Biology Chapter 1 Entry test MCQs
26. Among followings…………….enzyme is naturally found in human immunodeficiency virus.
a. RNA polymerase
b. DNA polymerase
c. Ligase
d. Reverse transcriptase
27. Genome of virus is composed of:
a. DNA
b. RNA
c. A and B
d. Protein
28. Which of the following is not related to enveloped virus?
a. Their envelop is sensitive to sunlight
b. They survive for a short time
c. Envelope is derived from host
d. They are tolerant to antibodies
29. The complete mature and infection virus particle is known as:
a. Genome
b. Venom
c. Capsid
d. Virion
Bacteriophages
30. In lytic cycle of bacteriophage, the phage is regarded as:
a. Guest
b. Master
c. Slave
d. Inducer
31. The bacteriophage replicates only inside the:
a. Animal cell
b. Bacterial cell
c. Fungal cell
d. Both A & B
32. The part of bacteriophage that enters the host cell is:
a. Protein coat
b. Protein sheath
c. Tail
d. Genome
33. The bacteriophage attaches itself by its tail to the cell wall of bacterium at:
a. Receptor site
b. Anywhere on the cell
c. Binding site
d. Adhering surface
34. When a virus is in the lysogenic cycle, which of these will occur?
a. The viral DNA replicates and it is separated by the cell’s spindle apparatus
b. Viral DNA becomes incorporated into the host DNA
c. Antiviral defenses of the cell expel the viral DNA
d. Host cell produces many new viruses before it breaks apart
35.Enzyme that is present in a virus also:
a. Lysozyme
b. Dehydrogenase
c. Arginase Viral Diseases
d. Urease
36. Most commonly, lesions can be seen around mouth, lips and at other skin sites in:
a. Mumps
b. Influenza
c. Herpes
d. Polio
37. Viral inflammation of parotid gland is commonly associated with:
a. Herpes simplex
b. Mumps
c. Influenza
d. Small pox
38. All of the following are viral diseases except :
a. Mumps
b. Influenza
c. Tetanus
d. Polio
39. Hepatitis A virus is:
a. dsDNA
b. ssRNA
c. ssDNA
d. dsRNA
40. HAV is transmitted through:
a. Fecal-oral route
b. Blood
c. Syringes
d. Serum
41. Virus that attack on spinal cord is:
a. Toga Virus
b. Rabies
c. Polioviras
d. HIV
42. Poliomyelitis affects:
a. Motor neuron
b. Sensory neuron
c. Muscles
d. Brain
43. Small pox is caused by pox virus which is:
a. RNA Naked Virus
b. DNA Naked Virus
c. DNA Enveloped Virus
d. RNA Enveloped Virus
44. Mad cow disease is caused by:
a. Viroid
b. Virus
c. Prion
d. Virion
45. Hepatitis C is also known as:
a. Infusion Hepatitis
b. Infections Hepatitis
c. Delta Hepatitis
d. Serum Hepatitis
46. Pigs are reservoir for:
a. Hepatitis C
b. Hepatitis A
c. Hepatitis E
d. Hepatitis B
47. The enzyme involved in viral replication are synthesized:
a. On the viral ribosomes
b. By the host cell
c. On the interior surface of viral coat
d. On the interior surface of viral membrane
48. Ribavirin is used to treat:
a. Hepatitis A
b. Hepatitis C
c. Hepatitis D
d. Hepatitis B
49. Virus that affects genital organs:
a. HIV
b. HCV
c. Pox virus
d. HSV
50. Which of the following pair of diseases is viral?
a. Typhoid, Tetanus
b. Rabies, Measles
c. AIDS, Syphilis
d. Cholera, Tuberculosis