Biology Chapter 1 Entry test MCQs
51. Which virus that infects humans has no vector and is unable to survive outside human body?
a. Chicken pox virus
b. Polio virus
c. Mumps virus
d. None of these
52. Polio vaccine is given by:
a. Oral drops
b. Spray
c. Local application
d. Tablets
53. Which of the following is the simplest forms of pathogens causing disease?
a. Fungus
b. Viruses
c. Amoeba
d. Prions
54. Which is not a viral disease?
a. Chicken pox
b. AIDS
c. Influenza
d. Malaria
55. Oral herpes is caused by:
a. HSV-2
b. HIV-2
c. HSV-1
d. HCV
56. Which of the following diseases is caused by a viroid?
a. Hepatitis C
b. AIDS
c. Hepatitis D
d. Hepatitis B
57. ………..is known to cause cancers in animals.
a. HIV
b. Polio virus
c. Rous sarcoma virus
d. HBV
HIV and AIDS
58. Retroviruses contain:
a. Single stranded DNA
b. Single stranded RNA
c. Double stranded DNA
d. Double stranded RNA
59. Major Cells that are infected by HIV are:
a. Natural cells
b. B-lymphocytes
c. T-Lymphocytes
d. T-Helper cells
60. It acts as a template strand for reverse transcriptase:
a. Viral RNA
b. Viral DNA
c. T-lymphocytes
d. Host DNA
61. The phenomenon of transcription in HIV life cycle occurs in:
a. Cytoplasm
b. Nucleus
c. Inside viral capsid
d. None of these
62. Attachment of HIV DNA with host DNA is done via action of:
a. Protease
b. Integrase
c. Nuclease
d. Reverse transcriptase
63. HIV can be transmitted by all of the following sources except:
a. Breast feeding
b. Intimate sexual contact
c. Saliva
d. Contact with blood
64. Uncoating of HIV virion occurs:
a. In nucleus
b. Outside the cell
c. At any place
d. In cytoplasm
65. Protein of HIV that helps in its fusion with T cell:
a. gp141
b. gp31
c. gp41
d. gp120
66. Common among all viruses during their infection cycles:
a. Transcription in nucleus
b. DNA Replication in cytoplasm
c. Reverse transcription in cytoplasm
d. Translation in cytoplasm
67. Receptors proteins present on T helper lymphocytes where an HIV particle binds:
a. CD2
b. CD4
c. CDI
d. CD8
68. Which of the following cells does HIV mainly infect?
a. T-helper lymphocytes
b. T-killer lymphocytes
c. B-memory cells
d. B-plasma cells
69. AIDS is caused by:
a. Virus
b. Bacteria
c. Alga
d. Fungi
70. Which one is not an opportunistic disease related to HIV infection?
a. Pulmonary tuberculosis
b. Destruction of body immune system
c. Toxoplasmosis
d. Recurrent pneumonia
71. The main target of HIV in AIDS is:
a. Red blood Cells
b. Liver celle
c. Heiper T-lymphocytes
d. B-lymphocytes
72. Numerous oppertunistic diseases might attack a person suffering from which of the following diseases:
a. lnfluensa
b. Measles
c. AIDS
d. Hepatitis A
73. Which of the following is not true about human immunodeficiency virus?
a. It does not cause AIDS
b. It is a retrovirus
c. It causes deficiency of the human immune system
d. It is surrounded by an envelope