RNA Structure Quiz

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Questions and Answers

What type of bond joins nucleotide polymers in RNA?

  • Ionic bonds
  • Hydrogen bonds
  • Covalent bonds
  • Phosphodiester bonds (correct)

What is the main difference between RNA and DNA?

  • RNA is considerably larger than DNA
  • RNA is double-stranded while DNA is single-stranded
  • RNA contains deoxyribose while DNA contains ribose
  • RNA contains uracil while DNA contains thymine (correct)

What is the function of ribosomal RNA in the cell?

  • To interact with ribosomal proteins (correct)
  • To store genetic information
  • To carry amino acids to the ribosome
  • To catalyze chemical reactions

What is the Svedberg unit?

<p>A unit of molecular weight and shape (D)</p> Signup and view all the answers

What percentage of total RNA in the cell is made up of rRNA?

<p>80% (B)</p> Signup and view all the answers

What type of sugar is found in RNA?

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

What is the function of ribosomal proteins in the cell?

<p>To interact with ribosomal RNA (C)</p> Signup and view all the answers

What type of bond joins nucleotide polymers in RNA?

<p>Phosphodiester bonds (A)</p> Signup and view all the answers

What is the main difference between RNA and DNA?

<p>RNA contains uracil while DNA contains thymine (B)</p> Signup and view all the answers

What is the function of ribosomal RNA in the cell?

<p>To interact with ribosomal proteins (A)</p> Signup and view all the answers

Which of the following is NOT one of the four rRNA species?

<p>5S (C)</p> Signup and view all the answers

What is the Svedberg unit?

<p>A unit of molecular weight and shape (B)</p> Signup and view all the answers

What percentage of total RNA in the cell is made up of rRNA?

<p>80% (A)</p> Signup and view all the answers

What type of sugar is found in RNA?

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

What is the difference between uracil and thymine?

<p>Uracil has a carbonyl group instead of a methyl group like thymine (A)</p> Signup and view all the answers

What is the function of ribosomal proteins in the cell?

<p>To interact with ribosomal RNA (A)</p> Signup and view all the answers

What is the molecular weight and shape of a molecule related to?

<p>The sedimentation rate in a centrifugal field (D)</p> Signup and view all the answers

What type of bond joins the nucleotide polymer in RNA?

<p>Phosphodiester bond (B)</p> Signup and view all the answers

What is the major difference between RNA and DNA?

<p>RNA contains uracil while DNA contains thymine (A)</p> Signup and view all the answers

What is the function of ribosomal RNA in the cell?

<p>Interacting with ribosomal proteins (A)</p> Signup and view all the answers

What is the total percentage of rRNA in the cell?

<p>80% (B)</p> Signup and view all the answers

What are the four rRNA species found in the cell?

<p>28S, 18S, 5.8S, and 5S (B)</p> Signup and view all the answers

What is the Svedberg unit?

<p>A unit of molecular weight and shape (A)</p> Signup and view all the answers

What is the sugar found in RNA?

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

What is the base that replaces thymine in RNA?

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

What is the shape of the phosphodiester bond in RNA?

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

What is the difference between 5S and 5.8S rRNA?

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

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