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True [87]
3 years ago
10

Which of the following statements concerning the enzyme, telomerase, is true? (Select all that apply.) A) Telomerase removes tel

omeres, making DNA replication more efficient. B) Telomerase is a ribonuclear protein containing a section of RNA complementary to the telomere. C) Telomerase is reactivated in cancer cells, contributing to their immortality. D) If telomerase was inactivated DNA synthesis would stop.
Biology
1 answer:
Bad White [126]3 years ago
7 0

Answer:

B) Telomerase is a ribonuclear protein containing a section of RNA complementary to the telomeres

C. telomerase is reactivated in cancer cells, contributing to their immortality

Explanation:

  • Telomerase elongates telomere ends
  • Telomerase binds to a RNA molecule containing  a sequence complementary to the telomeric repeat.
  • Telomerase is usually not active in somatic cells but is active in cancer cells- the protein acts to extend the shortened telomeres in these cells preventing them from dying
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