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OXFORD CAMBRIDGE AND RSA 2024 GCE Biology A H420/01: Biological processes A Level ACTUAL QUESTION PAPER AND MARKING SCHEME (MERGED 2024)$7.89
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Wednesday 5 June 2024 – Afternoon
A Level Biology A
H420/01 Biological processes
Time allowed: 2 hours 15 minutes
You can use:
• a scientific or graphical calculator
• a ruler (cm/mm)
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 begiven
for using a correct method, even if your answer is wrong.
INFORMATION
• The total mark for this paper is 100.
• The marks for each question are shown in brackets [ ].
• Quality of extended response will be assessed in questions marked with an asterisk (*).
• This document has 36 pages.
ADVICE
• Read each question carefully before you start your answer.
OCR is an exempt Charity
Turn over
, 2
Section A
You should spend a maximum of 20 minutes on this section.
Write your answer to each question in the box provided.
1 Which statement about lipids is correct?
A Lipids are polar molecules.
B Lipids that contain fatty acids with carbon–carbon double bonds are liquid at room
temperature.
C Saturated fatty acids, which are present in some lipids, contain carbon–carbon doublebonds.
D The presence of carbon–carbon double bonds in fatty acids allows lipids to pack moreclosely
together.
Your answer [1]
2 Lipids, polysaccharides, nucleic acids and proteins are all macromolecules.
Which statement about macromolecules is correct?
A All macromolecules are formed in hydrolysis reactions.
B Lipids are not polymers, but polysaccharides, nucleic acids and proteins are polymers.
C Lipids are polymers of fatty acids and glycerol.
D Macromolecules all consist of repeating units of monomers.
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