Blood (Cambridge O Level Biology)

Exam Questions

46 mins11 questions
1a
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1 mark

Fig. 1 shows a section through a blood vessel.

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Fig. 1

Identify the type of blood vessel shown in Fig. 1.

1b
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3 marks

Red blood cells are different to white blood cells.

State three ways in which a red blood cell is different to a white blood cell.

1c
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4 marks

Blood has many components.

(i)

State the name of the liquid component of blood.

[1]

(ii)

State three substances that are transported in the liquid component of blood.

[3]

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2a
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3 marks

Blood circulates around the body in arteries, veins and capillaries.

Place ticks (✓) in the correct boxes in Table 1 to show the features of arteries.

Table 1

structure and function arteries
carries blood at high pressure  
carries blood towards the heart  
has a thick wall  
has a narrow lumen  
has valves present throughout the vessel  

2b
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3 marks

Fig. 1 shows a photomicrograph of a capillary with red blood cells passing through it.

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Fig. 1

(i)
State the function of the red blood cells shown in Fig. 1.

[1]

(ii)

Red blood cells are one component of blood.

State the names of two other components of blood.

[2]

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1a
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6 marks

Fig. 1 shows a photomicrograph of human blood.

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Fig. 1

Describe the differences in appearance and the functions of the three cells labelled in Fig. 1.

1b
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3 marks
Fig. 2 shows some of the stages of blood clotting.

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Fig. 2

(i)

Complete Fig. 2 by filling in the two empty boxes.

[1]

(ii)

State two roles of blood clotting.

[2]

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2a
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3 marks

Fig. 1 shows a photomicrograph of some red blood cells.

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Fig. 1

(i)
State the function of a red blood cell.

[1]

(ii)
State two ways in which a red blood cell is adapted to its function.
[2]
2b
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1 mark

State the name of a component of blood that is responsible for clotting.

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1a
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2 marks

The blood has many components.

Fig. 1 shows a micrograph of a blood smear. 

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Fig. 1

On the diagram, identify a red blood cell and a white blood cell. 

1b
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4 marks

Platelets are a component of blood that have an important role in blood clotting. 

Describe the process of blood clotting by platelets. 

1c
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3 marks

Blood clots can sometimes form in veins around the body. This is called a venous thromboembolism (VTE) and can be associated with postoperative complications following surgery.

graph

Calculate the percentage decrease in VTE death rates between 2001 and 2017.

1d
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4 marks

Veins are a type of blood vessel found in mammals. 

Compare the structure and function of veins with that of arteries.

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