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Smoking and Health

In this worksheet, students will explore the health risks associated with smoking and what effect it can have on the lungs.

'Smoking and Health' worksheet

Key stage:  KS 3

Curriculum topic:  Biology: Structure and Function of Living Organisms

Curriculum subtopic:  Health

Difficulty level:  

Worksheet Overview

QUESTION 1 of 10

We all know that smoking can damage health, but what is it that is in those tiny sticks that can cause so much harm?


Well, to give you an idea......

 

 

These substances are all present in the dried tobacco that is burned when smokers inhale the smoke from their cigarette.  Cigarettes, cigars and pipe tobacco, and the smoke they produce, contain a variety of dangerous chemicals which can affect the body in different ways. 


 

 

Nicotine    

Nicotine is the addictive drug that causes smokers to crave cigarettes. It occurs naturally in the tobacco plant to help protect it from insects. When it enters the human body, it stimulates the nervous system, causing an increase in pulse rate and blood pressure.


 
Carbon Monoxide

When tobacco is burned, the gas carbon monoxide (dubbed 'the silent killer' due to its colourless, odourless and toxic nature) is released.  It is an extremely dangerous gas. Once in the bloodstream, it prevents the blood from carrying oxygen properly around the body.  


 
Tar

The residue (remains) of the smoke from burning tobacco is tar.  Tar is a sticky, dark brown substance that can accumulate and coat the airways and lungs. This tar coating then makes gas exchange in the alveoli very difficult.

 


 
In the lungs, the cells that line the bronchi produce sticky mucus, which traps dirt and microbes. These cells have tiny hair-like cilia, which normally move the mucus and trapped dirt out of the lungs. The smoke and tar from cigarettes, however, damages the cilia, causing smokers to cough more in order to get rid of the mucus. This can ultimately lead to bronchitis.
 
Tar also contains other harmful substances, including carcinogens (chemicals that can cause cancer).


 
Smoking and Cancer    

Cancer is an uncontrolled growth of cells resulting in the formation of a tumour.

 

 

Tobacco and cigarettes are known to cause cancer in the lungs, airways, throat, voicebox and mouth. 9 out of 10 people who die from lung cancer are smokers.


 
Smoking and Pregnancy

 


Smoking can affect the growth of an unborn child during all stages of pregnacy. When the mother's blood is polluted with carbon monoxide, the unborn child only receives around 90% of the oxygen that it should. Nicotine in the mother's bloodstream also reduces the amount of glucose going to the baby, resulting in poor brain development and tissue growth.  

 

We will now answer some questions on the effects of smoking.

Which of the following is the addictive drug found in tobacco plants?

alcohol

cannabis

nicotine

nickel

In the answer box below, write the two words which complete this sentence:


When nicotine enters the blood stream, it stimulates the nervous system, causing an increase in pulse rate and ________  ___________.

Which of the following gases is known as 'the silent killer'?

oxygen

carbon monoxide

carbon dioxide

nitrogen

What is a carcinogen?

a substance that is flammable

a substance containing carbon

a substance that you put in cars

a substance that can cause cancer

What is the name given to the tiny hair-like structures that sweep away mucus and trapped dirt from the lungs?

saliva

villi

cilia

cigarettes

Which of the following are found in cigarettes and cigarette smoke? Tick all that apply.

tobacco

tar

arsenic

industrial solvent

nicotine

ammonia

Smoking during pregnancy can prevent an unborn child from receiving enough of which of the following things? Select three boxes.

oxygen

water

blood

glucose

energy

What substance in cigarettes causes cancer?

nicotine

carbon monoxide

tar

What is cancer?

a group of cells that grow under control

uncontrolled cell growth that leads to a tumour

a tar coating

Tick two types of cancer that are caused by smoking.

lung cancer

skin cancer

throat cancer

bladder cancer

  • Question 1

Which of the following is the addictive drug found in tobacco plants?

CORRECT ANSWER
nicotine
EDDIE SAYS
Nicotine is the addictive drug found in tobacco plants. The plant produces it to stop insects from eating it's leaves.
  • Question 2

In the answer box below, write the two words which complete this sentence:


When nicotine enters the blood stream, it stimulates the nervous system, causing an increase in pulse rate and ________  ___________.

CORRECT ANSWER
blood pressure
EDDIE SAYS
Nicotine is a stimulant drug and, as a result, causes an increase in pulse rate and blood pressure.
  • Question 3

Which of the following gases is known as 'the silent killer'?

CORRECT ANSWER
carbon monoxide
EDDIE SAYS
Carbon monoxide is known as the silent killer due to its toxic nature and the fact that it is both colourless and odourless and, therefore, unable to be detected easily.
  • Question 4

What is a carcinogen?

CORRECT ANSWER
a substance that can cause cancer
EDDIE SAYS
A carcinogen is defined as a substance that is capable of causing cancer in living tissue.
  • Question 5

What is the name given to the tiny hair-like structures that sweep away mucus and trapped dirt from the lungs?

CORRECT ANSWER
cilia
EDDIE SAYS
Cilia have a slow, waving movement and are found inside the lungs. They are designed to keep airways clear from dirt and mucus, allowing us to breathe easily.
  • Question 6

Which of the following are found in cigarettes and cigarette smoke? Tick all that apply.

CORRECT ANSWER
tobacco
tar
arsenic
industrial solvent
nicotine
ammonia
EDDIE SAYS
All of the above! Cigarettes are made up of hundreds of different chemicals including toxic and even radioactive substances.
  • Question 7

Smoking during pregnancy can prevent an unborn child from receiving enough of which of the following things? Select three boxes.

CORRECT ANSWER
oxygen
glucose
energy
EDDIE SAYS
Carbon monoxide causes a decrease in the blood's ability to carry oxygen.
Nicotine reduces the amount of glucose that reaches the growing child, therefore reducing the amount of energy.
  • Question 8

What substance in cigarettes causes cancer?

CORRECT ANSWER
tar
EDDIE SAYS
Tar is a carcinogen, i.e. a substance causing cancer.
  • Question 9

What is cancer?

CORRECT ANSWER
uncontrolled cell growth that leads to a tumour
EDDIE SAYS
Cancer is an uncontrolled cell growth that leads to a tumour.
  • Question 10

Tick two types of cancer that are caused by smoking.

CORRECT ANSWER
lung cancer
throat cancer
EDDIE SAYS
Lung and throat cancer are caused by smoking.
---- OR ----

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