Polarity At Biology Glossary

What is it? Meaning directionality and referring either to an effect seen in only one direction from a point of origin or to the fact that linear entities (such as a single strand of DNA or RNA or a protein) have ends (5 and 3; N and C) that differ from each other.

Bio Definition Added By: Julian

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Bio Term variable region is A region in an immunoglobin molecule that shows many sequence differences between antibodies of different specificities; the part of the antibody that binds to the antigen. See immunoglobulin gene.

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Bio Term C-terminus is The end of a polypeptide chain that has a free carboxylic acid (-COOH) group.