GCSE Biology Blood Exam-Style Questions

Question 1

Q1. (2 marks) Define the term 'viscosity'.

Question 2

Q2. (1 mark) Name the two main types of blood cells in humans.

Question 3

Q3. (3 marks) Explain how blood clots in the body.

Question 4

Q4. (2 marks) Give an example of a condition that affects the white blood cells.

Question 5

Q5. (4 marks) The following table shows the number of different blood cells in a sample of human blood:

Blood Cell Type

Number of Cells per mm3

Red blood cells

4.5 million

White blood cells

7,000

Calculate the percentage of white blood cells in this sample.

Question 6

Q6. (3 marks) The graph below shows the heart rate and oxygen saturation levels of a person during exercise.

[Insert graph description here]

Explain how the body's circulatory system responds to exercise.

Question 7

Q7. (3 marks) Explain how blood transfusions can be used to treat medical conditions.

Question 8

Q8. (2 marks) Give one way in which blood group compatibility is important in medicine.

Question 9

Q9. (6 marks) A patient has a haemoglobin concentration of 12 g/dL. The normal range for haemoglobin is 13-17 g/dL.

a) Calculate the percentage difference between the patient's haemoglobin concentration and the lower end of the normal range. (3 marks)

b) Explain one potential consequence of low haemoglobin concentration. (3 marks)

Question 10

Q10. (6 marks) Discuss the role of the lymphatic system in relation to blood.

Platelets

250,000

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