Question

which of the following is a component of cell theory that is supported by the diagram
all cells have the same shape and function.
all cells are spontaneously generated.
cells are the basic units of life.
all living organisms are composed of cells.

Explanation:

1. Analyze option A: Cells have different shapes (e.g., amoeba, plant cells, paramecium) and functions, so this is incorrect.
2. Analyze option B: Cell theory states cells come from pre - existing cells, not spontaneous generation, so this is incorrect.
3. Analyze option C: The diagram shows different types of cells, but it doesn't directly show that cells are the basic units of life. The basic unit concept is more about the structural and functional unit, and the diagram doesn't emphasize this aspect as directly as option D.
4. Analyze option D: The diagram shows different living organisms (amoeba, plant, paramecium) all composed of cells, which supports the idea that all living organisms are composed of cells, a key component of cell theory.

Answer:

D. All living organisms are composed of cells.