Cell membranes protect and organize cells. All cells have an outer plasma membrane that regulates not only what enters the cell, but also how much of any given substance comes in. Unlike ...

These include some obvious mechanical activities such as endocytosis, cell motility and membrane resealing, but also others, such as replication and transcription. Taking the motor proteins as an ...

Size Most are 5 μm - 100 μm. Most are 0.2 μm - 2.0 μm. Outer layers of cell Cell membrane, surrounded by cell wall in plants and fungi. Cell membrane, surrounded by cell wall. Cell contents ...

When bound to the receptor, toxins can act at the cell membrane by interfering with signal transduction pathways, pore formation or enzymatic activities on membrane compounds. Various enterotoxins ...