Cancer and AIDS

Question 1

List 4 causes of cancer

Answer 1

• Ionising radiations like X-rays and gamma rays and non-inoinzing radiations like UV cause DNA damage leading to neoplastic transformation.
• Chemical carcinogens present in tobacco smoke.
• Oncogenic viruses have genes called viral oncogenes.
• Several genes called cellular oncogenes (c-onc) or proto oncogenes in normal cells which get activated used certain conditions leading to oncogenic transformation.

Question 2

Detection of cancer is done by

Answer 2

• biopsy
• radiography
• CT
• MRI

Question 3

Most cancers are treated by combination of

Answer 3

Surgery, radiotherapy and chemotherapy

Question 4

Symptoms of AIDS

Answer 4

Fever, diarrhoea and weight loss

Question 5

Due to decrease in number of helper T lymphocytes, AIDS patient starts suffering from infections due to

Answer 5

Bacteria especially Mycobacterium, viruses, fungi and even parasites like Toxoplasma