Questions: The enzyme that rebuilds telomeres in cancer cells is called

The enzyme that rebuilds telomeres in cancer cells is called telomerase.

Explanation:

• Telomerase is an enzyme that adds repetitive nucleotide sequences to the ends of chromosomes, known as telomeres. This process helps maintain the length of telomeres, which are otherwise shortened during cell division.
• In most somatic cells, telomerase activity is low or absent, leading to gradual telomere shortening and eventual cell aging or death.
• However, in cancer cells, telomerase is often reactivated, allowing these cells to divide indefinitely and become "immortal," contributing to tumor growth and progression.