To assist in the production of ATP

To help digest waste products and cell debris

To give the cell structure and aid in movement of substances

To increase the viscosity of the cell membrane

To modify proteins and lipids in preparation for release

A rigid structure but with pores and channels allowing substances to move across easily

A dynamic structure in which there is a lot of lateral movement of the phospholipids of the bilayer as well as, more rarely, flip-flop motion

A generally rigid structure but one in which at least the phospholipids can routinely undergo flip-flop but not lateral motion

A generally rigid structure but one in which at least the integral proteins can routinely undergo flip-flop but not lateral motion

A rigid structure that gives the cell identity from its environment

By the Golgi apparatus

By the mitochondria

By the peroxisomes and lysosomes

By the peroxisomes and the secretory vesicles

By perioxisomes and acid hydrolases

Peroxisomes, lysosomes and mitochondria

Peroxisomes, lysosomes and microtubules

Microfilaments, intermediate filaments and thick filaments

Microfilaments, intermediate filaments and microtubules

The nucleus, the Golgi apparatus and the mitochondria

Are proteins integral to the cell membrane

Are not inserted into the cell membrane, but are associated with membrane itself or another membrane protein

Are membrane-associated peripheral proteins that are tightly inserted into the cell membrane

Are integral outer or inner membrane proteins that extend part way through the cell membrane

The main cations are potassium and proteins and the main anions are sodium and chloride

The main cation is sodium and the main anion is proteins

The main cations are sodium, potassium and calcium and the main anions are proteins, chloride and magnesium

The main cations are potassium and magnesium and the main anion is proteins

The main cations are potassium and calcium and the main anions are proteins and chloride