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AdvancedPAPER 3: General and Practical Principles in Biology
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Pearson edexcel
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1/1/2025
Pearson Edexcel
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, surname names
Number Number
Morning (Time: 2 hours 30 minutes) Paper
B
� �
Advanced
PAPER 3: General and Practical Principles in Biology
Instructions
• Use black ink or ball-point pen.
centre number and candidate number.
Answer the questions in the spaces provided –
there may be more space than you need.
Information
• The total mark for this paper is 120.
– use this as a guide as to how much time to spend on each question.
In question(s) marked with an asterisk (*), marks will be awarded for your ability to structure
your answer logically showing how the points that you make are related or follow on from each
other where appropriate.
Advice
• Read each question carefully before you start to answer it.
• Check your answers if you have time at the end.
Turn over
, Answer ALL questions.
Write your answers in the spaces provided.
1 Saccharomyces cerevisiae (yeast) is a single-celled organism widely used in brewing and
baking.
The diagram shows a drawing of a yeast cell, as seen using an electron microscope.
A cytoplasm containing
cell surface glycogen granules
membrane
nucleus containing 16 linear
chromosomes
cell wall made of
chitin and mannose
vacuole
mitochondrion
B
(a) The actual size of the cell measured from point A to point B is 6 µm.
Calculate the magnification of this yeast cell.
Give your answer to the nearest whole number.
(2)
Answer ..............................................................
2
, ■■■■
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ertyuiopasdfghjklzxcvbnmqwer
AdvancedPAPER 3: General and Practical Principles in Biology
tyuiopasdfghjklzxcvbnmqwerty
Pearson edexcel
uiopasdfghjklzxcvbnmqwertyui
1/1/2025
Pearson Edexcel
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wertyuiopasdfghjklzxcvbnmqw
ertyuiopasdfghjklzxcvbnmrtyui
opasdfghjklzxcvbnmqwertyuiop
, surname names
Number Number
Morning (Time: 2 hours 30 minutes) Paper
B
� �
Advanced
PAPER 3: General and Practical Principles in Biology
Instructions
• Use black ink or ball-point pen.
centre number and candidate number.
Answer the questions in the spaces provided –
there may be more space than you need.
Information
• The total mark for this paper is 120.
– use this as a guide as to how much time to spend on each question.
In question(s) marked with an asterisk (*), marks will be awarded for your ability to structure
your answer logically showing how the points that you make are related or follow on from each
other where appropriate.
Advice
• Read each question carefully before you start to answer it.
• Check your answers if you have time at the end.
Turn over
, Answer ALL questions.
Write your answers in the spaces provided.
1 Saccharomyces cerevisiae (yeast) is a single-celled organism widely used in brewing and
baking.
The diagram shows a drawing of a yeast cell, as seen using an electron microscope.
A cytoplasm containing
cell surface glycogen granules
membrane
nucleus containing 16 linear
chromosomes
cell wall made of
chitin and mannose
vacuole
mitochondrion
B
(a) The actual size of the cell measured from point A to point B is 6 µm.
Calculate the magnification of this yeast cell.
Give your answer to the nearest whole number.
(2)
Answer ..............................................................
2
, ■■■■
