Peter keeps his mind active by completing a crossword puzzle each day. this may delay the onset of

Peter keeps his mind active by completing a crossword puzzle each day. This may delay the onset of memory decline such as Alzheimer’s disease.

Participation in cognitively stimulating activities may delay onset of the memory decline via its effect on improving cognitive reserve. It has been shown by recent studies that doing a crossword puzzle was associated with delayed onset of memory decline in persons who developed dementia.

the generally accepted parts of modern cell theory include: all known living things are made up of one or more cells. all living cells arise from pre-existing cells by division. the cell is the fundamental unit of structure and function in all living organisms.

a symbiotic relationship with the mitochondria