What are three important organelle in cells?

Three important organelles in the cell are nucleus, mitochondria and rough endoplasmic reticulum.

Explanation:

Cellular organelles are structures that are mainly found in all eukaryotic cells and are linked to the fulfilment of their main functions.  In a cell all organelles are important and each one of them fulfills a specific function. Three of the main organelles of the cell are :

Prokaryotic cells, whose structure is simpler, lack nuclei and most organelles.

the abdomen (less formally called the belly, stomach, tummy or midriff) constitutes the part of the body between the thorax (chest) and pelvis, in humans and in other vertebrates. the region occupied by the abdomen is termed the abdominal cavity. the stomach secretes acid and enzymes that digest food. ridges of muscle tissue called rugae line the stomach. the stomach muscles contract periodically, churning food to enhance digestion. the pyloric sphincter is a muscular valve that opens to allow food to pass from the stomach to the small intestine.