How Much Do You Know About Telomeres and Aging?

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Questions and Answers

What is the average telomere length in humans at birth?

  • Less than 4 kb
  • 4 kb
  • 11 kb (correct)
  • More than 11 kb

What is the enzyme responsible for synthesizing complementary DNA from RNA template?

  • Telomerase
  • Reverse transcriptase (correct)
  • RNA-dependent DNA polymerase
  • Euchromatin

What is the composition of telomerase?

  • DNA nucleotides and RNA polymerase
  • DNA nucleotides and reverse transcriptase
  • RNA nucleotides and reverse transcriptase (correct)
  • RNA nucleotides and DNA polymerase

What is the effect of shortening telomeres in somatic cells?

<p>Cell death (C)</p> Signup and view all the answers

What is the function of euchromatin?

<p>Affecting genes (B)</p> Signup and view all the answers

What happens to telomeres with old age?

<p>They disappear (B)</p> Signup and view all the answers

What is the role of RNA-dependent DNA polymerase?

<p>To synthesize DNA from RNA template (A)</p> Signup and view all the answers

What is the natural state of telomerase activity in normal somatic cells?

<p>Naturally inhibited (A)</p> Signup and view all the answers

What is the effect of losing euchromatin?

<p>Cell death (C)</p> Signup and view all the answers

What is the template for RNA nucleotides in telomerase?

<p>UCCCAA (C)</p> Signup and view all the answers

What is the enzyme activity of reverse transcriptase?

<p>RNA-dependent DNA polymerase (A)</p> Signup and view all the answers

What is the effect of telomerase activity in somatic cells?

<p>Cell multiplication (C)</p> Signup and view all the answers

What is the average telomere length in humans at birth?

<p>11 kb (C)</p> Signup and view all the answers

What is the enzyme responsible for synthesizing complementary DNA from RNA template?

<p>Reverse transcriptase (B)</p> Signup and view all the answers

What is the composition of telomerase?

<p>RNA nucleotides and reverse transcriptase (A)</p> Signup and view all the answers

What is the effect of shortening telomeres in somatic cells?

<p>Cell death (D)</p> Signup and view all the answers

What is the function of euchromatin?

<p>Affecting genes (A)</p> Signup and view all the answers

What happens to telomeres with old age?

<p>They disappear (B)</p> Signup and view all the answers

What is the role of RNA-dependent DNA polymerase?

<p>To synthesize DNA from RNA template (B)</p> Signup and view all the answers

What is the natural state of telomerase activity in normal somatic cells?

<p>Naturally inhibited (C)</p> Signup and view all the answers

What is the effect of losing euchromatin?

<p>Cell death (D)</p> Signup and view all the answers

What is the template for RNA nucleotides in telomerase?

<p>UCCCAA (D)</p> Signup and view all the answers

What is the enzyme activity of reverse transcriptase?

<p>RNA-dependent DNA polymerase (C)</p> Signup and view all the answers

What is the effect of telomerase activity in somatic cells?

<p>Cell multiplication (B)</p> Signup and view all the answers

What is the average length of telomeres in humans at birth?

<p>11 kb (C)</p> Signup and view all the answers

What is the enzyme responsible for synthesizing complementary DNA from RNA template?

<p>Reverse transcriptase (A)</p> Signup and view all the answers

What is the capacity of RNA-dependent DNA polymerase?

<p>To synthesize DNA from RNA template (D)</p> Signup and view all the answers

What is the effect of telomere shortening on genes?

<p>It affects gene expression (B)</p> Signup and view all the answers

What is the composition of telomerase?

<p>Both RNA nucleotides and RT enzyme activity (D)</p> Signup and view all the answers

What is the function of telomerase in normal somatic cells?

<p>To inhibit telomere shortening (A)</p> Signup and view all the answers

What is the effect of telomere shortening on cell division in eukaryotes?

<p>It affects cell division (A)</p> Signup and view all the answers

What is the effect of telomere shortening on telomeres themselves?

<p>It affects telomeres (D)</p> Signup and view all the answers

What is the enzyme activity of reverse transcriptase (RT)?

<p>RNA-dependent DNA polymerase (B)</p> Signup and view all the answers

What is the effect of telomere shortening on telomerase activity in normal somatic cells?

<p>It inhibits telomerase activity (D)</p> Signup and view all the answers

What is the effect of telomere shortening on telomere length in humans?

<p>It shortens telomere length (B)</p> Signup and view all the answers

What is the effect of telomerase activity in normal somatic cells?

<p>It inhibits telomere shortening (D)</p> Signup and view all the answers

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