The structure contains the chromosomes, and controls protein synthesis and transmission of hereditary information is a. Endoplasmic reticulum b) Centrioles c. Mitochondria d. Nucleus

The correct answer is d. Nucleus.<br /><br />The nucleus is the organelle in a cell that contains the chromosomes and controls protein synthesis and the transmission of hereditary information. It is the control center of the cell and plays a crucial role in storing and transmitting genetic information. The nucleus is surrounded by a double membrane called the nuclear envelope, which separates the contents of the nucleus from the cytoplasm of the cell.