I can give you several sentences.
The nucleus is the central point.
A cell nucleus is of interest to many scientists.
The nucleus is a structure present in most cells, containing the genetic material.
The nucleus is somewhere in the cytoplasm of the cell.
Prokaryotic organisms have cells that lack a nucleus.
Prokaryotic organisms have cells that lack a nucleus.
Eukaryotic cells have no organelles or a nucleus
Mitosis is the process in which the material from the cell nucleus divides.
you can use the word good sport in a sentence when you are saying that game was good today you were a very good sport. That is a very good sentence to use for good sport.
The nucleus in a sentence is typically the main idea or the subject that the rest of the sentence revolves around. It is usually the most important element in the sentence and provides the primary focus or message.
Our class studied the nucleus today, and it was so much fun!!
"The electron cloud is the space in the atom where the electrons orbit the nucleus."