The red blood cells were placed into an isotonic solution. Water moved into and out of the cells to maintain homeostasis.
Plasmids are small DNA fragments that occur in many bacterial cells.
Amino acid<span>, </span>any of a group of organic molecules that consist of a basic amino group (−NH2<span>), an acidic carboxyl group (−COOH), and an organic </span>R<span> group (or side chain) that is unique to each amino acid. </span>
