Jessica's grandmother has frequent urinary tract infections, which her doctor attributes to an inability of her body to recognize and fight the bacteria that causes it. This is an example of which theory of aging?
A) Autoimmune
B) Cellular
C) Genetic mutation
D) Wear-and-tear
Question 2
Joe has developed kidney failure that his doctor says is due to the kidney cells being at the end of their reproductive cycle. The doctor's explanation reflects which theory of aging?
A) Autoimmune
B) Cellular
C) Genetic mutation
D) Wear-and-tear