Molecules can cross cell membranes from areas of low concentration to areas of high concentration by binding with carrier proteins and ATP. What is this process called?

d) center of the mid-ocean ridge

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sinserly,

steckh986

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products