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Pearson Edexcel International Advanced Level Advanced Subsidiary UNIT 1: Molecules, Diet, Transport and Health Question Paper May 2024 $12.99   Add to cart
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Pearson Edexcel International Advanced Level Advanced Subsidiary UNIT 1: Molecules, Diet, Transport and Health Question Paper May 2024

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Pearson Edexcel International Advanced Level Advanced Subsidiary UNIT 1: Molecules, Diet, Transport and Health Question Paper May 2024

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  • September 2, 2024
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Please check the examination details below before entering your candidate information
Candidate surname Other names


Centre Number Candidate Number




Pearson Edexcel International Advanced Level
Tuesday 7 May 2024
Morning (Time: 1 hour 30 minutes) Paper
reference WBI11/01
Biology 🞍 🞍


Advanced Subsidiary
UNIT 1: Molecules, Diet, Transport and Health

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.
•• Calculators may be used.
You must show all your working out with your answer clearly identified at the
end of your solution.
Information

•• The total mark for this paper is 80.
The marks for each question are shown in brackets

• Instructure
– use this as a guide as to how much time to spend on each question.
questions marked with an asterisk (*), marks will be awarded for your ability to
your answer logically, showing how the points you make are related or
follow on from each other where appropriate.
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 Advanced Subsidiary UNIT 1: Molecules, Diet, Transport and
Health Question Paper May 2024 Turn over


P75771A
©2024 Pearson Education Ltd.
F:1/1/1/1/1/

, Answer ALL questions.
Write your answers in the spaces provided.




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Some questions must be answered with a cross in a box . If you change your mind about an
answer, put a line through the box and then mark your new answer with a cross .

1 Enzymes are biological catalysts.

(a) Enzyme molecules are formed from chains of amino acids joined together.

Which pair of elements is found in all amino acids?
(1)
A carbon and oxygen
B carbon and sulfur

C nitrogen and magnesium
D oxygen and magnesium

(b) Which row of the table describes how two amino acids are joined together in an




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enzyme molecule?
(1)

Name of bond Reaction that forms the bond
A ester condensation

B ester hydrolysis

C peptide condensation

D peptide hydrolysis




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, (c) Describe how a chain of amino acids can form an enzyme molecule.
(3)
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(Total for Question 1 = 5 marks)
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