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IGCSE Biology9.4 BloodQuestion Bank

9.4 Blood

Question 1

Question 1(c)

Question 1(c)(ii)

(a)
(i)

Mitochondria require oxygen to release energy. Oxygen is transported to cells in the eye by red blood cells.

State the name of the molecule in red blood cells that carries oxygen.

[ 1 ]

Question 1

Question 1(b)

(a)

State the name of the component of blood that promotes blood clotting.

[ 1 ]

Question 1

Question 1(b)

Question 1(b)(i)

(a)
(i)

Blood transports nutrients.

State the component of the blood that transports nutrients.

[ 1 ]

Question 1(b)(iii)

(ii)

Amino acids are used to make proteins.

State two examples of proteins that are found in the blood.
1

2

[ 2 ]

Question 1

[Maximum number: 1]

Fig. 1.1 is a diagram of an animal cell.

Fig. 1.1

Fig. 1.1

Question 1(b)

Question 1(b)(iii)

(a)
(i)

State the name of the molecule in red blood cells that combines with oxygen.

[ 1 ]

Question 1

[Maximum number: 3]

Fig. 1.1 shows two photomicrographs of a cross-section of trachea.

Fig. 1.1

Fig. 1.1

Question 1(d)

(a)

Sickle-cell anaemia is a disease that reduces the delivery of oxygen to tissues.

Explain why.

[ 3 ]

Question 1

[Maximum number: 1]

Fig. 1.1 and Fig. 1.2 show two images of villi.
Fig. 1.1 shows a surface view of many villi viewed through a scanning electron microscope.
Fig. 1.2 shows a section of one villus viewed through a light microscope.

Fig. 1.1

Fig. 1.1

Fig. 1.2

Fig. 1.2

Villi are found in the small intestine.

Question 1(d)

Question 1(d)(i)

(a)
(i)

Blood transports nutrients.

State the component of the blood that transports nutrients.

[ 1 ]

Question 2

[Maximum number: 2]

Many researchers are studying the structure and function of genes.

Question 2(d)

(a)

Proteins are also found in the blood.

State the names of two proteins found in the blood.
1

2

[ 2 ]

Question 2

Question 2(a)

(a)

Fig. 2.1 shows the transfer of materials between blood and tissues.

Fig. 2.1

Fig. 2.1

[ 2 ]

Question 2(a)(i)

(i)

Complete Table 2.1 by:
- stating the names of the fluids
- writing yes if the fluid contains red blood cells or no if the fluid does not contain red blood cells.

Table 2.1

Table 2.1

[ 2 ]

Question 3

Question 3(b)

(a)

Fig. 3.1 is a diagram of alveoli and associated blood vessels.

Fig. 3.1

Fig. 3.1

[ 1 ]

Question 3(b)(ii)

(i)

State the name of the component of blood that transports oxygen.

[ 1 ]

Question 2

[Maximum number: 1]

Red blood cells contain the protein haemoglobin.

Question 2(a)

Question 2(a)(ii)

(a)
(i)

State the role of haemoglobin.

[ 1 ]
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