Biology 12 Chapter - 20 Reproduction - 24

Biology 12 Chapter - 20
Reproduction - 24

1. Where did NOT doctors of USA report first cases of AIDS?

a) All of the above
b) Scotland
c) New York
d) San Francisco

2. How many people are living with AIDS worldwide?

a) 48 million

b) 42 million

c) 40 million
d) 46 million

3. How many deaths are related to AIDS every year?
a) 2 million

b) 3 million

c) 4 million
d) 1 million

4. Which cells are destroyed by HIV?

a) T lymphocytes

b) B lymphocytes
c) Leukocytes

d) Eosinophils

5. Which cells are involved in immune system?

a) Erythrocytes
b) Lymphocytes
c) Macrophages
d) Leukocytes

6. HIV virus is transferred from one person to other by………..?

a) All of the above

b) Milk feeding

c) Sexual contact
d) Blood

7. What should we do to prevent transmission of HIV?

a) Refrain from sexual activity
b) Avoid use of used syringes
c) Routine testing for HIV

d) All of the above

8. At what stage of symptoms of Syphilis do rashes on palms of hands and soles of feet appear?

a) Primary
b) Secondary

c) Quaternary
d) Tertiary

9. At what stage of symptoms of Syphilis do hard chancre develops?

a) Quaternary
b) Primary

c) Tertiary

d) Secondary

10. At what stage of symptoms of Syphilis do gummas appear on skin or internal organs?a) Primary
b) Secondary

c) Tertiary

d) Quaternary

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