Question

Nucleus definition 

Answer 1

Step-by-step explanation:

Hey there!

Nucleus can be defined as the central part of the cell which controls activities whole cell.

It is bounded by nuclear membrane. It is composed of proteinious substances.

Hope it helps..

Answer 2

Hello!!! Princess Sakura here ^^

Step-by-step explanation:

A nucleus is a membrane-bound organelle that contains the cell's chromosomes.