Assessment Test
Mixt Tutor Academy
Grade 11
Name: _____________________
Marks: 35
1 Fig. 1.1 shows some cells from the lining of the trachea.
Fig. 1.1
(a) Describe the functions of the nucleus and cell membrane.
nucleus
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cell membrane
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(b) The cells in Fig. 1.1 form a tissue. Define the term tissue.
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(c) The goblet cell secretes mucus. Describe the role of mucus and cilia in the trachea.
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[Total: 8]
6.(a) Fig. 6.1 shows diagrams of the circulatory systems of a fish and a mammal. The arrows
show the direction of blood flow through the circulatory systems.
Fig. 6.1
(i) State the names of the structures labelled Q, T, W and X.
Q .......................................................................................................................................
T ........................................................................................................................................
W .......................................................................................................................................
X ........................................................................................................................................ [4]
(ii) State the name of structure V on Fig. 6.1 and describe its function.
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(iii) Fig. 6.1 shows that fish and mammals have different types of circulation. State why the fish
circulation is called a single circulation.
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(iv) Explain the advantages of the double circulation of the mammal.
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(b) The blood vessels that supply the heart muscle can become blocked.
(i) State the name of the blood vessels that supply the heart muscle.
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(ii) State one way in which blockages in these blood vessels can be treated.
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[Total: 11]
6 (a) Fig. 6.1 shows part of the human gas exchange system.
Fig 6.1
(i) Table 6.1 shows the names of some parts of the human gas exchange system, their functions and the
letters in Fig. 6.1 that identify the parts. Complete Table 6.1.
Table 6.1
[7]
(ii) Describe and explain how the alveoli are adapted for gas exchange.
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(b) (i) Explain the differences in composition between inspired and expired air.
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(ii) Physical activity changes the concentration of carbon dioxide in the body. State where this change is
detected and how the body responds to the change.
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(iii) State the name of a solution that can be used to test for the presence of carbon dioxide gas.
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[Total: 16]