The basic building block of all living things.


Structure constituted of DNA that contains a person’s genetic code.


Genetic information that contains instructions that make each species unique, such as instructions for making proteins and enzymes. This genetic code is transmitted from one generation to another.


A type of protein that speeds up the rate of a specific chemical reaction that takes place within a cell.


A specialized structure within a cell that contains digestive enzymes.

Lysosome storage disorder (LSD)

A group of disorders resulting from the build-up of waste products in lysosomes as a result of an enzyme problem.


A change, or error, in the DNA sequence.
This change can be passed on from generation to generation.

X-linked disorder

An inherited disorder that is caused by a mutation on a gene on the X chromosome.