Step MDCAT Biology Practice MCQs Test.8

MDCAT Biology Self-Assessment Paper 2019

Mdcat Biology Practice Test MCQs 2019 Self Assessment Collected from Past papers of Step by PGC(Punjab Group of Colleges).

 MDCAT Self-Assessment Past Paper 2019:

Tick the Correct option.

1. Diseases caused by viruses are known as

a          Parasitic          b          Social
c          Congenital      d          Infectious

2. The organisms whihc cuase the disease

a          Vector             b          Caustavie agent
c          Carrier             d          Pathogens

3. All of followings are viral diseases except

a          Diphtheria       b          Influenza
c          Polio                d          Small pox

4. The cause of influenza

a          Envloped RNA virus b  Naked RNA virus
c          Enveloped DNA virus d Naked DNA virus

5. Vascular leisions in the epithelial layers of ectodermal tissues are formed during

a          Mumps              b        Measles
c          Herpes simplex d        Small pox

6. Represents

a          Orf virus           b Tubulovirus
c          Influenza virus d  Picomavirus

8. Which one of followings develops immunity in its victim

a          Influenza         b   Small pox
c          Measels           d   Polio

9. Retroviruses are

a          RNA tumor viruses
b          DNA tumor viruses
c          DNA spherical viruses
d          Double standard RNA tumor viruses

10. The diamter of Rectroviruses

a          10nm   b          50nm
c          100nm d          200nm

11. The retroviruses have a special enzyme called

a          Transcriptase b  Reverse transeriptase
c          Lysozyme       d Reverse Lysozyme

12. The cause of AIDS

a          Intimate sexual contact
b          Contact with blood
c          HIV virus
d          Intimate sexual contact, contact with blood & HIV

13. The major cell infected by HIV is

a          T-phage           b   T-lymphocytes
c          Helper I phage d  Helper T-lymphocytes

14. Besides major cells, cells infected by HIV are of

a          Central nervous system
b          Peripheral nervous system
c          Respiratory system
d          Immune system

15. Whihc one of following treatments is not effective against AIDS

a          Restoring the immune system
b          Drugs to stop growth of virus
c          Developing vaccine
d          Use of Antibiotics

16. Whic one of following is false about AIDS

a          T-lymphocytes
b          Host specific
c          HIV
d          Acquired immune deficiency syndrome

17. In the lytic cycle of a bacteriophage, the host DNA is

a          Turned off by a protein coat
b          Turned on by removal of a protein coat
c          Digested into its nucleotides
d          Replicaled

18. In the lysogenic cycle, the DNA of a bacteriophage

a          Attaches to the inner surface of host membrane
b          Attaches to the bacterial chromosome
c          Digested into the nucleotides
d          Goes directly to the host’s ribosome for translation

19. Temperate phage may exist as

a          Capsid             b   Retrovirus
c          Virion             d    Prophage

20. T2 phage cause infection in

a          Animal         
b          Plant
c          Bacterium
d          Animal & plant

21. The detatchment of viral DNA from host’s chromosome & start of lytic cycle is

a          Induction         b          Lygency
c          Prophage         d          Lysis

22. Sarcina is

a          Grape-like clusters of cocci
b          Square of 4 cocci
c          Cube of 8 bacilli
d          Cube of 8 cocci

23. Bacilli divide

a          In one plane only
b          In two planes
c          In three planes
d          In four planes

24. All of following are Bacilli subtilis

a          Escherichia Coli
b          Bacillus subtilis
c          Hyphomicrobium
d          Pseudomonas

25. Mostly, flagella are present in

a          Cocci                           b          Cocci & bacilli
c          Bacilli & spiral           d          Bacilli

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