Download Biology - Huddersfield New College

Pre-enrolment task for 2014 entry
Biology
Why do I need to complete a pre-enrolment task?
This task is so we can assess your skills before starting the course
When should I hand it in?
You should hand in the task at your first lesson in September.
How will I be given feedback on how well I have done?
You will receive feedback from your teacher at the end of the second teaching week.
Task In Detail
A level Biology Pre-Enrolment Task on Cell Structure
Looking at Cells
Cells are very small. Most are too small to be seen with the naked eye, and certainly not in any
detail. In order to investigate cells, we need to be able to produce images that are both
enlarged and more detailed. The first light microscope was developed by Robert Hooke in the
1660s, since then light microscopes have improved and electron microscopes have been
developed. This has allowed scientists to study cells in detail.
Organelles and Ultrastructure
When you look at a cell under the light microscope, the most obvious feature you will see is the
very large nucleus. You may also see other structures, such as chloroplasts and large vacuoles
in plant cells. These structures are organelles. Using an electron microscope, it is possible to
identify a range of organelles in plant and animal cells. The detail of the inside of cells, as
revealed by the electron microscope, is termed the cell’s ultrastructure (sometimes also called
the fine structure).
Huddersfield New College, New Hey Road, Huddersfield, HD3 4GL
Telephone: 01484 652341 email: [email protected]
www.huddnewcoll.ac.uk
OCR AS Biology Bridging course
Your pre-enrolment tasks
As preparation for the AS level Biology course, you need to write a report on the Ultrastructure
of plant and animal cells as seen by an electron microscope.
You need to include:
 A large labelled diagram showing the ultrastructure of a Eukaryotic cell
 Details about the following organelles:
o Nucleus, Endoplasmic Reticulum (Rough and Smooth),
o Golgi Apparatus (sometimes called Golgi Body), Mitochondria,
o Plasma (cell surface) Membrane, Cell Wall, Chloroplast,
o Large Permanent Vacuole and Centrioles.
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For each organelle we want you to include a labelled hand-drawn sketch in pencil, a
description of their structure and an outline of their function.
Finally, we would like you to outline how these organelles work together to produce and
then secrete a protein out of the cell.
Suggested sources: www.s-cool.co.uk ; www.youtube.com/watch?v=ostQCAeUJSQ
To be successful in AS level Biology it is essential that you have a firm foundation of Biological
knowledge for further study. Therefore you will be tested during the first week of the AS Biology
course on your knowledge covered in B1 and B2 at GCSE. You should use your class notes
and revision websites such as BBC Bitesize to prepare for this.