Examlex
Which one of the following has a low density?
D-Threonine
One enantiomer of the amino acid threonine, characterized by its specific spatial arrangement of atoms, which is important in biochemistry and molecular biology.
Enantiomer
Molecules that are mirror images of each other but cannot be superimposed onto each other, usually involving chiral centers.
Molecule
The tiniest unit of a chemical substance that maintains both the substance's composition and its chemical characteristics, and can exist on its own.
Enantiomers
Molecules that are mirror images of each other but cannot be superimposed, much like left and right hands.
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