GCEBiology
BH422/03: Practical
skills in biologyA
Level
OXFORD
CAMBRIDGE
AND RSA
2024
OCR 2024
, Oxford Cambridge and RSA
Wednesday 19 June 2024 – Morning
A Level Biology B (Advancing Biology)
H422/03 Practical skills in biology
Time allowed: 1 hour 30 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 60.
• 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 16 pages.
ADVICE
• Read each question carefully before you start your answer.
OCR is an exempt Charity
Turn over
, 2
1
(a) ATP, DNA and tRNA are molecules that have some similarities but several differences in
structure.
The table lists structural features of ATP, DNA and tRNA.
Use ticks (✓) to indicate the structural features that are present in ATP, DNA and tRNA.
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller DistinctionGuruHuan1. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.79. You're not tied to anything after your purchase.
