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

30. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

32. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

35. Which of the following are absent in Mycoplasma?

 
 
 
 

36. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

39. Which is the nuclear material in bacteria?

 
 
 
 

40. Mycoplasma are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

43. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

46. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

49. Nitrogen-fixing bacteria may be located:

 
 
 
 

50. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

53. Enteric bacteria are those bacteria that live:

 
 
 
 

54. Acetobacter is useful in:

 
 
 
 

55. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

58. 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?

 
 
 
 

59. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

61. Which statement is wrong in regard to bacteria?

 
 
 
 

62. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

65. What are plasmids?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

68. The nucleus of bacteria is:

 
 
 
 

69. The similarity between cyanobacteria and bacteria:

 
 
 
 

70. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

72. Gram stain is used to:

 
 
 
 

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

 
 
 
 

74. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

75. Photoautotrophic bacteria have:

 
 
 
 

76. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

78. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

79. Bacteria are placed under:

 
 
 
 

80. Which of the following statement is correct?

 
 
 
 

81. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

83. Photosynthetic bacteria have:

 
 
 
 

84. 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:

 
 
 
 

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

 
 
 
 

86. Which of the following converts CO_ into carbohydrates?

 
 
 
 

87. Leprosy is caused by:

 
 
 
 

88. Clostridium can:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

91. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

94. Mycoplasma are sensitive to:

 
 
 
 

95. The root nodules of leguminous plants contain:

 
 
 
 

96. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

98. Halophiles are the bacteria that require for growth:

 
 
 
 

99. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

101. E coli is a:

 
 
 
 

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

 
 
 
 

103. 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:

 
 
 
 

104. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

107. Which bacteria convert NO_ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

109. Some bacteria cannot be killed easily because of:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

112. Some diseases caused by bacteria are:

 
 
 
 

113. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

118. Plasmids are:

 
 
 
 

119. Most resistant spore in bacteria is:

 
 
 
 

120. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

122. All archaebacteria lack:

 
 
 
 

123. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

126. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

128. Antibiotics cure the disease by:

 
 
 
 

129. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

130. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

133. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

135. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

138. Broad spectrum antibiotic is, which:

 
 
 
 

139. Pasteurized milk is:

 
 
 
 

140. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

142. Little leaf disease of Brinjal is caused by:

 
 
 
 

143. Botulism is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

146. Pasteur is famous for his:

 
 
 
 

147. Which bacteria convert nitrate into nitrogen?

 
 
 
 

148. Citrus canker is caused by:

 
 
 
 

149. Bacteria which are spherical are called:

 
 
 
 

150. Chemosynthetic bacteria are:

 
 
 
 

151. Which is not true for Escherichia coli?

 
 
 
 

152. Mycoplasma is different from bacteria due to:

 
 
 
 

153. Select the wrong statement:

 
 
 
 

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

 
 
 
 

155. 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:

 
 
 
 

156. Ethylene oxide is widely used to: