See Also â Sepsis Fact Sheets. Sepsis is the bodyâs overwhelming and life-threatening response to an infection which can lead to tissue damage, organ failure, and death.ee Also â Sepsis Fact Sheets. Sepsis is the bodyâs overwhelming and life-threatening response to an infection which can lead to tissue damage, organ failure, and death.
Active transport is the movement of molecules up their concentration gradient , using energy. The concentration of most molecules inside a cell is different than the concentration of molecules in the surrounding environment.
The simplest forms of transport across a membrane are passive. Passive transport does not require the cell to expend any energy and involves a substance diffusing down its concentration gradient across a membrane. A concentration gradient is a just a region of space over which the concentration of a substance changes, and substances will naturally move down their gradients, from an area of higher to an area of lower concentration.