Quiz_Monera

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

 
 
 
 

2. 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?

 
 
 
 

3. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

6. Bacteria were first discovered by:

 
 
 
 

7. Clostridium can:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

10. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

12. Which organisms are the oldest life forms?

 
 
 
 

13. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

15. Cell walls of Gram-positive bacteria contain:

 
 
 
 

16. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

17. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

19. Streptomyces falls under:

 
 
 
 

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

 
 
 
 

21. Mycoplasma contains:

 
 
 
 

22. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

24. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

26. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

30. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

32. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

34. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

40. All archaebacteria lack:

 
 
 
 

41. Cocci types of bacteria are:

 
 
 
 

42. Which bacteria convert NO_ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

44. Sometimes the bacterial cell is enclosed in:

 
 
 
 

45. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

49. Little leaf disease of Brinjal is caused by:

 
 
 
 

50. Bacteria are considered to be plants because they:

 
 
 
 

51. Some diseases caused by bacteria are:

 
 
 
 

52. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

54. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

59. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

62. Some bacteria cannot be killed easily because of:

 
 
 
 

63. Mycoplasma is different from bacteria due to:

 
 
 
 

64. Which of the following converts CO_ into carbohydrates?

 
 
 
 

65. Select the wrong statement:

 
 
 
 

66. Acetobacter is useful in:

 
 
 
 

67. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

68. The smallest bacterium is:

 
 
 
 

69. To which country Antony van Leeuwenhoek belong?

 
 
 
 

70. 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:

 
 
 
 

71. 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:

 
 
 
 

72. Bacteria growing on synthetic medium are called:

 
 
 
 

73. Photosynthetic bacteria have:

 
 
 
 

74. Mycoplasma are sensitive to:

 
 
 
 

75. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

76. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

78. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

80. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

82. Usually, bacteria reproduce by:

 
 
 
 

83. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

86. Typhoid in man is caused by:

 
 
 
 

87. 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?

 
 
 
 

88. Water-borne bacterial diseases are:

 
 
 
 

89. Which is not true for Escherichia coli?

 
 
 
 

90. Soil fertility is lost by the activities of:

 
 
 
 

91. Pneumonia is caused by:

 
 
 
 

92. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

93. Ethylene oxide is widely used to:

 
 
 
 

94. Chemosynthetic bacteria are:

 
 
 
 

95. Circular DNA is seen in:

 
 
 
 

96. Which of the following are absent in Mycoplasma?

 
 
 
 

97. E coli is a:

 
 
 
 

98. 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:

 
 
 
 

99. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

100. Bacteria are found everywhere, except:

 
 
 
 

101. Bacteria which are spherical are called:

 
 
 
 

102. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

105. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

109. Citrus canker is caused by:

 
 
 
 

110. Triple antigen injection or vaccine are for:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

114. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

116. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

118. Botulism is a:

 
 
 
 

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

 
 
 
 

120. Halophiles are the bacteria that require for growth:

 
 
 
 

121. Fertility of the soil is increased by:

 
 
 
 

122. What is the role of nitrifying bacteria?

 
 
 
 

123. Photoautotrophic bacteria have:

 
 
 
 

124. Mycoplasma are:

 
 
 
 

125. Methanogens belong to:

 
 
 
 

126. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

128. What are plasmids?

 
 
 
 

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

 
 
 
 

130. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

132. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

137. Enteric bacteria are those bacteria that live:

 
 
 
 

138. Plasmids are:

 
 
 
 

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

 
 
 
 

140. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

142. Gram stain is used to:

 
 
 
 

143. Economic importance of bacteria lies in their being:

 
 
 
 

144. 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?

 
 
 
 

145. The similarity between cyanobacteria and bacteria:

 
 
 
 

146. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

149. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

151. The largest known bacterium is:

 
 
 
 

152. The nucleus of bacteria is:

 
 
 
 

153. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

155. Botulinum toxin effects:

 
 
 
 

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