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Questions and Answers
What is one of the primary effects of smoking on the respiratory system?
What is one of the primary effects of smoking on the respiratory system?
Which of the following diseases is directly linked to smoking?
Which of the following diseases is directly linked to smoking?
What substance in cigarette smoke is known for its addictive properties?
What substance in cigarette smoke is known for its addictive properties?
How does smoking affect the efficiency of gas exchange in the lungs?
How does smoking affect the efficiency of gas exchange in the lungs?
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What is a characteristic symptom of chronic bronchitis caused by smoking?
What is a characteristic symptom of chronic bronchitis caused by smoking?
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What percentage of deaths worldwide are related to smoking?
What percentage of deaths worldwide are related to smoking?
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How much shorter is the life expectancy for smokers compared to non-smokers?
How much shorter is the life expectancy for smokers compared to non-smokers?
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Which of the following is NOT a disease associated with smoking?
Which of the following is NOT a disease associated with smoking?
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What substance in cigarettes is known to be addictive?
What substance in cigarettes is known to be addictive?
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Which of the following is a physical effect of smoking on appearance?
Which of the following is a physical effect of smoking on appearance?
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Why are e-cigarettes considered harmful to health?
Why are e-cigarettes considered harmful to health?
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Which chronic respiratory issue is commonly linked to smoking?
Which chronic respiratory issue is commonly linked to smoking?
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What effect does smoking have on skin aging?
What effect does smoking have on skin aging?
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What effect does tar from cigarette smoke have on gas exchange?
What effect does tar from cigarette smoke have on gas exchange?
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How does carbon monoxide affect blood oxygen levels in smokers?
How does carbon monoxide affect blood oxygen levels in smokers?
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What structural change occurs in the lungs due to emphysema?
What structural change occurs in the lungs due to emphysema?
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What is a characteristic of chronic bronchitis?
What is a characteristic of chronic bronchitis?
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Which of the following best describes the impact of smoking on gas exchange mechanisms?
Which of the following best describes the impact of smoking on gas exchange mechanisms?
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Which chemical in cigarette smoke is known to affect the elasticity of lung tissues?
Which chemical in cigarette smoke is known to affect the elasticity of lung tissues?
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What is a common respiratory disease linked to long-term smoking?
What is a common respiratory disease linked to long-term smoking?
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How do the walls of air sacs change as a result of smoking?
How do the walls of air sacs change as a result of smoking?
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Study Notes
Gas Exchange in Animals
- Gas exchange is a vital process for animals, not just plants.
- Practical 7.12 studies carbon dioxide uptake/release in mealworms.
Practical 7.12 Aim
- To determine changes in carbon dioxide levels in mealworms.
Practical 7.12 Materials
- Boiling tubes (2)
- Forceps (2)
- Cotton thread (1)
- Test tube rack (1)
- Measuring cylinder (10 cm³) (1)
- Mealworm (1)
- Hydrogen carbonate indicator (1)
- Plastic vial with small holes (1)
Practical 7.12 Procedure
- Add 3cm³ of hydrogen carbonate indicator to two boiling tubes (A & B).
- Note the initial colour of the indicator.
- Place mealworms in a plastic vial with holes and insert into tube A (ensuring mealworms don't touch indicator).
- Seal both tubes and leave for an hour.
- Record the colour change in each tube after 1 hour.
Practical 7.13 Aim
- To study the uptake or release of oxygen in mealworms.
Practical 7.13 Materials
- Boiling tubes (2)
- Capillary tubes fitted into stoppers (2)
- Wire gauze (2)
- Ruler (1)
- Mealworms (2)
- Soda lime (2 bags)
Practical 7.13 Procedure
- Use the given apparatus and follow the instructions to conduct the experiment.
- Measure the changes in the experiment tubes.
Practical 7.14 Aim
- To compare the oxygen, carbon dioxide, and water vapour content of inhaled and exhaled air.
Practical 7.14 Materials
- Gas jar with cover plates (2)
- Forceps (1 pair)
- Measuring cylinder (10cm³) (1)
- Mirror (1)
- Water trough (1)
- Dry cobalt chloride paper (1)
- Stopwatch (1)
- Candle (1)
- Insulating mat (1)
- Hydrogencarbonate indicator (1)
Section Summary
- Exhaled air contains less oxygen, and more carbon dioxide and water vapour than inhaled air
- Gas exchange supplies oxygen to body cells and removes carbon dioxide.
- The exchange in humans happens in the air sacs of the lungs.
- Smoking reduces gas exchange efficiency and harms health.
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Description
Test your knowledge on the impact of smoking on the respiratory system with questions that cover addiction, diseases, and physical effects. Explore key facts concerning smoking-related health issues and their consequences on lifespan and appearance.
