BIOLOGYA PAPER 1 QUESTION
PAPER
, Oxford Cambridge and RSA
Friday 20 May 2022 – Afternoon
AS Level Biology A
H020/01 Breadth in biology
Time allowed: 1 hour 30 minutes
You can use:
* 9 0 7 1 5 0 4 7 6 7 *
• a ruler (cm/mm)
• a scientific or graphical calculator
* H 0 2 0 0 1 *
Please write clearly in black ink. Do not write in the barcodes.
Centre number Candidate number
First name(s)
Last name
INSTRUCTIONS
• Use black ink. You can use an HB pencil, but only for graphs and diagrams.
• Write your answer to each question in the space provided. If you need extra space use
the lined pages at the end of this booklet. The question numbers must be clearly shown.
• Answer all the questions.
• Where appropriate, your answer should be supported with working. Marks might be
given for using a correct method, even if your answer is wrong.
INFORMATION
• The total mark for this paper is 70.
• The marks for each question are shown in brackets [ ].
• This document has 24 pages.
ADVICE
• Read each question carefully before you start your answer.
© OCR 2022 [601/4261/3] OCR is an exempt Charity
DC (ST/SG) 301080/4 Turn over
, 2
SECTION A
You should spend a maximum of 25 minutes on this section.
Write your answer for each question in the box provided.
Answer all the questions.
1 The graph below shows the results of an osmosis experiment investigating the effect of changing
the concentration of sodium chloride (NaCl) on mass of potatoes.
10
5
Percentage
change in 0
mass 0.1 0.2 0.3 0.4 0.5 0.6
–5 NaCl concentration
(mol dm–3)
–10
Which concentration of NaCl causes equal movement of water into and out of the potato?
A 0.36 mol dm–3
B 0.40 mol dm–3
C 0.42 mol dm–3
D 0.62 mol dm–3
Your answer [1]
© OCR 2022