Transport of molecules within a cell and out of the cell requires a complex endomembrane system. Endocytosis occurs when the cell membrane engulfs particles (dark blue) outside the cell ...

A plasma membrane is permeable to specific molecules that a cell needs. Transport proteins in the cell membrane allow for selective passage of specific molecules from the external environment.

This takes place when molecules diffuse across the cell membrane by travelling through specific transport proteins. It occurs down a concentration gradient - molecules move from an area of high to ...

It is essential for bioenergetics (ATP, GTP), metabolic regulation through glycolysis and oxidative phosphorylation, intercellular signaling pathways, cell proliferation (as part of DNA and RNA ...

The net movement of water from a region of high water concentration to a region of low water concentration through a selectively permeable membrane. This means osmosis is a special case of ...

Similar to a small cut that heals itself after a short time, individual cells in our body suffer "wounds" in their protective ...

Scientists have revealed the secret to the structural integrity of tiny particles that transport cargo from cell to cell through ... through the protective outer membrane, a necessary step to ...

The global hydrogen fuel cell train market is set for explosive growth, with projections indicating a surge to $3.45 billion ...