Carcinogens


Which is the most common cancer in the world?


A. Lung cancer

B. Hepatocellular carcinoma

C. Breast cancer

D. Squamous cell carcinoma



Which is the most common cancer in terms of death?


A. Lung cancer

B. Hepatocellular carcinoma

C. Breast cancer

D. Squamous cell carcinoma



Most important tumorigenic compounds in tobacco smoke


A. formaldehyde

B. acrylonitrile

C. cadmium

D. acrolein



Increased risk of breast cancer is associated with persistently elevated blood levels of


A. Progesterone

B. Estrogen

C. Androgen

D. Prolactin



Which is the second most common cancer after lung cancer?


A. Lung cancer

B. Hepatocellular carcinoma

C. Breast cancer

D. Squamous cell carcinoma



Major estrogen in humans


A. Estrone

B. Estradiol

C. 17β-Estradiol

D. Estriol



Cancer cells that are estrogen receptor positive may need estrogen to


A. Reduce growth

B. Increase growth

C. Require as treatment

D. Don’t respond to estrogen



True about ‘Tamoxifen‘ except


A. Lowers the risk of breast cancer

B. Increasing endometrial cancer risk

C. Selective estrogen receptor modulator

D. Stimulates estrogen’s effects on breast tissue



Exposure to aflatoxins is associated with an increased risk of


A. Bronchogenic carcinoma

B. Hepatocellular carcinoma

C. Ovarian cancer

D. Acute myeloid leukemia



Which of the following is best method to detect levels of aflatoxin in humans


A. AFB1-guanine adduct in the urine

B.AFB1-guanine adduct in the blood

C. AFB1-albumin adduct level in the urine

D. AFB1-albumin adduct level in the blood



Which is considered the most toxic aflatoxin?


A. Aflatoxin B1

B. Aflatoxin B2

C. Aflatoxin M1

D. Aflatoxin M2



Exposure to Nickel dust is associated with an increased risk of


A. Nasal cancer

B. Hepatocellular carcinoma

C. Renal cell carcinoma

D. Acute myeloid leukemi



Which types of bladder cancer is produced by Schistosomiasis?


A. Urothelial carcinoma

B. Squamous cell carcinoma

C. Adenocarcinoma

D. Sarcomatoid carcinoma of the bladder



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