Final answer:
Amyloid plaques form when proteins aggregate and are associated with Alzheimer's disease.
Step-by-step explanation:
Proteins aggregate to form amyloid plaques which cause Alzheimer's. These plaques are dense conglomerations of misfolded beta-amyloid proteins that accumulate in the cerebral cortex of the brain. The accumulation of these plaques is one of the hallmarks of Alzheimer's disease.