A scientists is observing a eukaryotic cell and a prokaryotic cell Which structure could she only observe in the eukaryotic cell?

Nucleus and membrane-delimited organelles

Explanation:

The prokaryotic cell includes bacteria and Archaea cells and generally lack nuclei and membrane-bound organelles like mitochondrion, vacuole, and chloroplast (found in plant cells). Their genetic materials lie freely within the cytoplasm without any structure delimiting them.

The eukaryotic cell, on the other hand, includes plant, animal, fungi, and protists cells. They have nuclei and other membrane-bound organelles such as the mitochondrion, vacuole, and chloroplast.

Hence, a scientist observing a eukaryotic cell and a prokaryotic cell would find that cell organelles like the nucleus and other membrane-delimited structures are only present in the eukaryotic cell.

when atoms of different types of elements join together, they make molecules called compounds. water consists of compound molecules made up of 2 hydrogen atoms and 1 oxygen atom. this is why it's called h2o. water will always have 2 times the number of hydrogen atoms as oxygen atoms.

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