Quiz_Monera

1. Halophiles are the bacteria that require for growth:

 
 
 
 

2. Mycoplasmas are not viruses in nature because:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

5. The antibiotic is obtained from:

 
 
 
 

6. All archaebacteria lack:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

11. Which of the following are absent in Mycoplasma?

 
 
 
 

12. Circular DNA is seen in:

 
 
 
 

13. Triple antigen injection or vaccine are for:

 
 
 
 

14. Which of the following converts CO_ into carbohydrates?

 
 
 
 

15. To which country Antony van Leeuwenhoek belong?

 
 
 
 

16. Botulism is a:

 
 
 
 

17. In nitrification, Nitrosomonas bacteria converts:

 
 
 
 

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

 
 
 
 

19. Streptomyces falls under:

 
 
 
 

20. 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:

 
 
 
 

21. Which statement is wrong in regard to bacteria?

 
 
 
 

22. The similarity between cyanobacteria and bacteria:

 
 
 
 

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

 
 
 
 

24. Botulinum toxin effects:

 
 
 
 

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

 
 
 
 

26. Methanogens belong to:

 
 
 
 

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

 
 
 
 

28. 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?

 
 
 
 

29. Bacteria growing on synthetic medium are called:

 
 
 
 

30. What is the role of nitrifying bacteria?

 
 
 
 

31. Cocci types of bacteria are:

 
 
 
 

32. Gram stain is used to:

 
 
 
 

33. Enteric bacteria are those bacteria that live:

 
 
 
 

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

 
 
 
 

35. Mycoplasma are:

 
 
 
 

36. Diphtheria is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

39. Nitrifying bacteria play an important role by converting:

 
 
 
 

40. The nucleus of bacteria is:

 
 
 
 

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

 
 
 
 

42. E coli is a:

 
 
 
 

43. Chemosynthetic bacteria are:

 
 
 
 

44. Chemosynthetic bacteria are:

 
 
 
 

45. Which bacteria convert nitrate into nitrogen?

 
 
 
 

46. Mycoplasma contains:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

51. The root nodules of leguminous plants contain:

 
 
 
 

52. Chemoautotrophic nitrifying bacteria are:

 
 
 
 

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

 
 
 
 

54. An Hfr bacterium is one that contains:

 
 
 
 

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

 
 
 
 

56. What are plasmids?

 
 
 
 

57. Commonest mode of asexual reproduction in bacteria is:

 
 
 
 

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

 
 
 
 

59. Pneumonia is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

62. Which organisms are the oldest life forms?

 
 
 
 

63. The DNA of E coli is:

 
 
 
 

64. Which is not found in bacteria?

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

68. Which is not true for Escherichia coli?

 
 
 
 

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

 
 
 
 

70. Leprosy is caused by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

75. Economic importance of bacteria lies in their being:

 
 
 
 

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

 
 
 
 

77. 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?

 
 
 
 

78. Streptomycin is obtained from:

 
 
 
 

79. 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:

 
 
 
 

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

 
 
 
 

81. Citrus canker is caused by:

 
 
 
 

82. Most resistant spore in bacteria is:

 
 
 
 

83. Ethylene oxide is widely used to:

 
 
 
 

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

 
 
 
 

85. Photoautotrophic bacteria have:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

88. Pasteur is famous for his:

 
 
 
 

89. 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?

 
 
 
 

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

 
 
 
 

91. Bacteria are placed under:

 
 
 
 

92. Clostridium can:

 
 
 
 

93. Mycoplasma are sensitive to:

 
 
 
 

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

 
 
 
 

95. Fertility of the soil is increased by:

 
 
 
 

96. Broad spectrum antibiotic is, which:

 
 
 
 

97. Bacteria were first discovered by:

 
 
 
 

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

 
 
 
 

99. Pasteurized milk is:

 
 
 
 

100. 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?

 
 
 
 

101. Nitrogen-fixing bacteria may be located:

 
 
 
 

102. Milk is converted to curd by:

 
 
 
 

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

 
 
 
 

104. Antibiotics cure the disease by:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

109. Mycoplasma is different from bacteria due to:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

112. Bacteria are found everywhere, except:

 
 
 
 

113. Some diseases caused by bacteria are:

 
 
 
 

114. Soil fertility is lost by the activities of:

 
 
 
 

115. The mode of nutrition of bacteria is usually:

 
 
 
 

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

 
 
 
 

117. Mycoplasma was discovered by:

 
 
 
 

118. Some bacteria cannot be killed easily because of:

 
 
 
 

119. Wine turns sour because of:

 
 
 
 

120. Bacteriovirdin pigments are found in which bacteria:

 
 
 
 

121. Plasmids are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

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

 
 
 
 

125. Photosynthetic bacteria have:

 
 
 
 

126. Water-borne bacterial diseases are:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

129. Sometimes the bacterial cell is enclosed in:

 
 
 
 

130. Which is the nuclear material in bacteria?

 
 
 
 

131. Select the wrong statement:

 
 
 
 

132. Typhoid in man is caused by:

 
 
 
 

133. 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:

 
 
 
 

134. Germ theory of disease was proposed by:

 
 
 
 

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

 
 
 
 

136. Bacteria which are spherical are called:

 
 
 
 

137. The largest known bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

140. Bacteria are considered to be plants because they:

 
 
 
 

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

 
 
 
 

142. The smallest bacterium is:

 
 
 
 

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

 
 
 
 

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

 
 
 
 

145. 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:

 
 
 
 

146. Acetobacter is useful in:

 
 
 
 

147. Usually, bacteria reproduce by:

 
 
 
 

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

 
 
 
 

149. Azotobacter and Beijerinckia are the examples of:

 
 
 
 

150. Little leaf disease of Brinjal is caused by:

 
 
 
 

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

 
 
 
 

152. Cell walls of Gram-positive bacteria contain:

 
 
 
 

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

 
 
 
 

154. Which bacteria convert NO_ to elemental nitrogen?

 
 
 
 

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

 
 
 
 

156. Which of the following statement is correct?