Home / iGCSE Biology (0610)-15.1 Drugs – iGCSE Style Questions Paper 3

iGCSE Biology (0610)-15.1 Drugs – iGCSE Style Questions Paper 3

IGCSE Biology (0610) Practice Questions Paper 3 - All Chapters
Question

(a) Antibiotics are a type of drug.

The box on the left contains the beginning of a sentence.

The boxes on the right show some sentence endings.

Draw lines to link the phrase ‘Antibiotic drugs’ on the left to three boxes on the right to make three correct sentences.

(b) Fig. 5.1 shows the number of antibiotic doses given per 1000 people per day in six different countries.

(i) Calculate the difference in the number of antibiotic doses given per 1000 people per day between country A and country F in Fig. 5.1.

number of antibiotic doses given per 1000 people per day in country A

number of antibiotic doses given per 1000 people per day in country F

(ii) Using the information in Fig. 5.1, state the two countries that gave the same number of antibiotic doses per 1000 people per day.

▶️ Answer/Explanation
Solution

(a)

Explanation: Antibiotics are specifically designed to target bacteria, not viruses. They work by interfering with bacterial cell processes (chemical reactions) like cell wall synthesis or protein production. Overuse can lead to antibiotic resistance, making them less effective. They are not used for coronary heart disease (which requires different medications) and are not the cause of rickets (a vitamin D deficiency condition).

(b)(i)

From the graph:

  • Country A = 42 doses
  • Country F = 22 doses
  • Difference = 42 – 22 = 20 doses

Explanation: The calculation involves reading the values from the bar graph for countries A and F, then finding the arithmetic difference between them. This shows country A uses nearly twice as many antibiotics per capita as country F.

(b)(ii)

Countries D and E gave the same number of antibiotic doses.

Explanation: By examining the graph, we can see that both countries D and E have bars of equal height, indicating they administer the same quantity of antibiotics per 1000 people daily. This visual comparison is key to identifying matching values in bar graphs.

Question

Fig. 6.1 shows a section of a bronchiole from the lungs of a person who never smoked cigarettes
(non-smoker) and a section of a bronchiole from a person who smoked cigarettes for several
years (smoker).
The two sections were taken from the same relative position in the lungs and are drawn to the
same scale.

(a) (i) Table 6.1 gives a comparison between the bronchiole of a non-smoker and a smoker.
Use Fig. 6.1 to complete Table 6.1.
An example has been done for you.

(ii) Identify two other ways in which the bronchiole in a non-smoker is different from the

bronchiole in a smoker.
1 ……………………………………………………………………………………………………………………….
………………………………………………………………………………………………………………………….
2 ……………………………………………………………………………………………………………………….
………………………………………………………………………………………………………………………….
(b) A person who smokes has a higher risk of lung infections than a person who does not smoke.
Use evidence from Fig. 6.1 to explain why the smoker has a higher risk of lung infections than
a non-smoker.
…………………………………………………………………………………………………………………………………
…………………………………………………………………………………………………………………………………
(c) State the name of two substances in tobacco smoke that are harmful.
1 ………………………………………………………………………………………………………………………………
2 ………………………………………………………………………………………………………………………………

Answer/Explanation

Ans:

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