AQA GCSE · Biology 8461

Communicable diseases: Practice Questions

5 multiple-choice questions marked as you go, and 5 written questions with worked solutions. All on Communicable diseases.

10 questions25 marksFree, no account

Question 1

1 mark

Which type of pathogen is responsible for causing the disease malaria?

Question 2

1 mark

How does the Tobacco Mosaic Virus (TMV) affect the growth of a plant?

Question 3

1 mark

Explain how the malarial protist is transmitted and how the spread of the disease is most effectively controlled based on its life cycle.

Question 4

1 mark

Which of the following is a symptom specifically associated with a Salmonella infection, according to the AQA specification?

Question 5

1 mark

How do viruses typically cause damage to the human body once they have entered a host?

Question 6

2 marks

State two ways that the spread of malaria can be controlled by reducing the population of its vector or avoiding contact with it.

Write your answer out first, then check it against the worked solution.

Question 7

3 marks

Describe two different non-specific human defence systems that act as physical or chemical barriers to prevent pathogens from entering the body.

Write your answer out first, then check it against the worked solution.

Question 8

2 marks

State one way that a bacterial pathogen can cause a person to feel ill once it has entered the human body.

Write your answer out first, then check it against the worked solution.

Question 9

5 marks

Pathogens such as bacteria and viruses can cause infectious diseases in humans.

a) State two ways in which pathogens can be spread from one person to another.
b) Explain how bacteria and viruses cause damage to the human body once they have entered.
c) Describe one way in which the spread of gonorrhoea can be reduced or prevented.

Write your answer out first, then check it against the worked solution.

Question 10

8 marks

Vaccination is a critical method for reducing the spread of communicable diseases such as measles and Salmonella.

a) Explain, in detail, how a vaccine containing an inactive form of a pathogen protects an individual against a future infection by the same live pathogen.

b) In the mid-20th century, the first vaccine for a specific bacterial disease was tested. In a clinical trial, \(2000\) volunteers were given the vaccine and \(2000\) were given a placebo. After one year, \(12\) people in the vaccine group developed the disease compared to \(84\) people in the placebo group. Calculate the percentage decrease in the incidence of the disease for the vaccinated group compared to the placebo group.

c) Explain why the emergence of antibiotic-resistant strains of bacteria is a significant concern for global health, and state one way doctors can help reduce the rate of this development.

Write your answer out first, then check it against the worked solution.

* The content provided by thinka is generated by AI and may not always be accurate or up-to-date. Please use it as a supplementary resource and verify with official materials.

You've seen the model answer. Now get yours marked.

This page can show you how a good answer looks. It cannot tell you what your answer was missing. thinka marks your written work against the real mark scheme in about 15 seconds.

Get My Answers Marked Back to the notes

Want more questions like these? Get a fresh set on this topic, marked as you go.