A group of organs that work together to perform a major function

A disease caused by the presence of a living thing in the body that can pass from one organism to another.

Scientists who study diseases.

A person who has a disease and can spread it but is not showing symptoms.

Any living organism that transmits an infectious disease to humans.

Organisms that are too small to be seen with your eyes.

States that microbes can make you sick.

Cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent.

The process by which a cell makes a copy of the DNA in its nucleus before cell division.

A threadlike structure within a cell’s nucleus that contains DNA that is passed from one generation to the next.

The final stage of the cell cycle, in which the cell’s cytoplasm divides, distributing the organelles into each of the two new daughter cells