Answer:
Cell - the basic unit of life for all organisms
Tissue - a group of cells that are similar in structure and function
Organ - a group of tissues that work together to perform specific activities for an organism
Organ system - a group of organs that work together to perform specific activities for an organism
Organism - a living thing that carries out the processes of life
Step-by-step explanation:
You haven't provided the list of levels of an organism's organization. This is the list:
- Cell
- Tissue
- Organ
- Organ system
- Organism
The cell is the smallest, basic unit of life of all organisms.
A large number of cells that are close to each other and work together make up a tissue (e.g. blood, muscles, nervous tissue). These cells don't have to be identical. For example, blood is a tissue that consists of a variety of cells. Every type of these cells has its own unique function.
Multiple types of tissue that work together and have a specific role make up an organ (e.g. liver, heart, lungs).
Organ systems are groups of organs that work together to perform a certain function in an organism's body (e.g. respiratory system, cardiovascular system, nervous system).
An organism is made up of multiple organ systems. It can be defined as a living thing that carries out processes of life.