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.

the atomic number of magnesium is 12. its nucleus must contain 12 protons and no electrons. the atomic number of an atom is determined by the number of protons.

magnesium is an electrolyte injection commonly used to treat low magnesium levels in your blood. it is also used to prevent or control seizures in women with preeclampsia or eclampsia.