In order to provide a cell with energy, these molecules have to pass across the cell membrane, which functions as a barrier — but not an impassable one. Like the exterior walls of a house ...

Lipids in cell membranes regulate the activity of a cancer-linked protein, cell biologists at RIKEN have discovered. This ...

Lysosomes are membrane-bound organelles in cells that act as recycling centers—breaking down waste materials, damaged organelles, and unwanted molecules using powerful digestive enzymes. Lysosomes ...

Cell structure Description Function Cell type Cell wall Freely permeable layer surrounding cell membrane. The cell wall of plant cells is made from cellulose. This gives them a rigid structure.

This barrier tissue performs its function thanks to specialized ... "These changes make the apical membrane—the top of the cell—less stiff and certain constituents of the tight junctions ...

Each component of a cell has its own function. Animal and plant cells differ and they have similarities. Nucleus, cell membrane, cytoplasm and mitochondria are four cell components that are found ...

Cell membrane proteins hide secret gateways that ... to uncover the mechanisms used by these proteins to regulate cell function. So far, researchers have confirmed that beyond the known access ...

The body's cells respond to stress -- toxins, mutations, starvation or other assaults -- by pausing normal functions to focus on conserving energy, repairing damaged components and boosting defenses.