Test Your Knowledge - Free MCQ PRACTICE
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A fresh set of 20 random questions is generated every time you open this page and every time you refresh it.
For each of the following multiple choice questions, choose the most appropriate answer :

1. The concept of putting microbes to help clean up the environment is called
A. Pasteurization 
B. Bioremediation 
C. Fermentation 
D. Biolistics 

2. The virus(es) which can cause aseptic meningitis is/are
A. Polioviruses 
B. Coxsackieviruses 
C. Echo viruses 
D. All of these 

3. Which of the following infection(s) can be diagnosed by the use of polymerase chain reaction?
A. HIV-1 and HIV-2 viruses 
B. Hepatitis B virus 
C. Mycobacterium tuberculosis 
D. All of these 

4. Hepatitis G virus belongs to the family
A. Caliciviridae 
B. Flaviviridae 
C. Hepadnaviridae 
D. Coronaviridae 

5. Which of the following is not true for eukaryotic cells?
A. Chromosomes contain histones 
B. Gas vacuoles are present 
C. Nucleus is bounded by nuclear membrane 
D. Chloroplasts and mitochondria contains 70S ribosomes 

6. In glycolysis, ATP is created by
A. The chemiosmotic mechanism 
B. Photophosphorylation 
C. The pentose phosphate pathway 
D. Substrate level phosphorylation 

7. The agent representing an isolate of hepatitis G virus is
A. GBA-A 
B. GBV-B 
C. GBV-C 
D. None of these 

8. Which of the following is true regarding anthrax?
A. Anthrax is highly contagious 
B. Inhalation anthrax and cutaneous anthrax are caused by separate strains of Bacillus anthracis 
C. Anthrax is caused by a virus 
D. Inhalation Anthrax requires infection with a large number of spores 

9. Which of the following is correct for CD8 T cells?
A. CD8 T cell receptor recognizes epitopes that are also commonly recognized by B cells 
B. CD8 T cells can kill individual virus-infected cells in a contact dependent fashion 
C. In the thymus, CD8 T cells undergo positive selection only, whereas CD4 T cells undergo negative selection only 
D. CD8 T cells only recognize virus-infected cells 

10. Eugonic growth on Lowenstein-Jensen medium is produced by
A. M bovis 
B. Mycobacterium tuberculosis 
C. Both A and B 
D. None of the above 

11. The number of members of the division Phaeophyta that live in freshwater habitats
A. Is greater than the number of members of the division Chloro-phyta that live in freshwater habitats 
B. Is lesser than the number of members of the division Chlorophyta that live in freshwater habitats 
C. Is equal to the number of members of the division Chlorophyta that live in freshwater habitats 
D. None of the above 

12. Organisms can synthesize ATP by oxidative phosphorylation when they
A. Pass electrons from the oxidation of chlorophyll through an electron transport system 
B. Pass electrons to oxygen through an electron transport system containing cytochromes 
C. Oxidize glucose to pyruvate 
D. Ferment 

13. Living organisms have many complex characteristics. Which one of the following is shared by non-living matter as well?
A. Homeostasis 
B. Tissues 
C. Reproduction 
D. Molecules 

14. Which of the following reflects the correct order of events that take place during the multiplication of a virus?
A. Penetration, attachment, biosynthesis, maturation, release 
B. Attachment, penetration, biosynthesis, maturation, release 
C. Attachment, release, biosynthesis, maturation, penetration 
D. Attachment, penetration, maturation, biosynthesis, release 

15. The organism which grows best above 45C are called
A. Psychrophilic 
B. Mesosphilic 
C. Thermophilic 
D. Any of these 

16. For brucellosis, 2 ME agglutination test is used to identify
A. IgG 
B. IgM 
C. IgA 
D. IgE 

17. The manufacture of baker's yeast involve
A. S. cerevisiae 
B. S. thermophillus 
C. Bacillus subtilis 
D. None of these 

18. In a 5 year old boy who has history of pyogenic infections by bacteria with polysaccharide-rich capsules, which of the following investigations should be done?
A. IgA deficiency 
B. IgG1 deficiency 
C. IgG2 deficiency 
D. IgA and IgG2 deficiency 

19. The causative organism for AIDS was identified in the year
A. 1983 
B. 1976 
C. 1994 
D. 1969 

20. Which of the following is least likely to have a rigid cell wall?
A. Bacterium 
B. Archaean 
C. Fungus 
D. Protozoan 

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