Quiz: Tobacco and Cancer: How Smoking Harms the Body

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1. Q1.According to this article, how many chemicals in tobacco smoke are known to cause cancer?

   AOnly one — nicotineBAbout fiveCAt least 70DNone have been identified

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2. Q2.According to this article, how does tobacco lead to cancer?

   AChemicals in tobacco smoke damage the DNA in cells, and over time damaged cells can grow out of controlBTobacco heats the lungs until cells meltCNicotine directly turns healthy cells into tumors overnightDSmoke blocks oxygen, which instantly creates cancer cells

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3. Q3.According to this article, why does tobacco cause cancer in so many parts of the body beyond the lungs?

   ABecause smoke is swallowed whole into the stomachBBecause tobacco only affects the lungs, and other links are mythsCBecause cancer always starts in the lungs and then movesDBecause harmful chemicals pass from the lungs into the blood, which carries them all over the body

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4. Q4.According to this article, is there a safe form or amount of tobacco?

   ACigars and pipes are safe alternatives to cigarettesBNo — there is no safe form of tobacco and no safe level of smokingCOccasional light smoking carries no riskDSmokeless tobacco is a safe swap for smoking

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5. Q5.According to this article, what happens to cancer risk when a person quits tobacco?

   ARisk stays exactly the same for lifeBRisk drops only for people who quit before age 30CThe risk of many cancers begins to drop over time, and benefits grow the longer you stay tobacco-freeDRisk goes up temporarily before improving

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This quiz checks understanding of educational content only. It is not medical advice. Read: Tobacco and Cancer: How Smoking Harms the Body.