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B2 1.1d – Student worksheet
Cell structure and function
1
2
Which of the following parts of a plant cell contain chromosomes? (1 mark)
a
mitochondria
b
cytoplasm
c
nucleus
d
ribosomes
Which of the following features is found in a white blood cell but not in a red blood cell?
(1 mark)
a
nucleus
b
cytoplasm
c
cell membrane
d
mitochondria
3
Which part of an animal cell controls the passage of substances into and out of the cell?
(1 mark)
4
Which is the smallest and which is the largest organelle in human cells? (2 marks)
5
Name two different types of animal cell and give two ways in which their structure is different.
(4 marks)
6
Some living cells were broken into fragments and arranged in two groups:
Group 1 – all the fragments lack a nucleus.
Group 2 – all the fragments have a nucleus.
Each group is maintained under the same conditions and examined at regular intervals.
Group 1
Group 2
fragments examined
200
200
surviving 24 hours
160
158
surviving 48 hours
120
148
surviving 72 hours
60
144
surviving 96 hours
6
144
Which of the following conclusions is the best? (1 mark)
7
a
The nucleus is normally needed for the continued life of the cell.
b
Both groups of cells have an equal chance of surviving.
c
Cell fragments cannot live long.
d
The removal of the nucleus damages the cell cytoplasm of the cell fragments.
Copy and complete the following table. (5 marks)
Cell structure
Function
nucleus
a
b
mitochondria
controls the movement of substances
into and out of the cell
c
d
protein synthesis
cytoplasm
e
Sheet 1 of 1
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