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[Objective] MCQ's on Micro-Organism for Staff Nurses and Medical Exams

1. When a bacterial cell and mitochondria are treated with cyanide and carbon monoxide what happens initially? (A) Respiration inhibit...

mcq on microoraganism for medical and nurses exams

1. When a bacterial cell and mitochondria are treated with cyanide and carbon monoxide what happens initially?
(A) Respiration inhibits
(B) Photosynthesis inhibits
(C) Protein synthesis inhibits
(D) No effect occurs


2. Which virus was first observed?
(A) Hepatitis Virus
(B) TMV
(C) Cauliflower mossaic virus
(D) None of these


3. The most important energy-yielding reaction for an aerobic organism is
(A) Glycosis
(B) EMP
(C) KDPG
(D) Both b and c


4. A disease that can be transmitted by an infectious agent from one individual to another was called
(A) Epidemic
(B) Pandemic
(C) Communicable
(D) Comma


5. Cell cycle regulated by
(A) Cyclins
(B) Cdks
(C) Cyclins and Cd ks
(D) None of these


6. The proteinaceous compound are converted to ammonia by
(A) Putrification bacteria
(B) Ammonifiaction bacteria
(C) Nitrification bacteria
(D) Denitrifying bacteria


7. A cell becomes flaccid when placed in a
(A) Isotonic solution
(B) Hypertonic solution
(C) Hypotonic solution
(D) Normal solution


8. A mutation causing a substitution of one amino acid is called
(A) Point mutation
(B) Silent mutation
(C) Missence mutation
(D) None of these


9. The formation spindle fibres in the process of cell division is prevented by
(A) Corchicine
(B) ATP
(C) Hydrazine
(D) All of these


10. Important class of respiratory enzymes:
(A) NAD
(B) Cytochromes
(C) ATPase
(D) Hydrolases


11. The primary mode of transmission of poliomyelitis virus:
(A) Flies
(B) Milk
(C) Person to person
(D) Food and water


12. Genetic constitution of the cell is
(A) Phenotype
(B) Genotype
(C) Cryptotype
(D) Histotype


13. The primary mode of transmission of poliomyelitis is
(A) Oral route
(B) Blood
(C) Milk
(D) Person to person


14. Cerebral malaria is caused by
(A) Plasmodium vivox
(B) P.ovale
(C) P.falsiparum
(D) P.malaria


15. Ergot disease is caused by
(A) Puccinia
(B) Rhizopus
(C) Claveceps
(D) Penicillium


16. Most bacteria require vitamins as
(A) Growth Factors
(B) Sources of energy
(C) Sources of carbon
(D) Sources of electron donars


17. Which of these is a trace element for bacteria?
(A) Mg+2
(B) Na+
(C) Ca+2
(D) Mn+2


18. Virulent factor in pneumococcus is
(A) Cell wall
(B) Capsule
(C) Mesosomes
(D) Emdotoxins


19. The Bacteria move in response to magnetic field is
(A) Spirochets
(B) Treponema
(C) Aquaspirillum Magnetotacticum
(D) None of these


20. Nagler reaction detects
(A) Corynebacterium diphtheriae
(B) Clostridium tetani
(C) Clostridium perfringens
(D) Clostridium botulinum


21. The following organisms lack definite cell wall
(A) Mycoplasma
(B) L-forms
(C) Both a and b
(D) Bacteria


22. The following disease are caused by Mycoplasma except
(A) Pneumonia in human beings
(B) Little leaf of Brinjal
(C) Dwarf disease of Mulbery
(D) Citrus canker


23. Mycotoxins are produced by
(A) Bacteria
(B) Fungi
(C) Algae
(D) Protozoans


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