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A-Level Biology Paper 1 Predicted Paper 2023 attached with marking scheme $24.59   Add to cart

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A-Level Biology Paper 1 Predicted Paper 2023 attached with marking scheme

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AQA A-Level Biology Paper 1 Predicted Paper 2023 attached with markingscheme Name …………………………………………………………………… Date ………………… 2 hours allowed. You may use a scientific calculator and a ruler with millimetre measurements. ...

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  • May 5, 2023
  • 32
  • 2022/2023
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A level biology ppr1 2023




AQA
A-Level Biology Paper 1
Predicted Paper 2023 attached with markingscheme


Name ……………………………………………………………………
Date …………………


2 hours allowed.
You may use a scientific calculator and a ruler with millimetre
measurements.




Grade boundaries Possible Marks
Question
marks gained
These are VERY rough guesses! Getting a 1 9
B on this paper does not guarantee you 2 5
the same mark in the exam. 3 18
4 12
5 5
 A* 65% 6 11
7 12
 A 55%
8 8
 B 45%
9 11
 C 40% Total 91
 D 35%
 E 30%




1

,A level biology ppr1 2023




2

,A level biology ppr1 2023



01
To look for the presence of starch in potatoes, a student decided to
observe potato cells under a microscope. The image below shows starch
grains present in potato cells viewed at a magnification of x400.




a) Describe how the student could have prepared the sample to view
under the microscope.
[2 marks]




b) Describe how the student identified that these grains contained
starch.
[2 marks]




c) Calculate the actual length in µm of the starch grain between points
A and B.
[2 marks]




Actual length =

3

, A level biology ppr1 2023



d) Plants store excess glucose as starch in their cells. Glucose can also
be used to make cellulose to make cell walls.
Explain how the structure of cellulose make it adapted for its function.
[3 marks]




4

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