While viewing a water sample under a microscope, you observe a single cell. Which of the following observations could you use to
determine if the cell is prokaryotic or eukaryotic?
A.
The cell contains genetic material.
B. The cell contains cytoplasm.
C. A flagellum is present.
D.
The contents are surrounded by a cell wall.
E.
The cell's DNA is encapsulated in a nucleus.
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E.  The cell's DNA is encapsulated in a nucleus.

Explanation:

There are no membrane bound organelles present in a prokaryotic cell. Nucleus is a membrane bound organelle so it is absent in a Prokaryotic cell so it is an evidence that cell is Eukaryotic cell.

While other features mentioned in the question are common both in prokaryotic and eukaryotic cell.

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.