Download Biology - The Buckingham School

OCR Biology (Specification A) - AS Preparation work 2016
There are two parts to this work: Part A is a research task on Eukaryotic
Cells. Part B is on Maths for Biology skills
Part A: A Guide to Eukaryotic Cells
We would like to see how confident you are at carrying out research, and presenting
information in your own way. You must carry out research on each cellular component
listed below, and produce a short description in your own words about what its role within
a cell is. All work must be referenced within the text. Please see the referencing guide on
pages 2 and 3.
Some useful websites:
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Biology 4 Kids - Don’t be fooled by the title! This is a good resource for A-Level:
http://www.biology4kids.com/files/cell_main.html
Scool Biology:
http://www.s-cool.co.uk/a-level/biology/cells-and-organelles/revise-it/organelles
Biology Mad A-Level – Written for AQA, but still useful for many aspects of our
course:
http://www.biologymad.com/master.html?http://www.biologymad.com/SiteMap.ht
m
Task: A Guide to Eukaryotic Cells
1) Start with an introduction that outlines the similarities and differences between
prokaryotic and eukaryotic cells. Your comparison should refer to relevant diagrams.
2) Describe the functions of the following cellular components, and include a diagram
of each to show the organelle structure.
 Nucleus
 Nucleolus
 Nuclear envelope
 Rough endoplasmic reticulum
 Smooth endoplasmic reticulum
 Golgi apparatus
 Ribosomes
 Mitochondria
 Lysosomes
 Chloroplast
 Plasma membrane
 Centrioles
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Cell wall
Flagella
Cilia
3) Create a comparison table to show which features are in plant cells only, which are
in animal cells only, and which are common to both.
Referencing guide:
How can I include references within my text? – Use numbers to indicate which source you
used for each piece of information, and then list your sources in a reference section.
For example:
Eukaryotic cells can sometimes have a flagellum to assist with movement (1), but they all
contain a membrane bound nucleus (2).
References:
(1) Eukaryotes - Cells with parts, [Online], Available:
http://www.biology4kids.com/files/micro_eukaryote.html [accessed 24 August
2016].
(2) Introduction to cell, [Online], Available: http://www.s-cool.co.uk/alevel/biology/cells-and-organelles/revise-it/introduction-to-cells [accessed 24 August
2016].
What should I include in a reference?
For books, record:
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The author’s or editor’s name (or names)
The year the book was published
The title of the book
If it is an edition other than the first
The city the book was published in
The name of the publisher
Example:

Hall. A, et al, 2008, Salters-Nuffield Advanced Biology for Edexcel AS Biology, 2nd
Edition, Harlow, Pearson Education
For electronic resources, try to collect the information listed above if it is available, but also
record:

The date you accessed the source
2
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The electronic address or email
Example:
Young, C. (2001) English Heritage position statement on the Valletta Convention, [Online],
Available: http://www.archaeol.freeuk.com/EHPostionStatement.htm [Accessed 24 Aug
2001].
•
•
In the online example, sometimes the author’s details or the date of
publication/update might be missing.
When the author’s name is missing, use the name of the web page to list the
reference, as you would with any other anonymous source. If the date of publication
or update is missing, omit this information, but be sure to still include in square
brackets the date you accessed the information.
3
Part B: Maths for Biology
There are three sections to this piece of work. You have studied all of these skills needed to
complete these tasks in your Maths GCSE.
a) Conversion between units and standard form
b) Calculating magnification and image size
c) Calculating percentage change
Section a - Conversion between units and standard form:
1) Complete the diagram below to show: names of the units of measurement, unit
symbols and mathematical operations for converting between units.
2) Complete the table below to show the corresponding value in nanometres,
micrometres and millimetres for the measurements given in each row. The first row
has been completed for you.
Nanometre
5
1
Micrometre
0.005
Millimetre
0.000005
1
1
3
7
0.5
4
3) Complete the following tables on standard form
a)
Number
Number in standard form
1 x 106
1 x 105
1 x 104
Number
Number in standard form
8 x 10-3
7 x 10-2
5.5 x 10-1
1 000 000
100 000
10 000
1 000
100
10
1
0.1
0.01
0.001
b)
0.008
0.07
0.55
0.000052
0.048
0.0086
0.00086
0.000086
0.0000000001
0.000455
Section b - Calculating magnification:
1) Complete the following table:
Total magnification = eyepiece magnification x objective magnification
Eyepiece
Magnification
Objective
Magnification
X10
X4
X10
X10
X10
X40
X10
X100
Overall
Magnification
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Calculating Cell Magnification from images:
6
7
Section c – Calculating percentage change:
8
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