Best Answer: The definitions will tell you the differences. The nucleus, in a eukaryotic cell, contains the DNA for cell function and, therefore, is the control center of the cell (It is NOT a brain).It also contains the nucleolus which is the site where ribosomes are manufactured.he nucleus, in a eukaryotic cell, contains the DNA for cell function and, therefore, is the control center of the cell (It is NOT a brain). It also contains the nucleolus which is the site where ribosomes are manufactured.
The heart contains four chambers. The two upper chambers are the atria and the two lower chambers are the ventricles. On the cranial surface of each atrium is a pouch-like appendage called an auricle which is thought to increase the capacity of the atrium slightly.
Apr 13, 2016. The Ventricles are the pumping chambers of the heart. Heart consists of four chambers two (left /right) Ventricles & two Atria (left/right). The ventricles have thick muscular Walls while atria have Thin walls. Blood from rest of the body is received by Atria & flowed to Ventricles as ventricles relax after contraction. Ventricles Pump the blood to the Body.