Examlex
Currently,approximately _____ of high school graduates enroll in college.
Ingestion
The method by which food, liquids, or other substances are introduced into the body through swallowing or absorption.
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.
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