Pearson Edexcel International Advanced Level Biology Advanced Subsidiary UNIT 1:
Molecules, Diet, Transport and Health QP JANUARY 2024
[Author name] [Date] [Course title]
, Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel International Advanced Level
Monday 8 January 2024
reference WBI11/01
Afternoon (Time: 1 hour 30 minutes) Paper
Biology
Advanced Subsidiary
UNIT 1: Molecules, Diet, Transport and Health
You must have: Total Marks
Scientific calculator, ruler, HB pencil
Pearson Edexcel International Advanced Level Biology Advanced Subsidiary UNIT 1: Molecules,
Diet, Transport and Health QP JANUARY 2024
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
• – use this as a guide as to how much time to spend on each question.
• The marks available for spelling, punctuation and grammar are clearly indicated. In
questions marked with an asterisk (*), marks will be awarded for your ability to
structure 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. Turn over
P75589A
©2024 Pearson Education Ltd.
*P75589A0128*
,S:1/1/1/
, Answer ALL questions.
Write your answers in the spaces provided.
DO NOT WRITE IN THIS AREA
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 Red blood cells transport oxygen to the cells of the body.
Read through the following description of how oxygen is transported from the
lungs to respiring cells.
Complete the description by writing the most appropriate word or words on
the dotted lines.
Oxygen binds to . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . inside red blood cells.
Oxygen binds to this molecule in the lungs where the partial pressure of
oxygen is . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . compared with elsewhere in the body.
The oxygenated blood returns to the heart in the blood vessel called the
DO NOT WRITE IN THIS AREA
....................................................................................................................... and is pumped to the body by the part
of the heart called the ....................................................................................................................... .
In the tissues, the ability of this molecule to bind oxygen is affected by
the higher concentration of carbon dioxide.
This is called the .............................................................. effect.
(Total for Question 1 = 5 marks)
DO NOT WRITE IN THIS AREA
2
*P75589A0228*
Molecules, Diet, Transport and Health QP JANUARY 2024
[Author name] [Date] [Course title]
, Please check the examination details below before entering your candidate information
Candidate surname Other names
Centre Number Candidate Number
Pearson Edexcel International Advanced Level
Monday 8 January 2024
reference WBI11/01
Afternoon (Time: 1 hour 30 minutes) Paper
Biology
Advanced Subsidiary
UNIT 1: Molecules, Diet, Transport and Health
You must have: Total Marks
Scientific calculator, ruler, HB pencil
Pearson Edexcel International Advanced Level Biology Advanced Subsidiary UNIT 1: Molecules,
Diet, Transport and Health QP JANUARY 2024
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
• – use this as a guide as to how much time to spend on each question.
• The marks available for spelling, punctuation and grammar are clearly indicated. In
questions marked with an asterisk (*), marks will be awarded for your ability to
structure 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. Turn over
P75589A
©2024 Pearson Education Ltd.
*P75589A0128*
,S:1/1/1/
, Answer ALL questions.
Write your answers in the spaces provided.
DO NOT WRITE IN THIS AREA
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 Red blood cells transport oxygen to the cells of the body.
Read through the following description of how oxygen is transported from the
lungs to respiring cells.
Complete the description by writing the most appropriate word or words on
the dotted lines.
Oxygen binds to . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . inside red blood cells.
Oxygen binds to this molecule in the lungs where the partial pressure of
oxygen is . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . compared with elsewhere in the body.
The oxygenated blood returns to the heart in the blood vessel called the
DO NOT WRITE IN THIS AREA
....................................................................................................................... and is pumped to the body by the part
of the heart called the ....................................................................................................................... .
In the tissues, the ability of this molecule to bind oxygen is affected by
the higher concentration of carbon dioxide.
This is called the .............................................................. effect.
(Total for Question 1 = 5 marks)
DO NOT WRITE IN THIS AREA
2
*P75589A0228*
