In the context of eukaryotic and prokaryotic cells, consider the following statements:

1. Eukaryotic cells possess an organised nucleus with a nuclear envelope while the prokaryotic cells have no well-defined nucleus.

2. Eukaryotic cells are generally smaller and multiply more rapidly than prokaryotic cells.

3. Bacteria and blue-green algae are examples of eukaryotic cells.

Which of the statements given above is/are correct?