A synthetase is a type of enzyme that helps to make new molecules in a living thing.
Synthetases are very important for life and for making the things that living things need.
Examples:
The synthetase helps to make the things that keep us alive.
The synthetase in the plant makes the green stuff in the leaves.
We need the synthetase to make the things that keep us alive.
The synthetase is like a tiny chef making food for the cell.
Without the synthetase, the cell can't make the things it needs.
The synthetase is like a tiny factory making important things for the cell.