AP BIOLOGY

Detailed explanation-1: -Telomerase is an RNA-dependent DNA polymerase, meaning an enzyme that can make DNA using RNA as a template. How does telomerase work? The enzyme binds to a special RNA molecule that contains a sequence complementary to the telomeric repeat.

Detailed explanation-2: -Telomerase is a large ribonucleoprotein complex responsible for progressive synthesis of telomeric DNA repeats (TTAGGG) at the 3′ ends of linear chromosomes, thereby reversing the loss of DNA from each round of replication.

Detailed explanation-3: -The last step of DNA replication is termination. There are three main steps to DNA replication.

Detailed explanation-4: -Telomeres are structures made from DNA sequences and proteins found at the ends of chromosomes. They cap and protect the end of a chromosome like the end of a shoelace. In almost all animals, from the simplest to the most complex, telomeres are required for cell division.

Detailed explanation-5: -Telomerase is a reverse transcriptase that adds telomeric repeats to the 3′ ends of each chromosome (3).