AP PSYCHOLOGY

Detailed explanation-1: -The process of growing old. In biology, senescence is a process by which a cell ages and permanently stops dividing but does not die. Over time, large numbers of old (or senescent) cells can build up in tissues throughout the body.

Detailed explanation-2: -Cellular senescence occurs when cells stop dividing and growing, but don’t die. This theory suggests that this causes aging. Stem cell theory. Stem cells can turn into other cells, which helps repair tissue and organs.

Detailed explanation-3: -The terms aging and cellular senescence cannot be used interchangeably. Aging is a progressive decline with time whereas senescence occurs throughout the lifespan, including during embryogenesis.

Detailed explanation-4: -Senescence (/sɪˈnɛsəns/) or biological aging is the gradual deterioration of functional characteristics in living organisms.