Transcript Cell Specialisation - Shannon Castle 10Ex

Cell Specialisation
Shannon Castle 10E
Introduction to Specialisation
Cell specialisation:
Cells adapting to their conditions and function
over time, becoming more suited to the
organism it belongs to.
This is important as it helps the organism
function more efficiently.
Examples of specialisation in:
ANIMAL CELLS
Blood – Red Blood Cell (Erythrocyte)
Main function –
carrying oxygen to
tissues and recovery
of carbon dioxide.
Main features:
• Haemoglobin.
• No nucleus in
mammals at maturity.
• Bi-concave shape
• Small size
Figure 1
Blood – White Blood Cell
Main function – defence of the organism against
viruses etc.
Each type of white cell is responsible for different
types of defence function, which is why they
either have specialised granules, or none at all.
Figure 2
Neurons
Figure 3
Figure 5
One of the many
cells found in
the respiratory
system, as well
as other body
systems.
There are 5 types of simple epithelium
which are 1 cell thick:
The cells start with these simple shapes:
Squamous (pavement) epithelium:
Figure 6
Simple cuboidal epithelium:
Simple Columnar Epithelium:
Figure 8
Figure 7
These cells are further specialised to include
glands and cilia:
Figure 9
Glandular Epithelium:
Ciliated columnar Epithelium:
Figure 10
These cells come together to form multiple
layers, becoming:
Stratified (compound) Epithelium:
Figure 11
Examples of specialisation in:
PLANT CELLS
Leaf Cells
Figure 12
Figure 13
Cells in a Plant Stem
Figure 14
Woody Vs. Herbaceous Plant Stems
Figure 15
Bibliography
See:
http://cellfunctioning2012.wikispaces.com/Bibliography