1. All the little things inside eukaryotic cells
Cell Organelles
All the little things inside
eukaryotic cells

2. CHLOROPLAST size = 4 – 10 µm function = site of photosynthesis
chloroplast’s structure >
CHLOROPLAST
size = 4 – 10 µm
function = site of photosynthesis
occurence = cytoplasm of some plant cells

3. Golgi Apparatus Size= Variable
Function= modification and synthesis of chemicals
Occurrence= free in cytoplasm
The name comes from Italian
anatomist Camillo Golgi

4. Nucleus Usually only one per cell
It is the site of nuclear material – the DNA
It is 10 micrometres
Largest most prominant organelle

5. Ribosomes Proteins are synthesised on ribosomes
Free to roam around in cytoplasm.
20 nm in diameter

6. Plasma membrane
Also know as cell surface membrane, is a double layer of phospholipids molecules arranged from tail to tail acting as a boundary between the cell and its environment.
It is a complex structure, stunned with protein, they embed in the membrane or form pores to allow specific molecules in and out of the cell
It is about 7 to 10 nm thick

7. Mitochondria Found in the cytoplasm; up to 1000 per cell.
They are 1-10 micrometers.
They are for aerobic respiration.

8. Centriole
Centrioles are structures inside animal cells which play a part in cell division.
Found only in animal cells, these paired organelles are typically located together near the nucleus in the centrosome.
The function of a centriole is to form spindle fibres to separate chromosomes during cell division.
Centrioles play a role in the mitosis of animal cells.
A centriole is 1 micrometer

9. Endoplasmic Reticulum
Rough endoplasmic reticulum bears the ribosomes during protein synthesis. The system then sends the proteins via small vesicles to the Golgi Complex , or, in the case of membrane proteins, it inserts them into the membrane
Smooth endoplasmic reticulum is found in a variety of cell types and it serves different functions in each. It consists of tubules and vesicles that branch forming a network. In some cells there are dilated areas like the sacs of rough endoplasmic reticulum. The network of smooth endoplasmic reticulum allows increased surface area for the action or storage of key enzymes and the products of these enzymes. In the case of smooth endoplasmic reticulum in muscle cells, the vesicles and tubules serve as a store of calcium which is released as one step in the contraction process. Calcium pumps serve to move the calcium.