Quiz_Monera

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

 
 
 
 

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

 
 
 
 

3. Which of the following converts CO_ into carbohydrates?

 
 
 
 

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

 
 
 
 

5. Mycoplasmas are not viruses in nature because:

 
 
 
 

6. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

8. Chemosynthetic bacteria are:

 
 
 
 

9. Typhoid in man is caused by:

 
 
 
 

10. Halophiles are the bacteria that require for growth:

 
 
 
 

11. 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:

 
 
 
 

12. What is the role of nitrifying bacteria?

 
 
 
 

13. Enteric bacteria are those bacteria that live:

 
 
 
 

14. Which statement is wrong in regard to bacteria?

 
 
 
 

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

 
 
 
 

16. Mycoplasma was discovered by:

 
 
 
 

17. Some diseases caused by bacteria are:

 
 
 
 

18. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

20. Circular DNA is seen in:

 
 
 
 

21. Plasmids are:

 
 
 
 

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

 
 
 
 

23. Soil fertility is lost by the activities of:

 
 
 
 

24. Bacteria were first discovered by:

 
 
 
 

25. Nitrifying bacteria play an important role by converting:

 
 
 
 

26. 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?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

30. Which organisms are the oldest life forms?

 
 
 
 

31. The antibiotic is obtained from:

 
 
 
 

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

 
 
 
 

33. Which of the following are absent in Mycoplasma?

 
 
 
 

34. The nucleus of bacteria is:

 
 
 
 

35. Which of the following statement is correct?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

39. Usually, bacteria reproduce by:

 
 
 
 

40. The root nodules of leguminous plants contain:

 
 
 
 

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

 
 
 
 

42. Gram stain is used to:

 
 
 
 

43. Germ theory of disease was proposed by:

 
 
 
 

44. Bacteria growing on synthetic medium are called:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

47. 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?

 
 
 
 

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

 
 
 
 

49. Which is the nuclear material in bacteria?

 
 
 
 

50. Citrus canker is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

55. Antibiotics cure the disease by:

 
 
 
 

56. 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?

 
 
 
 

57. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

58. Which bacteria convert NO_ to elemental nitrogen?

 
 
 
 

59. What are plasmids?

 
 
 
 

60. Milk is converted to curd by:

 
 
 
 

61. Water-borne bacterial diseases are:

 
 
 
 

62. Cocci types of bacteria are:

 
 
 
 

63. 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:

 
 
 
 

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

 
 
 
 

65. Botulism is a:

 
 
 
 

66. Some bacteria cannot be killed easily because of:

 
 
 
 

67. 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:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

70. To which country Antony van Leeuwenhoek belong?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

73. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

74. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

78. Triple antigen injection or vaccine are for:

 
 
 
 

79. Chemosynthetic bacteria are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

82. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

83. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

86. Nitrogen-fixing bacteria may be located:

 
 
 
 

87. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

89. Bacteria are found everywhere, except:

 
 
 
 

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

 
 
 
 

91. 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:

 
 
 
 

92. Bacteria which are spherical are called:

 
 
 
 

93. Which is not true for Escherichia coli?

 
 
 
 

94. Broad spectrum antibiotic is, which:

 
 
 
 

95. Fertility of the soil is increased by:

 
 
 
 

96. Wine turns sour because of:

 
 
 
 

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

 
 
 
 

98. Bacteria are placed under:

 
 
 
 

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

 
 
 
 

100. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

102. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

104. Pasteur is famous for his:

 
 
 
 

105. Streptomycin is obtained from:

 
 
 
 

106. Diphtheria is caused by:

 
 
 
 

107. Photosynthetic bacteria have:

 
 
 
 

108. Pasteurized milk is:

 
 
 
 

109. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

110. Bacteria are considered to be plants because they:

 
 
 
 

111. Mycoplasma are:

 
 
 
 

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

 
 
 
 

114. An Hfr bacterium is one that contains:

 
 
 
 

115. Most resistant spore in bacteria is:

 
 
 
 

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

 
 
 
 

117. Which bacteria convert nitrate into nitrogen?

 
 
 
 

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

 
 
 
 

119. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

122. Sometimes the bacterial cell is enclosed in:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

125. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

128. Photoautotrophic bacteria have:

 
 
 
 

129. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

132. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

136. The DNA of E coli is:

 
 
 
 

137. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

139. Methanogens belong to:

 
 
 
 

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

 
 
 
 

141. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

144. Mycoplasma is different from bacteria due to:

 
 
 
 

145. Botulinum toxin effects:

 
 
 
 

146. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

147. E coli is a:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

150. Acetobacter is useful in:

 
 
 
 

151. Clostridium can:

 
 
 
 

152. Streptomyces falls under:

 
 
 
 

153. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

156. Select the wrong statement: