F4 Biology Test 2:
The cell as the basic unit
of life
A. Multiple
Choice (10marks)
Q.
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1
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2
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3
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4
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5
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6
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7
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8
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9
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10
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Answer
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D
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C
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B
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B
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B
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D
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C
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D
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A
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C
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Wrong no.
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B Conventional questions
1 (a) A light microscope
is cheaper than an electron microscope. /
Operation of a light
microscope requires less training. /
Preparation
of the specimen for examination under a light microscope is easier / quicker.
(any 2 or other
correct answers) 1×2
(b) The abnormal cells
are larger than the normal cells. /
The nuclei of the
abnormal cells are larger than those of the normal cells. /
The abnormal cells have two
nuclei whereas the normal cells have one.
(any 2 or other correct
answers) 1×2
(c) To show the cell structures clearly. 1
2 (a) X: It is the rough
endoplasmic reticulum and is involved in the synthesis of proteins. 1
Y: It is the nucleus and it
controls activities of the cell. 1
Z: It is the mitochondrion
and is the site where the energy-releasing stage of respiration takes
place. 1
(b) 8 mm / 500 nm =
16 000 1×2
(c) Transmission electron microscope 1
(d) The images produced are of higher magnifications. 1
The images produced are of
higher resolution. / More details can be shown. 1
3 (a) Cell X is a green leaf cell. Cell Y is a
human cheek cell. 1
Reason: Cell X has a regular
shape. / Cell X has a cell wall. 1
(b) A:
It controls the movement of substances in and out of the cell. 1
B: It holds many organelles. / It is the site
for many chemical reactions. / It allows the movement and transport of
materials inside the cell. 1
(c) Both
cells X and Y are eukaryotic cells 1
because
they have a true nucleus. 1
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