Class XII Biology Lecture Notes

1. HUMAN HEALTH & DISEASES L08
1. Expand the following abbreviations:
a. MALT
b. CMI
c. AIDS
d. NACO
e. HIV
2. What are the various routes by which transmission of HIV virus takes place?
3. How is a cancerous cell different from a normal cell?
4. Explain metastasis.
5. List the harmful effects of alcohol and drug abuse.
6. What is a carcinogen? Name one chemical carcinogen with its target tissue.
7. Explain in detail the working of the cell mediated immune system (CMI).
8. Name the malarial parasite. Where do the gametocytes of this parasite develop? Give a flow
chart of its life cycle in this host.
9. Explain with detailed diagram the life cycle of HIV.
10. Explain the different ways to diagnose cancer.
11. Describe the different methods for treatment of cancer.
12. Give the full form of CT and MRI. How are they different from each other? How are they
used in cancer detection?
13. Why are cannabinoids banned in sports?
L01:
1. C, 2. A, 3. D, 4. Infectious: influenza and smallpox, Non- infectious: cancer and allergy.
L02:
1. c, 2. d, 3. c, 4. b
L03:
1. c, 2. d, 3. c, 4. d, 5. c, 6. d, 7. c, 8. d, 9. d, 10. b
L04:
1. a, 2. D, 3. B, 4. C, 5. D
L05:
1. c, 2. D, 3. D, 4. A, 5. D
L07:
1. c, 2. B, 3. B, 4. C, 5.