which macromolecules have a basic unit that is composed of phosphate a sugar ring and one of five different bases

Non metal is an element or substance that is not a metal metal is a solid material that is typically hard, shiny, malleable, fusible, and ductile, with good electrical and thermal conductivitymetalloid is an element (e.g., germanium or silicon) whose properties are intermediate between those of metals and solid nonmetals. they are electrical semiconductors.

Contained in chromosomes which are located in the nucleus of the cell.

1) according to the law of conservation of mass ,in all chemical reactions total mass is unchanged