The set of membrane folds in mitochondria that make ATP

The way cells are organised to form the skeleton of the body

The intricate network of stacks of the Golgi apparatus

The intricate network of protein filaments that give the cell a well defined structure

The intricate inner fold of the mitochondrion where O₂ is used to produce ATP

The intermediate filaments made of keratins, laminin and neurofilaments.

The rough and smooth endoplasmic reticulum and the peroxisomes

The endoplasmic reticulum, the peroxisomes and the mitochondria

The microtubulues made of tubulin

The microfilaments made of actin and associated proteins

can often move within the lateral plane of the membrane

can flip/flop across the membrane bilayer altering their inside/outside orientation

can only be removed by disruption of the membrane

have hydrophilic and hydrophobic parts

take the form of a helix as they pass through the membrane