The movement of a substance across a biological membrane against its concentration or electrochemical gradient, with the help of energy input and specific transport proteins.

Movement of a substance across a cell membrane against an electrochemical gradient, in the direction opposite to normal diffusion and requiring the expenditure of energy.

The movement of molecules or ions across the cell membranes of epithelial cells by membrane carriers. An expenditure of cellular energy (ATP) is required. adduction

the motion of ions or compounds all over a cell membrane layer by a tool which demands energy. The motion might rely upon a particular kinship between the ions, a metabolous response, or another energ [..]

Transport of a substance against its prevailing diffusion gradient using energy from respiration.

The energy-dependent transport of a substance across a membrane.

the movement of a substance across a cell membrane with the input of energy (ATP)

The movement of molecules or ions across a membrane from a region of low concentration to a region of higher concentration (against a concentration gradient). This process requires energy, usually in [..]

[noun] The opposite of passive transport, active transport involves the input of energy (usually in the form of ATP), the building of concentration gradients, and the action of a membrane pump to create high concentrations of molecules. Appears in modules:

movement of molecules from where they are less crowded to where they are more crowded; the process of using energy to move materials through a membrane. adaptation -

Energy-requiring movement of an ion or small molecule across a membrane against its concentration gradient or electrochemical gradient. Energy is provided by the coupled hydrolysis of ATP or the cotra [..]

movement of substances across cell membranes that uses energy; often moves substances against a concentration gradient.

is walking, cycling or using public transport. Active transport is an alternative to car travel and can provide benefits such as increasing daily physical activity and reducing greenhouse gas emission [..]

The Movement of materials across Cell Membranes and epithelial layers against an electrochemical gradient, requiring the expenditure of metabolic energy.

Gated transport mechanisms by which Proteins or RNA are moved across the Nuclear Membrane.

Gated transport mechanisms by which proteins or RNA are moved across the NUCLEAR MEMBRANE.

Vectorial transport of a molecule or ion against a concentration gradient by a membrane-bound protein complex.

<biochemistry, chemistry> Transport of ions, nutrients or other molecules into a cell against a concentration gradient, this requires the expenditure of energy through ATP hydrolysis. (06 May 1997)

Movement of a molecule through a membrane against its concentration gradient, using a carrier protein and energy from ATP

The energy-requiring process by which molecules are carried across cell boundaries. Molecules are often concentrated inside cells as a result.