What is the difference between prokaryotes and eukaryote cells?

Eukaryote cells contain membrane bound organelles while prokaryotes do not. There is a different structure in Prokaryotic and Eukaryotic cells including mitochondria, cell wall, and chloroplasts in eukaryotic cells but not prokaryotic cells. Prokaryotic cells don't have a nucleus to hold their DNA while Eukaryotic cells do have a nucleus to hold their DNA. Those are just a few differences.

the tricuspid valve is present between right atrium and right ventricle

a scenario where a cell may be needed to perform a form of endocytosis is when transporting large molecules. a scenario where a cell may be needed to perform a form of exocytosis is when releasing the large molecule from the cell.