5. Organic molecules provide the body with materials to form , tissue, and ; regulatory substances to direct and govern the interactions of ; and to fuel the chemical operations of cells.

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The question is incomplete. complete question is attached belowanswer: correct answer is option b  i.e.  solid particles  reason: filter paper has small pores, through which smaller particles can pass through. however, solid particles  have relatively larger size. hence, they are least likely to pass through.