​The Molecular Clock Theory Proposes That Senescence Occurs Because _____

question 2

Multiple Choice

​The molecular clock theory proposes that senescence occurs because _____.

• A) ​telomeres capping the ends of chromosomes become shorter with each cell division and their loss eventually stops the chromosomes from replicating
• B) ​mistakes in the replication of cells or buildup of damaging byproducts from biologic processes eventually destroy the organism
• C) ​unstable oxygen,formed normally during metabolism,can damage cells by initiating reactions that break down cell membranes
• D) ​fast-paced living shortens one's lifespan
• E) ​the genetic code directs cells to divide a certain number of times during their life span

---

Definitions:

Cross-Sectional Study

A research design that analyzes data from a population, or a representative subset, at a specific point in time.

Life Satisfaction

A measure of well-being and contentment with one's life as a whole, reflecting a person's quality of life.

Different Ages

Various stages of life characterized by unique physical, psychological, and social developmental levels.

Median

The middle value in a data set, which separates the higher half from the lower half of the data distribution.