The nucleus contains a cell’s deoxyribonucleic acid (DNA), its genetic material.
Besides mitochondria, many other organelles are found within animal cells which help them carry out the many functions required for life. It contains many different types of specialized organelles that carry out all of its functions.
Not every animal cell has all types of organelles, but in general, animal cells do contain most if not all of the following organelles.
The endoplasmic reticulum (ER) is a network of membranous sacs called cisternae that branches off from the outer nuclear membrane.
It modifies and transports proteins that are made by ribosomes.