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Pearson Edexcel Level 3 GCE Advanced PAPER 3: General and Practical Principles in Biology QP JUNE 2024 $12.99   Add to cart

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Pearson Edexcel Level 3 GCE Advanced PAPER 3: General and Practical Principles in Biology QP JUNE 2024

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Pearson Edexcel Level 3 GCE Advanced PAPER 3: General and Practical Principles in Biology QP JUNE 2024

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  • September 7, 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 Level 3 GCE
Wednesday 19 June 2024
Morning (Time: 2 hours 30 minutes) Paper
reference 9BI0/03
Biology B 🞍 🞍


Advanced
PAPER 3: General and Practical Principles in Biology

You must have: Total Marks
Scientific calculator, HB pencil, ruler


Pearson Edexcel Level 3 GCE Advanced PAPER 3: General and Practical Principles in Biology QP JUNE 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.

Information

•• The total mark for this paper is 120.
The marks for each question are shown in brackets
– use this as a guide as to how much time to spend on each question.
• Instructure
question(s) marked with an asterisk (*), marks will be awarded for your ability to
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 answer
Try to every question.
• your answers if you have time at the end.
Turn over


P78665A
©2024 Pearson Education Ltd.
F:1/1/1/1/1/1/

, Answer ALL questions.

1 A student made a root tip squash to observe the stages of mitosis.




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(a) Name the region of the root tip where cells are actively dividing.
(1)

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(b) Give one reason for each of the following:
(i) Treating the root tip with strong acid
(1)

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(ii) Adding a stain to the root tip
(1)




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(iii) Pressing lightly on the coverslip
(1)

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, (c) The diagram shows cells from a root tip squash.

The total number of cells is 39.
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Calculate the mitotic index for this root tip squash.
Use the formula
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number of cells in mitosis
Mitotic index = × 100
total number of cells

Give your answer to one decimal place.
(2)
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Answer ..............................................................


(Total for Question 1 = 6 marks)




3
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, 2 The mammalian kidney contains over one million nephrons.

One of their functions is to produce urine with a high concentration of urea.




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(a) The diagram shows one nephron, collecting duct and some of the associated
blood vessels.




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A




(i) Explain how urea enters the nephron.
(2)

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