AQA
A-Level
BIOLOGY
3.2a Cells
2.1-2.3 | Cell Structure
Time allowed
62 minutes
QUESTION PAPER
Score Percentage
/52 %
4.1 | CELL BIOLOGY | QUESTION PAPER 1 1
, Starch and cellulose are two important plant polysaccharides.
The following diagram shows part of a starch molecule and part of a cellulose molecule.
(a) Explain the difference in the structure of the starch molecule and the cellulose
molecule shown in the diagram above.
(2)
........................................................................................................................
........................................................................................................................
(b) Starch molecules and cellulose molecules have different functions in plant cells.
Each molecule is adapted for its function.
Explain one way in which starch molecules are adapted for their function in plant
cells.
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........................................................................................................................
........................................................................................................................
(2)
(c) Explain how cellulose molecules are adapted for their function in plant cells.
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(Extra space) ................................................................................................
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........................................................................................................................
(3)
(Total 7 marks)
A-Level
BIOLOGY
3.2a Cells
2.1-2.3 | Cell Structure
Time allowed
62 minutes
QUESTION PAPER
Score Percentage
/52 %
4.1 | CELL BIOLOGY | QUESTION PAPER 1 1
, Starch and cellulose are two important plant polysaccharides.
The following diagram shows part of a starch molecule and part of a cellulose molecule.
(a) Explain the difference in the structure of the starch molecule and the cellulose
molecule shown in the diagram above.
(2)
........................................................................................................................
........................................................................................................................
(b) Starch molecules and cellulose molecules have different functions in plant cells.
Each molecule is adapted for its function.
Explain one way in which starch molecules are adapted for their function in plant
cells.
........................................................................................................................
........................................................................................................................
........................................................................................................................
........................................................................................................................
(2)
(c) Explain how cellulose molecules are adapted for their function in plant cells.
........................................................................................................................
........................................................................................................................
........................................................................................................................
........................................................................................................................
........................................................................................................................
........................................................................................................................
(Extra space) ................................................................................................
........................................................................................................................
........................................................................................................................
(3)
(Total 7 marks)
