Examlex
What is the value of Actions on Decisions to a tax researcher?
Active Transport
A cellular process that requires energy to move substances across cell membranes against a concentration gradient.
Concentration Gradient
The gradual difference in the concentration of solutes in a solution between two regions. In biology, it often refers to differences across a membrane.
Carrier
A molecule or protein that transports substances across a cell membrane, or a person or animal that transmits a disease-causing agent without showing symptoms.
Mediated Transport
The process of moving molecules across a cellular membrane through the use of specific protein channels or carriers.
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