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Pearson Edexcel International Advanced Level International Advanced Subsidiary/Advanced Level UNIT 3: Practical Skills in Biology I Question paper May 2024$12.99
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Pearson Edexcel International Advanced Level International Advanced Subsidiary/Advanced Level UNIT 3: Practical Skills in Biology I Question paper May 2024
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Course
Pearson Edexcel International Advanced Level
Institution
Pearson Edexcel International Advanced Level
Pearson Edexcel International Advanced Level International Advanced Subsidiary/Advanced Level UNIT 3:
Practical Skills in Biology I Question paper May 2024
Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel International Advanced Level
Wednesday 22 May 2024
Morning (Time: 1 hour 20 minutes) Paper
reference WBI13/01
Biology 🞍 🞍
International Advanced Subsidiary/Advanced Level
UNIT 3: Practical Skills in Biology I
You must have: Total Marks
Scientific calculator, ruler, HB pencil
Instructions
•• Use black ink or ball-point pen.
Fill in the boxes at the top of this page with your name,
centre number and candidate number.
•• Answer all questions.
Answer the questions in the spaces provided
– there may be more space than you need.
Information
•• The total mark for this paper is 50.
The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
Advice
• Read each question carefully before you start to answer it.
• Try to answer every question.
• Check your answers if you have time at the end.
Pearson Edexcel International Advanced Level International Advanced Subsidiary/Advanced Level UNIT 3:
Practical Skills in Biology I Question paper May 2024 Turn over
DO NOT WRITE IN THIS AREA
The meat from squid is quite tough and is often treated with enzymes to break down
the protein.
Some fruits contain enzymes that can break down protein.
Pineapples contain the enzyme bromelain and unripe papayas contain the
enzyme papain.
A study compared the effects of two different concentrations of these two enzymes
on the meat from squid.
DO NOT WRITE IN THIS AREA
2
🞍🞍🞍🞍
, The flowchart shows some of the steps in the method used in this study.
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Step 1
The parts of the squid that cannot be eaten were removed and the remaining
meat cut into equal sized pieces.
Step 2
Each piece of meat was placed into a beaker containing either a solution of
bromelain or a solution of papain or a control solution, each at pH 7.
Step 3
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The beakers were incubated to allow the enzymes to act on the meat.
Step 4
The pH and soluble protein content of each solution were measured.
DO NOT WRITE IN THIS AREA
3
🞍🞍🞍🞍 Turn over
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