What is the type of cellular transport that moves substances against the concentration gradient?
Active transport moves substances against a concentration gradient.
A cell must often accumulate high concentrations of ions, glucose, or amino acids.
It usually has to use energy to move these substances across a membrane against their concentration gradients.
The process is called active transport.
It is aided by carrier proteins that act as pumps.
They use the energy from
The carrier proteins must have specific shapes that fit or bond well with their particular solutes.