A living thing that is made up of organ systems.
2 or more different kinds of tissues that work together.
The smallest unit of a living thing
2 or more organs that work together.
Groups of similar cells that work together.
An organism that is made up of many cells is called:
When cells have specific jobs to carry out and the work is divided, this is known as:
Which is the correct order for levels of organization from simple to complex?
Which type of cell forms overlapping layers to protect the body?
Which type of cell carries oxygen throughout the body?
Which type of cell contracts and relaxes?