Biochemistry Quiz

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Questions and Answers

What is the best-known nucleic acid?

  • Adenine
  • RNA
  • Cytosine
  • Deoxyribonucleic acid (DNA) (correct)

Which nitrogen bases are classified as purines?

  • Guanine and thymine
  • Cytosine and uracil
  • Adenine and cytosine
  • Adenine and guanine (correct)

What is the role of phosphoric acid in nucleotides?

  • Facilitates protein synthesis
  • Provides the 'acid' in nucleic acid (correct)
  • Carries genetic information
  • Forms the sugar-phosphate backbone

What is a nucleoside?

<p>A combination of a nitrogen base with a 5-carbon sugar (B)</p> Signup and view all the answers

Which nucleotide component approaches another molecule to form nucleic acid?

<p>Hydrogen (the nitrogen base) approaches another molecule that contains an -OH group (a sugar) (B)</p> Signup and view all the answers

Enzymes are not involved in the synthesis of proteins

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

Cytosine and thymine are both purine nitrogen bases

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

Nucleosides are composed of a nitrogen base and a 6-carbon sugar

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

Uracil is found in DNA but not in RNA

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

Phosphoric acid is not a component of nucleotides

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

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