According to the random events view, as spontaneous or externally caused mutations accumulate, __________.
A) cell repair becomes more efficient
B) abnormal cancerous cells are often produced
C) cell replacement becomes more efficient
D) telomeres lengthen, protecting the aging cell
Question 2
According to the random events theory of biological aging, __________.
A) DNA in body cells is gradually damaged through mutations
B) as time goes on, the human body wears out from repeated use
C) aging genes control the deterioration of body cells
D) environmental factors have little impact on human aging
Lyme disease and other infections are caused by the bite of a tick.
Close-up view of Pluto's mountains, frozen plains and hazes
microscope view of an onion root tip
Blisters caused by HSV-1.
Satellite View of Midlatitude Cyclone
The Dermatomes: Posterior View