Ion channels and cellular transport structures belong to this classification of

Transporters

Explanation:

All proteins interacting with the cell membrane are called membrane proteins. A subclass of such proteins are the transporters which are involved in the transport of different kind of substances inside or outside the cell. This substances can be ions or macromolecules depending on the portein structure.

the "dirty dozen" chemicals banned in an international treaty are formally known as persistent organic pollutants, or pops. the united nations environment program provided this background on what they are and what they can do to humans and wildlife.

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examples of nucleic acids are deoxyribonucleic acid (dna) and ribonucleic acid (rna).