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