Transmission of what sort of proteins across neurons has offered hope that a drug or other effective ...

Transmission of what sort of proteins across neurons has offered hope that a drug or other effective therapy for Alzheimer's disease could be developed?
 
  a. tau
  b. gamma
   c. epsilon
   d. psi

Question 2

An individual with irrational and pervasive feelings of sadness may be experiencing _______________.
 
  Fill in the blank(s) with correct word

Question 3

A form of dementia called chronic traumatic encephalopathy (CTE) is caused by
 
  a. chronic alcohol abuse.
  b. a severe drop in beta-amyloid protein levels.
   c. cerebral vascular accident.
  d. repeated head trauma.

Question 4

Approximately one-third of adolescents experiment with _______________ during their teenage years.
 
  Fill in the blank(s) with correct word