Examlex
What are the principal things about telephone surveys that make it difficult to draw a sample that is random, thereby undermining the validity of the research?
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.
Carrier Molecules
Molecules that help transport substances across a cell membrane or within the body, similar in function to carrier proteins but can include a broader range of molecules.
Binding Site
A specific region on a protein or enzyme where a particular molecule, such as a substrate, hormone, or drug, can form a stable complex, initiating a biological action.
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