The cellular and molecular control of programmed cell death is known as apoptosis.
Apoptosis is a highly regulated process of programmed cell death that occurs in multicellular organisms. It plays a crucial role in various physiological processes such as tissue development, maintenance of tissue homeostasis, and elimination of damaged or unnecessary cells. Apoptosis is characterized by specific cellular changes, including cell shrinkage, chromatin condensation, DNA fragmentation, and the formation of apoptotic bodies. It is tightly controlled by a complex network of signaling pathways and involves the activation of specific genes and proteins.
Ageing, degeneration, and necrosis are different concepts related to cellular and tissue processes, but they do not specifically refer to the cellular and molecular control of programmed cell death. Ageing refers to the natural process of growing older and the gradual decline in cellular and organismal functions over time. Degeneration refers to the progressive deterioration or impairment of cells, tissues, or organs. Necrosis, on the other hand, is a form of cell death that occurs due to injury, trauma, or disease and is characterized by uncontrolled cell death and inflammation.
Therefore, the correct answer to the given question is:
Apoptosis.