A molecule that is present only when a disease is present is called a
A) node.
B) SNP.
C) biomarker.
D) activator.
E) LINE.

Question

Quizplus · Accepted Answer

A biomarker is a measurable indicator of a biological process or condition. In the context of disease, a biomarker might be a molecule that is only present when a disease is present, and can therefore be used for diagnosis or monitoring of the disease. Nodes are points of intersection in a network or graph, SNPs (single nucleotide polymorphisms) are genetic variations that are associated with disease risk, activators are molecules that increase the activity of enzymes or other proteins, and LINEs (long interspersed nuclear elements) are repetitive DNA sequences.

A Molecule That Is Present Only When a Disease Is