Function of Cell Organelles
Function of Cell Organelles



Each cell organelle has a different function
All organelles within a cell work together to
ensure that the cell functions properly
A cell can be thought of a factory as it
produces chemicals and proteins needed by
the body
Cell membrane
http://library.thinkquest.org/C004535/media/cell_membrane.gif
Cell membrane


The cell membrane is a ‘selective barrier’
which allows certain substances to pass
through and prevents others from entering
the cell
Found in both plant and animal cells
Nucleus
http://universe-review.ca/R10-01-cellnucleus.htm
Nucleus


The nucleus contains the genetic material of
the cell called DNA (deoxyribonucleic acid).
DNA is essential for the cell to function as it
contains all the instructions for the cell.
Nucleolus is found within the nucleus and
contains RNA (ribonucleic acid). It is
responsible for the production of ribosomes.
Endoplasmic Reticulum
Endoplasmic Reticulum (ER)



A network of flattened membranes used
mainly for the transport of proteins
Rough – ribosomes attached to the surface
giving a ‘rough’ appearance. It folds and
processes proteins
Smooth – No ribosomes present and
synthesises lipids for membranes
Ribosomes
http://www.sciencegeek.net/Biology/review/graphics/Unit5/Protein.jpg
Ribosomes


Responsible for protein synthesis necessary
for the cell to function
Can be found free in the cytoplasm or
attached to the rough ER
Golgi Bodies
Golgi Bodies


A network of membranes that are curved and
stacked in groups of 4-10
The function is to process, package and sort
cell products. Vesicles can be seen budding
off as proteins continue on to their final
destination which can be located inside or
outside the cell
Lysosomes
http://www.cartage.org.lb/en/themes/sciences/zoology/AnimalPhysiology/Anatomy/AnimalCellStructure/Lysosomes/Lysosomes.htm
Lysosome


Sacs filled with digestive enzymes
They break down worn out cell organelles so
that the materials can be recycled to make
new organelles
Mitochondria
http://www.chelationtherapyonline.com/anatomy/images/mitochondria.jpg
Mitochondria


The ‘powerhouses’ of the cell
Responsible for producing ATP, an energy
molecule, so cell processes can be carried
out
Chloroplast
http://www.dnr.sc.gov/ael/personals/pjpb/lecture/chloroplast.jpg
Chloroplast


Organelles found only in plant cells that
contain the green pigment chlorophyll
They carry out the process of photosynthesis.
This process requires carbon dioxide, water
and sunlight to produce energy (mainly sugars)
for the cell