Which level of organization does the complete skeleton of a mouse belong to
The complete skeleton of a mouse belongs to the level of organization known as organ system.
To arrive at this answer, we need to understand the levels of organization in biological systems. The hierarchy of biological organization starts from the simplest level, which is a cell, and progresses to ultimately form an entire organism. The levels include:
1. Chemical level: At this level, atoms and molecules interact and combine to form substances essential for biological activity.
2. Cellular level: Cells are the basic structural and functional units of life. They combine to form tissues.
3. Tissue level: Tissues are groups of cells that work together to perform specific functions. There are four main types of tissues: epithelial, connective, muscle, and nervous.
4. Organ level: Organs are formed by the combination of different tissues, working together to carry out specific functions. Examples include the heart, lungs, and liver.
5. Organ system level: Organ systems are formed by groups of organs that work in coordination to perform particular functions in the body. Examples include the respiratory system, cardiovascular system, and skeletal system.
6. Organism level: Organisms are complete individual living entities, such as animals, plants, or microorganisms.
In the case of a mouse's skeleton, it is a complete organ system that consists of bones, cartilage, and other connective tissues. The skeleton's primary function is to provide support, protection, and facilitate movement for the mouse. Therefore, the complete skeleton of a mouse belongs to the organ system level of organization.