Mounting evidence indicates that free radicals __________.
A) multiply nearby cellular material
B) trigger biological aging and accelerate the end of life
C) are not a major contributor to reduced longevity
D) are a major contributor to DNA mutations
Question 2
One hypothesized cause of age-related DNA and cellular abnormalities is the __________.
A) lengthening of telomeres
B) production of androgens
C) release of free radicals
D) increase of synapses