Examlex
Compare the significance of various processes in human variation and adaptation.
Carrier Molecules
Molecules that facilitate the transport of substances across a cell membrane, including ions, sugars, and small molecules, by undergoing a change in shape.
Active Transport
The movement of a substance across a cell membrane from an area of low concentration to an area of high concentration.
Passive Mechanisms
Processes that occur without the input of energy, such as osmosis or diffusion, often in biological contexts.
Nucleic Acids
Biological molecules essential for life, including DNA and RNA, that carry genetic information in cells.
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