Quiz_Monera

1. Bacteria are considered to be plants because they:

 
 
 
 

2. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

4. Which bacteria convert NO_ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

6. Some bacteria cannot be killed easily because of:

 
 
 
 

7. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

13. 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:

 
 
 
 

14. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

16. Which bacteria convert nitrate into nitrogen?

 
 
 
 

17. Botulinum toxin effects:

 
 
 
 

18. Typhoid in man is caused by:

 
 
 
 

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

 
 
 
 

20. Cell walls of Gram-positive bacteria contain:

 
 
 
 

21. The smallest bacterium is:

 
 
 
 

22. Usually, bacteria reproduce by:

 
 
 
 

23. Mycoplasma contains:

 
 
 
 

24. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

27. Nitrifying bacteria play an important role by converting:

 
 
 
 

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

 
 
 
 

29. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

31. Milk is converted to curd by:

 
 
 
 

32. Wine turns sour because of:

 
 
 
 

33. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

35. Photosynthetic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

38. Mycoplasmas are not viruses in nature because:

 
 
 
 

39. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

41. Antibiotics cure the disease by:

 
 
 
 

42. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

44. Sometimes the bacterial cell is enclosed in:

 
 
 
 

45. What is the role of nitrifying bacteria?

 
 
 
 

46. 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?

 
 
 
 

47. Halophiles are the bacteria that require for growth:

 
 
 
 

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

 
 
 
 

49. Acetobacter is useful in:

 
 
 
 

50. Cocci types of bacteria are:

 
 
 
 

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

 
 
 
 

52. Methanogens belong to:

 
 
 
 

53. Triple antigen injection or vaccine are for:

 
 
 
 

54. Chemosynthetic bacteria are:

 
 
 
 

55. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

59. Streptomyces falls under:

 
 
 
 

60. Clostridium can:

 
 
 
 

61. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

63. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

66. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

68. Some diseases caused by bacteria are:

 
 
 
 

69. Economic importance of bacteria lies in their being:

 
 
 
 

70. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

74. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

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. Which is not true for Escherichia coli?

 
 
 
 

79. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

83. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

85. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

87. Which of the following converts CO_ into carbohydrates?

 
 
 
 

88. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

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

 
 
 
 

90. Bacteria growing on synthetic medium are called:

 
 
 
 

91. Streptomycin is obtained from:

 
 
 
 

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

 
 
 
 

93. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

96. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

99. Plasmids are:

 
 
 
 

100. Leprosy is caused by:

 
 
 
 

101. The antibiotic is obtained from:

 
 
 
 

102. Bacteria are placed under:

 
 
 
 

103. All archaebacteria lack:

 
 
 
 

104. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

106. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

108. What are plasmids?

 
 
 
 

109. Mycoplasma are sensitive to:

 
 
 
 

110. Fertility of the soil is increased by:

 
 
 
 

111. Gram stain is used to:

 
 
 
 

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

 
 
 
 

113. Bacteria were first discovered by:

 
 
 
 

114. Which organisms are the oldest life forms?

 
 
 
 

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

 
 
 
 

116. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

117. The root nodules of leguminous plants contain:

 
 
 
 

118. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

120. Chemosynthetic bacteria are:

 
 
 
 

121. Nitrogen-fixing bacteria may be located:

 
 
 
 

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

 
 
 
 

123. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

126. 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?

 
 
 
 

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

 
 
 
 

128. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

130. Which is not found in bacteria?

 
 
 
 

131. Mycoplasma are:

 
 
 
 

132. Select the wrong statement:

 
 
 
 

133. 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:

 
 
 
 

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

 
 
 
 

135. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

136. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

138. Which is the nuclear material in bacteria?

 
 
 
 

139. Pasteur is famous for his:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

142. Soil fertility is lost by the activities of:

 
 
 
 

143. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

145. Pasteurized milk is:

 
 
 
 

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

 
 
 
 

147. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

151. Which of the following are absent in Mycoplasma?

 
 
 
 

152. Photoautotrophic bacteria have:

 
 
 
 

153. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

155. Botulism is a:

 
 
 
 

156. Which statement is wrong in regard to bacteria?