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

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
(C) Cauliflower mossaic virus
(D) None of these

3. The most important energy-yielding reaction for an aerobic organism is
(A) Glycosis
(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
(C) Hydrazine
(D) All of these

10. Important class of respiratory enzymes:
(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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