InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Bacterial conversion of organic nltrogenous or protein matter into ammonium com- pounds is calledA. denitrificationB. nitrificationC. ammonificationD. nitrogen fixation |
| Answer» Correct Answer - C | |
| 2. |
The bacteria which can trap solar energy for synthesizing ATP but can not utilize it for making food areA. thermophilesB. thermoacidophilesC. methanogensD. halophiles |
| Answer» Correct Answer - D | |
| 3. |
The hydrogen donor in bacterial photosyn- thesis is usuallyA. `H_2O`B. `H_2S`C. `NH_3`D. `HNO_3` |
| Answer» Correct Answer - B | |
| 4. |
Dacay by bacteria isA. aerbic breakdown of any organic matterB. aerobic breakdown of inorganic matterC. anaerobic breakdown of organic matter with foul odourD. aerobic breakdown of proteins. |
| Answer» Correct Answer - A | |
| 5. |
Beggiatoa oxidisesA. `H_2S` to SB. `SO_4` to SC. both correctD. `Fe^(++) to Fe^(+++)` |
| Answer» Correct Answer - A | |
| 6. |
Mycoplasma are not viruses in nature becauseA. these contain both DNA and RNA in the same cellB. these can not be grown artificially in cultures alsoC. they are not sensitive to antibioticsD. all of the above |
| Answer» Correct Answer - A | |
| 7. |
Nitrosomonas is aA. chemolithotrophB. chemoheterotrophC. autotrophD. heterotroph |
| Answer» Correct Answer - A | |
| 8. |
Nitrosomonas and Nitrococcus oxidiseA. Nitrate to nitrogenB. `CO_2` to carbohydratesC. `N_2" to "NO_3`D. `NH_3` to nitrite |
| Answer» Correct Answer - D | |
| 9. |
Pleuro-pneumonia like organisms are grouped underA. prokaryotesB. eukaryotesC. fungiD. viruses |
| Answer» Correct Answer - A | |
| 10. |
Nuclear membrane is absent inA. AgaricusB. VolvoxC. NostocD. Penicillium |
| Answer» Correct Answer - C | |
| 11. |
Read the following matches (i) Clostridium - Food poisoning botulin um (ii) Xanthomona- sesculenti (iii) Nitrosomonas - Bacterial blight of rice - Oxidises ammonia to nitritesA. (i), (iii) & (iv)B. (ii), (iii) & (iv)C. (i) & (iii)D. All are correct |
| Answer» Correct Answer - A | |
| 12. |
Nuclear material without nuclear membrane is observed inA. bacteria and mycoplasmaB. bacteria and algaeC. bacteria and slime mouldsD. mycoplasma and algae |
| Answer» Correct Answer - A | |
| 13. |
Membrane bound organelles are absent inA. PlasmodiumB. SaccharomycesC. StreptococcusD. Chlamydomonas |
| Answer» Correct Answer - C | |
| 14. |
Which one of the following organisms is not an example of eukaryotic cellsA. Paramoecium caudatumB. Escherichia coliC. Euglena viridisD. Amoeba proteus |
| Answer» Correct Answer - B | |
| 15. |
The cyanobacteria are also referred to as:-A. Golden algaeB. Slime mouldsC. Blue green algaeD. Protists |
| Answer» Correct Answer - C | |
| 16. |
Cyanobacteria refer toA. Autotrophic prokaryotes with character- istic bluegreen pigmentsB. Bacteria infecting the cyanophycean al- gaeC. Viruses infecting bluegreen alagaeD. Cynophycean members infecting bac- teria |
| Answer» Correct Answer - A | |
| 17. |
Some hyperthermophilic organisms that grow in highly acidic `(pH2)` habitats belong to the two groupsA. Liverworts and yeastsB. Eubacteria and archaeaC. Cyanobacteria and diatomsD. Protists and mosses |
| Answer» Correct Answer - B | |
| 18. |
Organisms found in extreme temperatures areA. EubacteriaB. ArchaebacteriaC. FungiD. Mycoplasma |
| Answer» Correct Answer - B | |
| 19. |
A process by which a part of genetic material separated from a broken cell is transferred to another cell is known asA. lysogenyB. transductionC. transformationD. conjugation |
| Answer» Correct Answer - C | |
| 20. |
Archaebacteria are special since they live in some of the most harsh habitats such asA. Extreme salty areasB. Hot springsC. Marshy areasD. All the above |
| Answer» Correct Answer - D | |
| 21. |
Select the correct combination of the statements (i-iv) regarding the characteristics of certain organisms. (i) Methanogens are archaebacteria which produce methane in marshy areas (ii) Nostoc is a filamentous blue-green alga which fixes atmospheric nitrogen (iii) Chemosnthetic autotrophic bacteria synthesise cellulose from glucose (iv) Mycoplasma lack a cell wall and can survive without oxygen The correct statements areA. (ii), (iii)B. (i), (ii), (iii)C. (ii), (iii), (iv)D. (i), (ii), (iv) |
| Answer» Correct Answer - D | |
| 22. |
The uniqueness in Archaebacteria is the presence ofA. peptidoglycan rich cell wallB. ether linked long branched alcohols bound to glycerolC. both statements are correct.D. nuclear membrane |
| Answer» Correct Answer - B | |
| 23. |
A term not associated with genetic recombination in bacteria isA. conjugationB. translationC. transductionD. transformation |
| Answer» Correct Answer - B | |
| 24. |
Which of the following are true of archaebacteria? Presence of peptidoglycan cell wall Strict aerobes First amino acid in protein synthesis is methionine Includes methanogens .A. 1,2 and 3B. 3 and 4C. 1, 3 and 4D. 1, 2, 3 and 4 |
| Answer» Correct Answer - B | |
| 25. |
The archaebacteria occurring in marshes, swamps, rumens of catties, gobar gas plants areA. methanogensB. ammonifying bacteriaC. thermoacidophilesD. denitrifying bacteria |
| Answer» Correct Answer - A | |
| 26. |
Which one of the following is associated with denitrification ?A. RhizobiumB. ThiobacillusC. ClostridiumD. Azotobacter |
| Answer» Correct Answer - B | |
| 27. |
Anoxygenic photosynthesis is characteristic ofA. UlvaB. RhodospirillumC. SpirogyraD. Chlamydomonas |
| Answer» Correct Answer - B | |
| 28. |
Which one of the following bacteria is not connected with nitrogen fixation?A. AzotobacterB. NitrosomonasC. FrankiaD. Rhizobium |
| Answer» Correct Answer - B | |
| 29. |
A pigment due to which root nodules of leguminous plants are pinkish, isA. phycoerythrinB. bacteriochlorophyllC. bacterioviridinD. leghaemoglobin |
| Answer» Correct Answer - D | |
| 30. |
Which is must for nitrogen fixation by symbiotic bacteria in root nodules?A. PhycocyaninB. CarotenoidsC. LeghaemoglobinD. Bacteria viridin |
| Answer» Correct Answer - C | |
| 31. |
Anoxygenic photoautotroph requiresA. `O_2, H_2O` & lightB. `CO_2 and H_2O`C. `CO_2` and lightD. `CO_2," light, "H_2S` |
| Answer» Correct Answer - D | |
| 32. |
The joker of plant kingdom areA. BacteriaB. ArchaebacteriaC. PPLOD. Viriods |
| Answer» Correct Answer - C | |
| 33. |
Facultative anaerobic bacteria areA. strictly anaerobesB. anaerobes but can live aerobicallyC. aerobes but can live anaerobically alsoD. no one is correct |
| Answer» Correct Answer - C | |
| 34. |
Smallest organism capable of autonomous growth and reproduction isA. VirusB. BacteriaC. MycoplasmaD. Bacteriophage |
| Answer» Correct Answer - C | |
| 35. |
Which of the following is not a free living `N_2`- fixing bacterium?A. AzotobacterB. RhizobiumC. BacillusD. Rhodospirillum |
| Answer» Correct Answer - B | |
| 36. |
Which among the following are the smallest living cells, known without a definite cell wall, pathogenic to plants as well as animals and can survive without oxygen ?A. BacillusB. PseudomonasC. MycoplasmaD. Nostoe |
| Answer» Correct Answer - C | |
| 37. |
What is true for photolithotrophs?A. Obtain energy from radiations and `H_2` from organic compounds.B. Obtain energy from radiations and `H_2` from inorganic compounds.C. Obtain energy from organic compoundsD. Obtain `H_2` from organic compounds |
| Answer» Correct Answer - B | |
| 38. |
Pili/fimbriae are surface appendages that help inA. attachmentB. transductionC. locomotionD. all of these |
| Answer» Correct Answer - A | |
| 39. |
Episomes areA. extranuclear part of BacteriaB. toxins producing bodiesC. extranuclear components with least no. of genesD. plasmids with ability to intergrate with bacterial chromosome |
| Answer» Correct Answer - D | |
| 40. |
Which one of the following pairs is wrongly matchedA. Streptomycetes AntibioticB. Methanogens Gobar gasC. Yeast EthanolD. Coliforms Vinegar |
| Answer» Correct Answer - D | |
| 41. |
What are the sex organs provided in some bacteria ?A. circular DNAB. plasmidC. sex piliD. gametes/F factor |
| Answer» Correct Answer - C | |
| 42. |
Endospores actualy help inA. transformationB. dispersal and perennationC. variationsD. all of the above. |
| Answer» Correct Answer - B | |
| 43. |
Match the column and find the correct answer |
| Answer» Correct Answer - C | |
| 44. |
Rickettsiae are said to be connecting link betweenA. Virus and bacteriaB. Bacteria and fungiC. Bacteria and PPLOD. Mycoplasma and viruses |
| Answer» Correct Answer - A | |
| 45. |
Ray fungi areA. actinomycetesB. fungiC. mycoplasmaD. archaebacteria |
| Answer» Correct Answer - A | |
| 46. |
Select the wrong statementA. Red sea is named after the colouration provided by blue green algae Trichodes- miumerythraeumB. Spirullina has a spirally coiled filamentC. Peptidoglycan is the main component of the archaebacterial cell wallD. All of the above |
| Answer» Correct Answer - C | |
| 47. |
Obligate intracellular parasites other than virus areA. RickettsiaeB. AzotobacterC. AzospirillumD. Mycoplasma |
| Answer» Correct Answer - A | |
| 48. |
The link between bacteria and fungi isA. ChlamydiaB. ActinomycetesC. RickettsiasD. Myxophyceae |
| Answer» Correct Answer - B | |
| 49. |
Pick up the wrong statementA. Cell wall is absent in AnimaliaB. Protista have photosynthetic and het- erotrophic modes of nutritionC. Some fungi are edibleD. Nuclear membrane is present in Monera |
| Answer» Correct Answer - D | |
| 50. |
Which of the following is not a feature of the plasmids ?A. Circular structureB. TransferableC. Single-strandedD. Independent replication |
| Answer» Correct Answer - C | |