Which statement is true regarding aging?

A) Genetics may partially determine how long a person lives.
B) DNA mutations accumulate as the body ages.
C) Lack of calcium in a person's diet may lead to bone loss.
D) Some proteins become cross-linked and reduce organ function.
E) All of the answer choices are true statements about aging.

Cross-Linked Proteins

Proteins whose amino acid side chains form covalent bonds with each other, stabilizing their structure and affecting their properties.

DNA Mutations

Alterations in the DNA sequence that can lead to changes in gene function and can be inherited or acquired.

Genetics

The branch of biology concerned with the study of genes, genetic variation, and heredity in living organisms.