DNA Structure Quiz
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Questions and Answers

What is the main function of genes in DNA?

  • To pair nitrogenous bases
  • To condense DNA into chromosomes
  • To form the structure of DNA
  • To carry genetic information (correct)

Why is base pairing crucial for the structure of DNA?

  • To condense DNA into chromatin
  • To maintain the double helical structure (correct)
  • To determine the sugar-phosphate backbone
  • To regulate gene expression

Where does the transcription process, converting DNA into mRNA, occur?

  • In the nucleus (correct)
  • In the cytoplasm
  • In the mitochondria
  • In the ribosome

Which elements make up a nucleotide in DNA?

<p>Sugar, phosphate group, nitrogenous base (D)</p> Signup and view all the answers

What are the nitrogenous bases classified as in DNA?

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

What is the purpose of DNA replication?

<p>To create two identical copies of DNA for cell division (B)</p> Signup and view all the answers

Which enzyme is responsible for breaking the hydrogen bonds between the bases of DNA during replication?

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

What is the directionality of the leading strand during DNA replication?

<p>5'-3' (A)</p> Signup and view all the answers

Which molecule contains uracil as one of its nitrogenous bases?

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

Who played a significant role in uncovering the double helical structure of DNA?

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

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