Which level of organization is seen in both Arcobacteraceae and human stomach

The correct answer is a) cell.

Both Arcobacteraceae (a family of bacteria) and the human stomach are composed of cells. Arcobacteraceae are unicellular organisms, while the human stomach is made up of various types of cells, including epithelial, muscle, and nerve cells. Cells are the basic unit of life and are present in all living organisms, making this the appropriate level of organization common to both.

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