MICROBIOLOGY INTRODUCTION AND BACTERIA ASSIGNMENT

1	Choose the correct statement In Microbiology, only microscopic algae and fungi are studied Microspores are studied in Microbiology Most of the fungi are macroscopic Stanier suggested to consider to include the culture methods in the definition of Microbiology Ans:Stanier suggested to consider to include the culture methods in the definition of Microbiology
2	[A]: Microbes are Ubiquitous [R]: Microorganisms are found in both and extreme conditions of the environment. Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:Both A and R are true and R is the correct explanation of A
3	[A]: LAB improve the nutritional quality of food stuffs. [R]: Lactobacillus plays a role in increasing Vitamin B12 in the curd. Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:Both A and R are true and R is the correct explanation of A
4	Match the following A - IV, B - II, C - V, D - I A - III, B - IV, C - I, D - V A - IV, B - V, C - II, D - I A - IV, B - III, C - V, D - I Ans:A - IV, B - III, C - V, D - I
5	Saprophytic microbes play a role in extraction of Uranium from rocks Biological control Production of antibiotics Recycling of elements Ans:Recycling of elements
6	Biogas mainly consists of Methane Ethane Propane Oxygen Ans:Methane
7	Heidi Schulz is associated with the discovery of following type of microbe. Streptococcus Staphylococcus Streptobacillus Monobacillus Ans:Streptococcus
8	Epulopiscium is a Coccus Bacillus Sprillum Vibrio Ans:Bacillus
9	Monstrous bacteria are I. Thiomargarita namibiensis II. Cristispira III. Acetobacter IV. Epulopiscium fishelsoni I and II II and III II and IV I and IV Ans:I and IV
10	Number of cells seen in given plane of Sarcina is 16 32 4 8 Ans:4
11	Match the following A - II, B - V, C- III, D - I A - IV, B - V, C - III, D - I A - II, B - IV, C - I, D - III A - II, B - V, C - I, D -IV Ans:A - II, B - V, C- III, D - I
12	If two tetracocci are placed one above the other, it forms Streptococcus Staphylococcus Pleomorphic microbe Sarcina Ans:Sarcina
13	The shape of living Magnet is Spherical Spiral Rod like Thread like Ans:Spiral
14	Choose the correct statement In Microbiology, only microscopic algae and fungi are studied Microspores are studied in Microbiology Most of the fungi are macroscopic Stanier suggested to consider to include the culture methods in the definition of Microbiology Ans:Stanier suggested to consider to include the culture methods in the definition of Microbiology
15	[A]: Microbes are Ubiquitous [R]: Microorganisms are found in both and extreme conditions of the environment. Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:Both A and R are true and R is the correct explanation of A
16	[A]: LAB improve the nutritional quality of food stuffs. [R]: Lactobacillus plays a role in increasing Vitamin B12 in the curd. Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:Both A and R are true and R is the correct explanation of A
17	Match the following A - IV, B - II, C - V, D - I A - III, B - IV, C - I, D - V A - IV, B - V C - II, D - I A - IV, B - III, C - V, D - I Ans:A - IV, B - III, C - V, D - I
18	Saprophytic microbes play a role in extraction of Uranium from rocks Biological control Production of antibiotics Recycling of elements Ans:Recycling of elements
19	Biogas mainly consists of Methane Ethane Propane Oxygen Ans:Methane
20	Heidi Schulz is associated with the discovery of following type of microbe. Streptococcus Staphylococcus Streptobacillus Monobacillus Ans:Streptococcus
21	Epulopiscium is a Coccus Bacillus Sprillum Vibrio Ans:Bacillus
22	Monstrous bacteria are I. Thiomargarita namibiensis II. Cristispira III. Acetobacter IV. Epulopiscium fishelsoni I and II II and III II and IV I and IV Ans:I and IV
23	Number of cells seen in given plane of Sarcina is 16 32 4 8 Ans:4
24	Match the following A - II, B - V, C - III, D - I A - IV, B - V, C - III, D - I A - II, B - IV, C - I, D - III A - II, B - V, C - I, D - IV Ans:A - II, B - V, C - III, D - I
25	If two tetracocci are placed one above the other, it forms Streptococcus Staphylococcus Pleomorphic microbe Sarcina Ans:Sarcina
26	The shape of living Magnet is Spherical Spiral Rod like Thread like Ans:Spiral
27	Invaginations of Bacterial Plasma membrane are I. Chlorobium vesicles II. Intracytoplsmic membranes III. Mesosomes I and II I and III I, II, III II and III Ans:II and III
28	Gas vacuoles are seen in Halobacterium Lactobacillus Treponema E. coli Ans:Halobacterium
29	[A]: Bacteria are haploid [R]: They have only one linear chromosome in their nucleoid Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:A is true but R is false
30	[A]: Lactobacillus has mesosomes [R]: Structures of cell membrane that help in binary fission are present in Gram +ve bacteria Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:Both A and R are true and R is the correct explanation of A
31	In all bacteria, the cell membrane is involved in Photosynthesis Replication of chromosome Osmoregulation Storage of water Ans:Osmoregulation
32	In one of the following features bacteria show resemblance with Fungi Type of reserve food materials Cell membrane invaginations Cell wall composition Type of ribosomes in protoplasm Ans:Type of reserve food materials
33	Plasmid is made of Single stranded RNA Double stranded DNA Double stranded RNA Single stranded DNA Ans:Double stranded DNA
34	Colicins are a type of toxins whose synthesis is under the control of Nucleoid genes Antibiotics whose synthesis is under the control of Plasmid DNA Toxins whose synthesis can be under the control of either Nucleoid DNA or Plasmid DNA Toxins whose synthesis is under the control of Plasmid Ans:Toxins whose synthesis is under the control of Plasmid
35	Vacuoles of bacteria help in Osmoregulation Storage of excretory materials Maintaining the position of bacteria in water body Maintaining the shape of bacterial cell shape Ans:Maintaining the position of bacteria in water body
36	Study the following with respect to Bacteria and identify the correct match A - V, B - IV, C - I, D - III A - IV, B - V, C - I, D - III A - V, B - IV, C - II, D -III A - V, B - IV, C - I, D - II Ans:A - V, B - IV, C - I, D - III
37	Study the following table with respect to Bacteria and choose the correct combination II and III I and IV I and II III and IV Ans:I and II
38	These structures of bacteria can be found as aggregates I. Chlorobium vesicles II. Mesosomes III. Gas vacuoles IV. Ribosomes I and II II and III III and IV Only IV Ans:III and IV
39	Choose the incorrect statement Volutin granules are Poly β-hydroxybutyrate granules Some bacteria have gas vacuoles Colicins are toxins Purple bacteria have chlorophylls Ans:Volutin granules are Poly β-hydroxybutyrate granules
40	[A]: Rhodomicrobium is photosynthetic [R]: It converts CO2 into organic compound Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:A is true but R is false
41	Chemoheterotrophs use the energy of electrons of the following atoms of organic compound Carbon Oxygen Nitrogen Hydrogen Ans:Hydrogen
42	Carbon source and energy source is same substance in the nutrition of Salmonella Chromatium Rhodopseudomonas Thiobacillus Ans:Salmonella
43	Denitrifying bacteria are Chemoheterotrophs Photoheterotrophs Photoautotrophs Chemoautotrophs Ans:Chemoautotrophs
44	Match the following A - IV, B - V, C - II, D - III A - V, B - IV, C - II, D - I A - IV, B - III, C - I, D - V A - IV, B - V, C - II, D -I Ans:A - IV, B - V, C - II, D -I
45	Study the following table and choose the correct combination I and IV II and I II and III III and IV Ans:II and III
46	Species of the genus Thiobacillus can oxidize I. Fe+2 II. Fe+3 III. S IV. NO3 I, II, III I, III, IV All except I All except III Ans:I, III, IV
47	Bdellovibrio bacteriovorous naturally purifies the water of river Ganges Jamuna Godavari Sindhu Ans:Ganges
48	The following mode of nutrition is shown by only bacteria Photoautotrophism Photoheterotrophism Cheomoautotrophism Chemoheterotrophism Ans:Cheomoautotrophism
49	The most common method of reproduction in bacteria is Binary Fission Transformation Conjugation Transduction Ans:Binary Fission
50	Arrange the following in correct sequence during Binary Fission in Bacterial cell I. Constriction formation on the cell wall II. Elongation of cell III. Division of Protoplasm IV. Replication of Chromosome II, IV, III, I IV, II, III, I IV, III, I, II II, III, IV, I Ans:II, IV, III, I
51	Upon successful growth of 10 bacterial cells for 3 hours, how many cells are formed at the end. (Bacterium divides once in every 20 min.) 4120 5120 2560 5560 Ans:5120
52	The structure of bacterial cell that plays a key role during binary fission is Pili Chlorosomes Mesosomes Plasmids Ans:Mesosomes
53	Arrange the following events in correct sequence during conjugation in E.coli I. Coming closer of F+ and F- cells. II. Movement of single stranded Plasmid through conjugation canal III. Establishment of conjugation canal IV. Double stranded nature of F plasmid in receipient cell I, III, II, IV III, I, II, IV I, II, III, IV I, III, IV, II Ans:I, III, II, IV
54	Lederberg was involved in the discovery of I. Conjugation II. Binary Fission III. Transformation IV. Transduction I and II III and IV I and IV II and IV Ans:I and IV
55	Match the following A - IV, B - II, C - III, D - I A - II, B - IV, C - I, D - III A - IV, B - II, C - I, D - III A - III, B - IV, C - II, D - I Ans:A - IV, B - II, C - I, D - III
56	[A]: True sexual reproduction is absent in Bacteria [R]: Bacteria do not show syngamy Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:Both A and R are true and R is the correct explanation of A
57	If 20 bacterial cells divide at the rate of once in every 20 minutes for 2 hours, what is the number of bacterial cells, number of binary fissions and number of generations of divisions occured respectively 1280, 1279, 6 1280, 1260, 5 1260, 1240, 6 1280, 1260, 6 Ans:1280, 1260, 6
58	Choose the incorrect statement/s I. Karyokinesis and Cytokinesis occur simultaneously during binary fission. II. DNA replication and karyokinesis occur simultaneously in Binary fission of Bacteria III. Furrow formation on cell membrane and cell wall is simultaneous in bacterial binary fission IV. The two daughter cells formed from a cell upon binary fission are always identical in all aspects. All All except II All except IV All except I Ans:All except II
59	Choose the correct statement During sexual reproduction in bacteria, there is no contact between the cells Cells of bacteria do not fuse during the sexual process Other organisms are not involved in gene transfer from one bacterium to another bacterium Endonucleases are not involved in bacterial sexual process Ans:Cells of bacteria do not fuse during the sexual process
60	In a test tube with bacterial suspension, there are 10,000 bacteria belonging to the species E.coli. Among them 10% belong to F+ strain and the remaining F- strain. These bacteria show conjugation once in every 5 minutes. If there is no binary fission between these bacteria, upon completion of 15 minutes, how many bacteria remain as F- and how many as F+. 400 F+, 600 F- 500 F+,, 500 F- 800 F+,, 200 F- 1000 F+, None F- Ans:800 F+,, 200 F-
61	Bacterial genera that can be friends as well as foes to mankind are I. Bacillus II. Clostridium III. Xanthomonas IV. Agrobacterium I, II, III II, III, IV I, III, IV I, II, IV Ans:I, II, IV
62	Scavengers of nature are Photoautotrophs Photoheterotrophs Chemoheterotrophs Chemoautotrophs Ans:Chemoheterotrophs
63	Match the following A - II, B -IV, C - III, D - I A - II, B -IV, C - V, D - I A - IV, B -V, C - II, D - III A - II, B -V, C - III, D - I Ans:A - II, B -IV, C - V, D - I
64	The following bacterium is used for industrial production of amino acid E. coli Micrococcus Corynebacterium glutamicum Brevibacterium Ans: Corynebacterium glutamicum
65	ATP formed in Photophosphorylation are used for Nitrogen fixation but not for CO2 fixation in Chlorobium Chlorobacterium Azotobacter Rhodomicrobium Ans:Rhodomicrobium
66	Match the following A - IV, B - III, C - V, D - I A - IV, B - III, C - II, D - I A - V, B - III, C - IV, D - II A - IV, B - V, C - II, D - I Ans:A - IV, B - III, C - V, D - I
67	Tea leaves are cured by using Bacillus Spirillum Coccus Vibrio Ans:Coccus
68	Match the following A - III, B - I, C - V, D - II A - III, B - II, C - V, D - IV A - II, B - III, C - IV, D - V A - III, B - II, C - V, D - I Ans:A - III, B - II, C - V, D - I
69	Streptomyces venezuelae is used in the production of Cycloheximide Chloramphenicol Amphoterican Neomycin Ans:Chloramphenicol
70	Match the following A - II, B - I, C - III, D - V A - II, B - IV, C - I, D - V A - III, B - IV, C - I, D - V A - II, B - III, C - I, D - IV Ans:A - II, B - IV, C - I, D - V
71	Species of Mycobacterium cause I. Leprosy II. Actinomycosis III. Brucellosis IV. Tuberculosis I, II, III II, III, IV I, II, IV I, III, IV Ans:I, II, IV
72	Match the following A – IV, B – V, C – II, D - I A –IV, B – III, C – I, D - II A –IV, B – III, C – II, D - I A –V, B – III, C – II, D - I Ans:A –IV, B – III, C – II, D - I
73	[A]: Most of the antibiotics are produced by the species of Streptomyces [R]: Streptomyces polymyxa produces Polymyxin B Both A and R are true and R is the correct explanation of A Both A and R are true but R is not the correct explanation of A A is true but R is false A is false but R is true Ans:A is true but R is false
74	Match the following A - IV, B - V, C - II, D -I A - IV, B - III, C - I, D - II A - IV, B - III, C - II, D - I A - V, B - IV, C - II, D - I Ans:A - V, B - IV, C - II, D - I