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ACTUAL pearson edexcel biology B ADVANCED PAPER 1: Advanced Biochemistry, Microbiology and Genetics

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pearson edexcel biology B advanced paper 1 :Advanced paper 1: Advanced Biochemistry, microbiology and genetics 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 90. – 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.

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Candidate surname Other names


Centre Number Candidate Number




Paper


B ■ ■


Advanced
PAPER 1: Advanced Biochemistry, Microbiology and
Genetics

Marks
Scientific calculator, HB pencil, ruler



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 90.
– 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


P78663A
©2024 Pearson Education Ltd.
F:1/1/1/1/1/1/

, Answer ALL questions.

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 Blood is pumped around the body in blood vessels to supply cells with nutrients
and oxygen.
(a) Which box in each row of the table shows where endothelial cells and valves
are found?
(2)

Type of blood vessel
Features of
blood vessels both capillaries capillaries neither capillaries
veins only
and veins only nor veins

Endothelial cells


Valves


(b) Nutrients and oxygen pass into cells from tissue fluid.
Explain how tissue fluid is formed.
(2)

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(Total for Question 1 = 4 marks)




2

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, 2 Glucose is a monosaccharide that is found in sucrose, amylose and amylopectin.

(a) Sucrose is made from glucose and one other molecule.
Which row of the table gives the name of this molecule and the type of reaction
that joins the two molecules together?

(1)

A fructose condensation
B fructose hydrolysis
C galactose condensation
D galactose hydrolysis


(b) Compare and contrast the structure of amylose and amylopectin.
(3)

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. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. .. ... .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. . .. .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. . ......................



. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. .. ... .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. . . ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. . ......................



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. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. .. ... .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. .. .. .. ... .. .. ... .. ... .. .. ... .. .. ... .. .. ... .. ... .. . . . ......................


(Total for Question 2 = 4 marks)




■■■■

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HOME OF LEGIT EDEXCEL 2024 BIOLOGY B ADVANCED
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