McqMate
These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: Bachelor of Agriculture (BSc agri) .
Chapters
| 1. |
In Streptococcus fecalis, the conjugation takes place at |
| A. | Pili |
| B. | Cell membrane |
| C. | Cell wall |
| D. | Flagella |
| Answer» C. Cell wall | |
| 2. |
The infected mad dogs may contain |
| A. | Nergi bodie |
| B. | Niagri bodies |
| C. | Negri bodies |
| D. | Neisser bodies |
| Answer» C. Negri bodies | |
| 3. |
What disease the Nesser will produce? |
| A. | Mump |
| B. | Rubella |
| C. | Polio |
| D. | Measles |
| Answer» D. Measles | |
| 4. |
Rancidity in spoiled foods is due to |
| A. | Lipolytic organisms |
| B. | Proteolytic organisms |
| C. | Toxigenic microbes |
| D. | Saccharolytic microbes |
| Answer» A. Lipolytic organisms | |
| 5. |
The Baterium that is most commonly used in genetic engineering is |
| A. | Escherichia |
| B. | Klebsiella |
| C. | Proteius |
| D. | Serratia |
| Answer» A. Escherichia | |
| 6. |
The functions of plasmid are |
| A. | DNA replication |
| B. | Protein synthesis |
| C. | Cell wall synthesis |
| D. | None of the above |
| Answer» D. None of the above | |
| 7. |
Mycoplasmas are bacterial cells that |
| A. | Fail to reproduce on artificial meida |
| B. | Have a rigid cell wall |
| C. | Are resistant to penicillin |
| D. | Stain well with Gram’s stain |
| Answer» C. Are resistant to penicillin | |
| 8. |
The etiologic agent of botulism is a |
| A. | Neurotoxin |
| B. | Endotoxin |
| C. | Enterotoxin |
| D. | All of the above |
| Answer» A. Neurotoxin | |
| 9. |
The bacterial cells are at their metabolic peak during |
| A. | Lag phase |
| B. | Log |
| C. | Stationary |
| D. | Decline |
| Answer» B. Log | |
| 10. |
Protein particles which can infect are called |
| A. | Viron |
| B. | Prions |
| C. | Nucleoida |
| D. | None of these |
| Answer» B. Prions | |
| 11. |
In most of purple bacteria, the light harvesting centers are |
| A. | B 850 & Fe- |
| B. | B 850 & B 875 |
| C. | B 845 & B 875 |
| D. | B 850 & B830 |
| Answer» B. B 850 & B 875 | |
| 12. |
Endotoxin produced by gramnegative bacteria is present in |
| A. | Peptidoglycan |
| B. | Lippolysacharide |
| C. | Theichoic acid |
| D. | Inner membrane |
| Answer» B. Lippolysacharide | |
| 13. |
Which one of the following was Gramnegative, chemolithotrophic bacteria? |
| A. | Siderococcu |
| B. | E.coli |
| C. | Spirellum |
| D. | Mycoplasms |
| Answer» B. E.coli | |
| 14. |
The mode of reproduction which occurs in mycoplasma is |
| A. | Budding |
| B. | Bursting |
| C. | Binary fission |
| D. | Binary fusion |
| Answer» C. Binary fission | |
| 15. |
Which one of the following is about Herpes viruses? |
| A. | Icosahedral, with envelope, ds DNA |
| B. | Polyhedral with envelope, ds DNA |
| C. | RNA, helical with envelope |
| D. | ds DNA, brick shape |
| Answer» A. Icosahedral, with envelope, ds DNA | |
| 16. |
Which one of the following produce typical fried egg appearance colonies on solid media? |
| A. | Mycobacteria |
| B. | Mycoplasts |
| C. | Mycoplasms |
| D. | Bacteroides |
| Answer» C. Mycoplasms | |
| 17. |
An organism that is osmophilic and has a specific requirements for sodium chloride resembles |
| A. | Halophile |
| B. | Basophile |
| C. | Barophile |
| D. | Xerophile |
| Answer» A. Halophile | |
| 18. |
A population of cells derived from a single cell are called |
| A. | Monclonal cell |
| B. | Clones |
| C. | Protoplasts |
| D. | Sub culture |
| Answer» B. Clones | |
| 19. |
Hetrolactic acid bacteria produce |
| A. | Lactic acid only |
| B. | Lactic acid + H2O + CO2 |
| C. | Lactic acid + CO2 |
| D. | Lactic acid + alchohol + CO2 |
| Answer» D. Lactic acid + alchohol + CO2 | |
| 20. |
In which of the follwing microorganism, conjunction tube was not produced during conjunction process? |
| A. | Thiobaillus thiooxidence |
| B. | T. ferroxidance |
| C. | Tetrahymena thermophila |
| D. | Cryptaporiclium |
| Answer» A. Thiobaillus thiooxidence | |
| 21. |
Which of the following is most similar to Rickettsia and Chlamydia? |
| A. | Bdellovibrio |
| B. | Clostridium |
| C. | Mycobacterium |
| D. | Mycoldaima |
| Answer» C. Mycobacterium | |
| 22. |
How would you distinguish pseudomonas species from E-cloi? |
| A. | Gram staining |
| B. | Morphology |
| C. | Glucose fermentation Vs Respiration |
| D. | All of the above |
| Answer» C. Glucose fermentation Vs Respiration | |
| 23. |
Which of the following is pathogenic to humans? |
| A. | Spirogyra |
| B. | Cephaleuros |
| C. | Prototheca |
| D. | Both b and c |
| Answer» C. Prototheca | |
| 24. |
Tumer inducing plasmids are extensively used in production of |
| A. | Avirulent phases |
| B. | Single cell proteins |
| C. | Transgenic plants |
| D. | Nitrogen fixing bacteria |
| Answer» C. Transgenic plants | |
| 25. |
The viruses that live as parasites on bacteria are |
| A. | Fungi |
| B. | Commensels |
| C. | Bacteriophages |
| D. | None of these |
| Answer» C. Bacteriophages | |
| 26. |
The anthrax disease is most frequently infected from |
| A. | Cattle |
| B. | Sheeps |
| C. | Rats |
| D. | Both a and b |
| Answer» D. Both a and b | |
| 27. |
The colonies produced by Pseudomonas on Mac Conkey’s medium are |
| A. | Purple colored |
| B. | Pink colored |
| C. | Pale colored |
| D. | Green colored |
| Answer» C. Pale colored | |
| 28. |
Staining material of gram positive bacterium is |
| A. | Fast green |
| B. | Haematoxylon |
| C. | Crystal violet |
| D. | Safranin |
| Answer» C. Crystal violet | |
| 29. |
The pigment present in red algae is |
| A. | Rhodochrome |
| B. | Fucoxanthin |
| C. | Chlorophyll only |
| D. | Chlorophyll + phycobilin |
| Answer» D. Chlorophyll + phycobilin | |
| 30. |
During mitosis, synapsis occurs in the phase called |
| A. | Telophase |
| B. | Anaphase |
| C. | Prophase |
| D. | None of the above |
| Answer» C. Prophase | |
| 31. |
Which of the following change is a transition? |
| A. | ATGC’!ATCC |
| B. | ATGC’!ATGG |
| C. | ATGC’!AGGC |
| D. | None of these |
| Answer» D. None of these | |
| 32. |
Citrus canker is caused by |
| A. | Phytomona |
| B. | Salmonella |
| C. | Lactobacillus |
| D. | Hay bacillus |
| Answer» A. Phytomona | |
| 33. |
Bacter ia that are respons ib le for fermentation of dairy milk are |
| A. | Azetobacter |
| B. | Rhizobium |
| C. | Lactobacillus |
| D. | Hay bacillus |
| Answer» C. Lactobacillus | |
| 34. |
The fungal disease that affect the internal organs and spread through the body are called |
| A. | Mycose |
| B. | Systemic mycoses |
| C. | Mycotoxicosis |
| D. | Superficial mycoses |
| Answer» B. Systemic mycoses | |
| 35. |
The staining technique used to stain the metachromatic granules of Corynebacterium |
| A. | Giemsa stain |
| B. | Alberts stain |
| C. | Acid fast staining |
| D. | Both a and b |
| Answer» B. Alberts stain | |
| 36. |
The orderly increase in all components of protoplasm of a cell is called |
| A. | Reproduction |
| B. | Cell division |
| C. | Growth |
| D. | All of the above |
| Answer» C. Growth | |
| 37. |
The causative organism of cholera, i.e., Vibrio show the movement called |
| A. | Gliding movement |
| B. | Darting movement |
| C. | Pseudopoidal movement |
| D. | None of these |
| Answer» B. Darting movement | |
| 38. |
Erythrocytes will get its ATP energy only by |
| A. | Glycolysi |
| B. | Kreb’s cycle |
| C. | Electron Transport |
| D. | HMP shunt |
| Answer» A. Glycolysi | |
| 39. |
Virus will contain |
| A. | Cell membrane |
| B. | Cell wall |
| C. | DNA |
| D. | DNA or RNA |
| Answer» D. DNA or RNA | |
| 40. |
The bacterial pili mainly contain |
| A. | Carbohydrate |
| B. | Lipids |
| C. | Proteins |
| D. | Minerals |
| Answer» C. Proteins | |
| 41. |
The wonder drug of second world war is produced by |
| A. | Algae |
| B. | Fungi |
| C. | Bacteria |
| D. | Plants |
| Answer» B. Fungi | |
| 42. |
Role of bacteria in carbon cycle is |
| A. | Photosynthesis |
| B. | Chemosynthesis |
| C. | Breakdown of organic compounds |
| D. | Assimilation of nitrogen compounds |
| Answer» C. Breakdown of organic compounds | |
| 43. |
Centromere is that part of chromosome where |
| A. | Nucleoli are formed |
| B. | Crossing over takes places |
| C. | Chromatids are attached |
| D. | Naking occurs |
| Answer» C. Chromatids are attached | |
| 44. |
Somatic cell of the adult body are haploid in many except |
| A. | Vertebrate |
| B. | Invertebrates |
| C. | Fungi |
| D. | Vascular plants |
| Answer» C. Fungi | |
| 45. |
Congential diseases are |
| A. | Diseases present at birth |
| B. | Deficiency disease |
| C. | Occur during life |
| D. | Spread from one individual to another |
| Answer» A. Diseases present at birth | |
| 46. |
The enzyme needed in biological systems for joining two molecules is called |
| A. | Lyase |
| B. | Diastases |
| C. | Polymerases |
| D. | Hydrolase |
| Answer» C. Polymerases | |
| 47. |
Meosomes are the part of |
| A. | Plasma membrane |
| B. | ER |
| C. | Lysosomes |
| D. | Golgi |
| Answer» A. Plasma membrane | |
| 48. |
All prokaryotes are surrounded by a cell wall except |
| A. | Mycoplasm |
| B. | Sperochetes |
| C. | Actinomycetes |
| D. | Methanogena |
| Answer» A. Mycoplasm | |
| 49. |
Enzyme hydrolyzing bacterial cell wall |
| A. | Lysozome |
| B. | Reductase |
| C. | Protease |
| D. | Lysozyme |
| Answer» D. Lysozyme | |
| 50. |
Cows can digest straw because they contain |
| A. | Cellulose hydrolyzing microorganisms |
| B. | Protein hydrolyzing bacteria |
| C. | Lipid hydrolyzing microorganisms |
| D. | Amino acid degrading bacteria |
| Answer» A. Cellulose hydrolyzing microorganisms | |
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