Final answer:
The tongue has special receptor cells that detect food chemicals and send signals to the brain, which is how we perceive taste. An organism is the highest level of biological organization, and the correct progression from simple to complex is cell, tissue, organ, and organ system after cellular differentiation. Cells differentiate by expressing different genes, leading to various cell types.
Step-by-step explanation:
Understanding the Function of the Tongue
According to the model, the tongue contains special cells for different types of food molecules. This is because the taste buds in the tongue contain specialized gustatory receptor cells that respond to chemical stimuli dissolved in the saliva. When these cells are activated by the chemicals, they send signals to the brain via cranial nerves, resulting in the perception of taste.
Levels of Biological Organization
The highest level of organization is an organism. This is the most complex level in the hierarchy of biological organization, which consists of a coordinated structure of one or more cells.
Cell Organization After Differentiation
After cellular differentiation, the correct order of cell organization from the simplest to the most complex is: cell, tissue, organ, and organ system. Cells differentiate and specialize to perform unique functions, then group into tissues, which in turn form organs; organs then work together to form organ systems.
Cellular Differentiation
During embryonic development, an individual skin cell develops differently from a muscle cell because the cells express different genes. While all cells share the same DNA and genes, the differential expression of these genes leads to the specialization of cells into different types, such as skin and muscle cells.