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10.4) Biological Consequences of Smoking
271. Which organ is at the highest risk of developing cancer due to smoking?
(A) Liver
(B) Lungs
(C) Intestines
(D) Heart
(A) 10
(B) 25
(C) 69
(D) 100
273. What is the main component of the particulate matter inhaled by a smoker?
(A) Nicotine
(B) Carbon monoxide
(C) Benzene
(D) Tar
274. Which chemical in cigarettes is known to increase heart rate and blood pressure?
(A) Nicotine
(B) Tar
(C) Benzene
(D) Formaldehyde
275. What does carbon monoxide in cigarette smoke combine with in the blood?
(A) White blood cells
(B) Red blood cells
(C) Platelets
(D) Plasma
276. Which chemical found in cigarettes is a major cause of blood cancer (leukaemia)?
(A) Benzene
(B) Formaldehyde
(C) Cadmium
(D) Arsenic
277. How many different metals are found in cigarette smoke?
(A) 10
(B) 20
(C) 30
(D) 40
278. Which radioactive compounds are found in cigarettes?
(A) Only lead
(B) Multiple carcinogens
(C) Only arsenic
(D) Only cadmium
279. During exercise, what increases to meet the body's demand for more oxygen?
(A) Heart rate
(B) Blood pressure
(C) Rate and depth of breathing
(D) Platelet count
280. What part of the brain detects increased levels of carbon dioxide in the blood?
(A) Cerebellum
(B) Cerebrum
(C) Medulla
(D) Hypothalamus
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