Final answer:
The levels of organization that form the brain from least to most specialized are organism, organ, tissue, organelle, molecule.
Step-by-step explanation:
The correct answer is c. organism, organ, tissue, organelle, molecule.
Levels of organization in the human body start at the smallest unit, which is the atom, and progress to molecules, organelles, cells, tissues, organs, and organ systems. These levels build upon one another, with organs made up of different tissues and organ systems composed of multiple organs working together.
For example, the brain is an organ made up of different types of tissues, such as nervous tissue. Nervous tissue is composed of specialized cells called neurons, which are made up of organelles, such as mitochondria and the nucleus. Finally, molecules within the organelles, such as proteins, make up the building blocks of cells.
The levels of organization that form the brain from least to most specialized begin with atoms and progress through molecules, cells, tissues, and finally to organs.
Levels of Biological Organization
When considering the levels of organization that form the brain from least to most specialized, it is important to start with the smallest unit and build up to the more complex structures. The correct sequence is atoms → molecules → cells → tissues → organ.
At the most fundamental level, atoms combine to form molecules, which are groups of atoms held together by chemical bonds. These molecules can then interact to form various cellular structures and eventually entire cells. Cells are then organized into tissues, which are groups of similar cells carrying out specific functions. These tissues combine to form an organ, such as the brain, and multiple organs work together as part of a larger organ system.