Made mainly of lipids and proteins.
Regulates the movement of substances into and out of the cell.
It also has receptor molecules on it, which allow it to respond to chemicals like hormones.
Made of the carbohydrate cellulose.
Supports plant cells.
Surrounded by a nuclear envelope which contains many pores.
Contains chromatin and nucleolus.
Chromatin is made from proteins and DNA.
The pores allow substances e.g. RNA to move between the nucleus and the cytoplasm.
The nucleolus makes ribosomes.
Surrounded by membrane with no clear internal structure.
Contains digestive enzymes.
Kept seperate from the cytoplasm by the surrounding membrane and can be used to digest invading cells or to break down worn out components.
Very small, floats free in the cytoplasm or is attached to the RER.
Site where proteins are made.
Rough Endoplasmic Reticulum (RER)
A system of membranes enclosing a fluid-filled space.
Surface covered in ribosomes.
Folds and processes proteins made from the ribosomes.
Smooth Endoplasmic Reticulum (SER)
Similar to RER but with no ribosomes.
Synthesises and processes lipids.
Small fluid-filled sac in the cytoplasm, surrounded by a membrane.
Transports substances in and out of cell aswell as between organelles.
Some are formed by the Golgi Apparatus or the endoplasmic reticulum, while others are fromed at the cell surface.
Fluid-filled flattened sacs.
Processes and packages new lipids and proteins. Also makes lysosomes.
Has a double membrane.
Inner one is folded to form cristae.
The matrix contains enzymes for respiration
Site of aerobic respiration where ATP is produced.
Found in large numbers in active cells which require a lot of energy.
A small, flattened structure found in plant cells.
Double membrane, has membranes inside called thylakoid membranes.
These are stacked up to form grana.
Grana are linked by lamellae.
Site where photosynthesis takes place.
Small, hollow cylinders, containing a ring of microtubules (tiny protein cylinders)
Involved with seperation of chromosomes during cell division
Small, hair-like structures found on surface membrane of some animal cells.
In a cross-section they have an outer membrane and a ring of nine pairs of protein microtubules inside, with a single pair in the middle
The microtubules allow cilia to move.
This moves substances along the cell surface.
On eukaryotic cells they are like cilia but longer.
They stick out from the cell surface and are surrounded by plasma membrane.
Microtubules contract to make flagellum move.
Used to propel cells forward e.g. sperm.