Question

Tobacco smoke affect the gas exchange system. [4]
Name two components of tobacco smoke and describe their effect on lungs. Component 1 ________
Effect ________
Component 2 ________
Effect ________

Answer 1

Explanation:

Component 1: Tar

Effects: Stains teeth, fingernails and lung tissue

Component 2: Carbon monoxide

Effect: Reduce oxygen carring capacity of blood

Answer 2

Answer:

tar/ carcinogens ;

carcinogenic / can cause, lung cancer ;

sticks to/ blocks / damages, (named) air passages / alveoli/ cilia ;

(trigger) production of, more/ excess, mucus ;

(smoke) particles ;

trigger white blood cells ;

irritant/ causes asthma/ prone to infection ;

phagocytosis described ;

carbon monoxide ;

combines with haemoglobin (permanently) ;

reduced oxygen transport (of blood) ;