Question

The first, or smallest, level of organization in the human body is the . The of organization is defined as a group of cells working together to perform a similar function. The highest, or most complex, level of organization in the human body is also known as .

Answer 1

Cells are the smallest level of organization. The highest level of organization is the organ system.
Cells ➡️ tissues ➡️ organs ➡️ organ system