Referring to molecules in which alternating single and double bonds are present, or to molecules that are connected through a conjugation system.

A molecule that contains a series of alternating single and double bonds between carbon atoms, commonly found in some pigments and organic compounds.

A protein that is covalently bonded to a non-protein group, such as a carbohydrate or lipid, which is essential for its function.

A process in which genetic material is transferred between bacteria through direct contact, often involving the transfer of plasmids.

A structure in bacteria that facilitates the transfer of genetic material between cells during conjugation.

The thin, transparent membrane that covers the white part of the eyeball and lines the inside of the eyelids.

A type of tissue that supports, binds, and connects other tissues and organs, typically consisting of cells embedded in an extracellular matrix.

A small, tooth-like fossil structure from extinct jawless vertebrates, often used for stratigraphic dating.

Toxins produced by cone snails, which are small proteins that target ion channels and are being studied for their potential use in medicine.

Related by blood, typically used in reference to individuals who share a common ancestor.