Examlex
To divide the document into multiple sections, you insert a(n) ____________________.
Receptor Proteins
Proteins located on cell surfaces or within cells that bind specific molecules, triggering various cellular responses.
Hormones
Chemical messengers produced by glands in the endocrine system, affecting various processes in the body like growth and metabolism.
Enzymes
Biological molecules that significantly speed up the rate of virtually all of the chemical reactions that take place within cells.
Plasmodesmata
Channels in plant cell walls that enable communication and transport between cells.
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