100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached 4.6 TrustPilot
logo-home
Exam (elaborations)

ACTUAL BIOLOGY B ADVANCED PAPER 3: General and Practical Principles in Biology MERGED QUESTION PAPER MARK SCHEME 100% GUARANTEE

Rating
-
Sold
-
Pages
128
Grade
A+
Uploaded on
19-01-2025
Written in
2024/2025

Pearson Edexcel Level 3 GCE BIOLOGY 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

Show more Read less
Institution
HOME OF LEGIT EDEXCEL 2024 BIOLOGY B ADVANCED
Course
HOME OF LEGIT EDEXCEL 2024 BIOLOGY B ADVANCED

Content preview

MERGED QUESTION PAPER> MARK SCHEME> 100% GUARANTEE




Candidate surname Other names


Centre Number Candidate Number




Paper


B ■ ■


Advanced
PAPER 3: General and Practical Principles in Biology

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 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


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

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


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

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



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



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


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

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



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



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


(iii) Pressing lightly on the coverslip
(1)

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



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



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




2

,MERGED QUESTION PAPER> MARK SCHEME> 100% GUARANTEE



■■■■

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

The total number of cells is 39.




Calculate the mitotic index for this root tip squash.
Use the formula

number of cells in mitosis
Mitotic index = × 100
total number of cells

Give your answer to one decimal place.
(2)




Answer ..............................................................



(Total for Question 1 = 6 marks)




■■■■

Written for

Institution
HOME OF LEGIT EDEXCEL 2024 BIOLOGY B ADVANCED
Course
HOME OF LEGIT EDEXCEL 2024 BIOLOGY B ADVANCED

Document information

Uploaded on
January 19, 2025
Number of pages
128
Written in
2024/2025
Type
Exam (elaborations)
Contains
Questions & answers

Subjects

$8.39
Get access to the full document:

100% satisfaction guarantee
Immediately available after payment
Both online and in PDF
No strings attached

Get to know the seller
Seller avatar
Abby002

Get to know the seller

Seller avatar
Abby002 Michigan Institute Of Aviation And Technology
View profile
Follow You need to be logged in order to follow users or courses
Sold
6
Member since
2 year
Number of followers
6
Documents
181
Last sold
2 year ago

0.0

0 reviews

5
0
4
0
3
0
2
0
1
0

Recently viewed by you

Why students choose Stuvia

Created by fellow students, verified by reviews

Quality you can trust: written by students who passed their tests and reviewed by others who've used these notes.

Didn't get what you expected? Choose another document

No worries! You can instantly pick a different document that better fits what you're looking for.

Pay as you like, start learning right away

No subscription, no commitments. Pay the way you're used to via credit card and download your PDF document instantly.

Student with book image

“Bought, downloaded, and aced it. It really can be that simple.”

Alisha Student

Frequently asked questions