surname names
Number Number
Morning (Time: 1 hour 45 minutes) Paper
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Advanced
PAPER 2: Advanced Physiology, Evolution and Ecology
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
P78664A
©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 The photograph shows part of a root tip cell, as seen with an electron microscope.
P
Q
X Y
S
R
(Source: © BIOPHOTO ASSOCIATES / SCIENCE PHOTO LIBRARY)
(a) (i) Which of the following structures is surrounded by a tonoplast?
(1)
A P
B Q
C R
D S
(ii) In which of the following structures does the process of translation occur?
(1)
A P
B Q
C R
D S
2
, MERGED QUESTION PAPER> MARK SCHEME> 100% GUARANTEE
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, (iii) How many of the labelled structures in this cell will be present in a cell of an
organism in the domain Archaea?
(1)
A 0
B 1
C 2
D 3
(b) The width of structure P, measured between X and Y, is 36 μm.
Calculate the magnification of this photograph.
Give your answer in standard form.
(2)
Answer ..............................................................
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