churn in American English. churnverb [ I/T ] [ I ] The water was churning and the boat was rocking. [ M ] The fish churned up the water when we threw them some food. [ T ] fig. Seeing the car ahead flip over churned his stomach.
The nucleus controls everything that happens in the cell. This means that it controls the chemical reactions that take place in both and animal and plant cells. Some organelles in the cell have their own job like mitochondria control the respiratory (for example).
The cell structure which controls the activities of the cell is the nucleus. The nucleus contains the genes which give the cell instructions. Other cell parts, such as mitocho â¦ ndria, have other functions. Mitochondria, for example, are where energy is released from food by the process of respiration.