Microbiology Test Problems and its Solutions

20 Microbiology Test Problems:

1. All are characteristics of Bacteria except:
1. Prokaryotic
2. Single-celled
3. May have peptidoglycan
4. None of the above

2. What is the name of the arrangement of flagella in which the bacteria has two flagella on one end of the cell?
1. Monotrichous
2. Amphitrichous
3. Lophotrichous
4. Peritrichous

3. Which of the following is false about fimbriae?
1. They are used for attachment
2. Important for virulence
3. Used for motility
4. Involved in biofilm formation

4. Which of the following is the only prokaryote without a cell wall
1. Mycoplasmas
2. Mycobacterium
3. Corynebacterium diptheriae
4. Escherichia coli

5. Which of the following has an elementary body and a reticulate body?
1. Escherichia coli
2. Chlamydias
3. Rickettsias
4. Mycobacterium

6. The major difference between Archaea and Bacteria is:
1. Archaea is Prokaryotic
2. Archaea lacks peptidoglycan in cell wall
3. Archaea are non-pathogenic to date
4. A and C
5. B and C

7. Fungi are:
1. Motile
2. Gram negative
3. Eukaryotic
4. Autotrophic

8. When a fungus contains two forms, they are:
1. Pleiomorphic
2. Dimorphic
3. Mycelium
4. Acid fast

9. Lichens consist of what two eukaryote organisms living together in close association?

10. Which of the following causes Chaga’s Disease
1. Trypanosoma cruzi
2. Trypanosoma gambiens
3. Balantidium coli
4. Trichomonas vaginalis

11. Viruses are:
1. Prokaryotic
2. Eukaryotic
3. Acellular
4. A and C
5. B and C

12. Prions contain
1. DNA and RNA
2. RNA only
3. DNA only
4. Protein only
5. DNA, RNA and protein

13. A microbe that can tolerate oxygen but doesn’t use it, is considered to be:
1. Obligate Aerobe
2. Facultative Anaerobes
3. Aerotolerant Anaerobe
4. Obligate Anaerobe

14. At what phase aremicrobes  particularly sensitive to adverse conditions
1. Lag phase
2. Log phase
3. Stationary phase
4. Death phase

15. Which of the following is a coenzyme?
1. Zinc
2. Vitamin
3. Iron
4. Protein

16. Which of the following uses an organic molecule as the final acceptor
1. Aerobic respiration
2. Anaerobic respiration
3. Fermentation
4. None of the above

17. Exotoxins are:
1. By gram negative only
2. By gram positive only
3. Dead bacteria
4. Live bacteria

18. Which of the following has complete hemolysis
1. Alpha
2. Beta
3. Gamma

19. What is the name of the control method that is freeze vacuum drying?

20. Which of the following is static?
1. Autoclaving
2. Milk pasteurization
3. Radiation
4. None of the above

Answer Key to the Microbiology Problems:

1. d
2. c
3. c
4. a
5. b
6. e
7. c
8. b
9. Fungus and alga
10. a
11. c
12. d
13. c
14. b
15. b
16. c
17. b
18. d
19. Lyophilization
20. b

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