Quiz_Monera

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

4. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

8. Some bacteria cannot be killed easily because of:

 
 
 
 

9. 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:

 
 
 
 

10. Botulism is a:

 
 
 
 

11. Acetobacter is useful in:

 
 
 
 

12. Bacteria growing on synthetic medium are called:

 
 
 
 

13. Mycoplasma is different from bacteria due to:

 
 
 
 

14. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

16. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

17. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

19. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

22. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

25. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

27. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

29. Bacteria are found everywhere, except:

 
 
 
 

30. Antibiotics cure the disease by:

 
 
 
 

31. Halophiles are the bacteria that require for growth:

 
 
 
 

32. Economic importance of bacteria lies in their being:

 
 
 
 

33. Streptomyces falls under:

 
 
 
 

34. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

36. Milk is converted to curd by:

 
 
 
 

37. 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:

 
 
 
 

38. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

40. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

41. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

44. Water-borne bacterial diseases are:

 
 
 
 

45. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

47. The DNA of E coli is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

50. Wine turns sour because of:

 
 
 
 

51. Circular DNA is seen in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

55. Pasteurized milk is:

 
 
 
 

56. Leprosy is caused by:

 
 
 
 

57. Bacteria are considered to be plants because they:

 
 
 
 

58. Pasteur is famous for his:

 
 
 
 

59. Typhoid in man is caused by:

 
 
 
 

60. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

65. Nitrifying bacteria play an important role by converting:

 
 
 
 

66. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

68. Which is the nuclear material in bacteria?

 
 
 
 

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

 
 
 
 

70. What is the role of nitrifying bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

73. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

75. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

76. Fertility of the soil is increased by:

 
 
 
 

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

 
 
 
 

78. Clostridium can:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

81. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

84. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

85. Which statement is wrong in regard to bacteria?

 
 
 
 

86. Triple antigen injection or vaccine are for:

 
 
 
 

87. Cocci types of bacteria are:

 
 
 
 

88. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

90. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

91. Which of the following converts CO_ into carbohydrates?

 
 
 
 

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

 
 
 
 

93. Which of the following are absent in Mycoplasma?

 
 
 
 

94. The smallest bacterium is:

 
 
 
 

95. Sometimes the bacterial cell is enclosed in:

 
 
 
 

96. Gram stain is used to:

 
 
 
 

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

 
 
 
 

98. To which country Antony van Leeuwenhoek belong?

 
 
 
 

99. Broad spectrum antibiotic is, which:

 
 
 
 

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

 
 
 
 

101. The antibiotic is obtained from:

 
 
 
 

102. Germ theory of disease was proposed by:

 
 
 
 

103. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

107. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

109. Plasmids are:

 
 
 
 

110. Nitrogen-fixing bacteria may be located:

 
 
 
 

111. Bacteria are placed under:

 
 
 
 

112. 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?

 
 
 
 

113. Mycoplasma was discovered by:

 
 
 
 

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

 
 
 
 

115. Enteric bacteria are those bacteria that live:

 
 
 
 

116. 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?

 
 
 
 

117. Some diseases caused by bacteria are:

 
 
 
 

118. Streptomycin is obtained from:

 
 
 
 

119. Mycoplasma are:

 
 
 
 

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

 
 
 
 

121. Diphtheria is caused by:

 
 
 
 

122. Select the wrong statement:

 
 
 
 

123. Cell walls of Gram-positive bacteria contain:

 
 
 
 

124. 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?

 
 
 
 

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

 
 
 
 

126. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

128. Soil fertility is lost by the activities of:

 
 
 
 

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

 
 
 
 

130. The similarity between cyanobacteria and bacteria:

 
 
 
 

131. E coli is a:

 
 
 
 

132. Chemosynthetic bacteria are:

 
 
 
 

133. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

136. 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:

 
 
 
 

137. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

139. Bacteria which are spherical are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

143. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

145. Bacteria were first discovered by:

 
 
 
 

146. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

148. Methanogens belong to:

 
 
 
 

149. Which bacteria convert NO_ to elemental nitrogen?

 
 
 
 

150. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

152. What are plasmids?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

155. Photosynthetic bacteria have:

 
 
 
 

156. Which organisms are the oldest life forms?