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The model shown in the diagram describes how the tongue works. When a red block is placed into a the correctly shaped hole, the nearest bulb lights up. A lit bulb represents a signal being sent to the brain.******According to the model, how does the tongue function?

A) The tongue alerts the brain when food is absent.
B) The tongue changes the shapes of food molecules.
C) The tongue contains special cells for different types of food molecules.
D) The tongue receives information from the brain to determine how food tastes.

Which level of organization is the HIGHEST?
1 point
A) tissue
B) an organ
C) an organism
D) an organ system

Which represents the correct order of cell organization after cellular differentiation (simple to complex)?
1 point
A) organ system→organ→tissue→cell
B) cell→organ→organ system→tissue
C) tissue→cell→organ→organ system
D) cell→tissue→organ→organ system

Cells undergo differentiation during embyonic development. An individual skin cell develops differently from a muscle cell because
1 point
A) the cells have different DNA.
B) the cells have different genes.
C) the cells express different genes.
D) the cells have different chromosomes.

User Mmccabe
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1 Answer

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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.

User Michael Richards
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6.5k points