When describing aging, Dr. Dog says, "It is almost as if we are all born with a biological death clock that starts cells dividing at conception and later stops the cells so we die." Dr. Dog's comments fit best with

Question

Quizplus · Accepted Answer

Dr. Dog's comments are consistent with the Hayflick limit, which refers to the maximum number of times a cell can divide before it stops dividing, leading to cellular aging and death. The reference to a "biological death clock" that starts at conception and stops cells later is consistent with the Hayflick limit. The other answer choices (free radical theory, damage theory of aging, concept of average life expectancy at birth) are not directly related to Dr. Dog's comments.

When Describing Aging, Dr