Participants will find new words in this lessons. Some may be similar to words they already know and some will not be.

Cell is the basic unit of all living organisms, sometimes referred to as the "building brick of life". The word comes from the Latin, cellula, meaning "a small room".

Chemical is a substance with a defined structure that participates in reactions that can change its own properties or those of another chemical. The word comes from the Latin, chimicus, shortened from alchimicus, an ancient practice that attempted to change metals into gold.

Chromosome is a threadlike strand of DNA that transmits genetic information of a cell. The word comes from the Greek, chroma, meaning "color", because chromosomes can be stained with dyes, and soma, meaning "body".

Nucleus is a large, usually spherical structure containing the genetic information responsible for an organism’s characteristics. The word comes from the Latin, nucleus, meaning "kernel" or "core", denoting its central role in the cell.

Organelle is a structure in a cell, like a nucleus that performs a specific function. The word comes from the Greek word, organ, meaning "tool" and -elle which means "small".

You may notice other words with these same roots. By finding the root in a word, you may be able to figure out what it means, even if you have never seen the word.

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