Please help! chemistry

Two things that biomedical has invented or innovated

If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?

Which are examples of how technology has advanced scientific understanding.1using hot water to sterilize medical equipment.2transplanting a human organ into another individual.3inserting genes from one sheep into another cell to make a cloneunderstanding the different structures that make up a cell.4examining microorganisms from the deepest parts of the ocean