Molecular Genetics: DNA Structure and Chargaff's Rule
23 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

What is the characteristic of B DNA?

  • Left-handed helix with 10 residues per turn
  • Right-handed helix with 10 residues per turn (correct)
  • Right-handed helix with 11 base pairs per turn
  • Left-handed helix with 12 base pairs per turn

    • What is the number of hydrogen bonds between Adenine and Thymine?

  • 4
  • 1
  • 3
  • 2 (correct)

    • What is the shape of Z DNA?

  • Linear structure
  • Left-handed helix (correct)
  • Circular structure
  • Right-handed helix

    • What is the genetic code responsible for?

    <p>Specifying the sequence of amino acids in proteins</p> Signup and view all the answers

    What is the purpose of the codons in the genetic code?

    <p>To specify the sequence of amino acids</p> Signup and view all the answers

    What is the function of a typical protein?

    <p>Participating in metabolic processes</p> Signup and view all the answers

    What is the total number of codons in the genetic code?

    <p>64</p> Signup and view all the answers

    What is the function of the enzyme primase in DNA replication?

    <p>To start DNA replication by synthesizing RNA primers</p> Signup and view all the answers

    What is the characteristic of the genetic code that ensures that a specific codon always codes for the same amino acid?

    <p>Unambiguous</p> Signup and view all the answers

    During DNA replication, what is the direction of synthesis of new DNA strands?

    <p>5' to 3'</p> Signup and view all the answers

    What is the result of DNA replication?

    <p>Two identical double-stranded DNA</p> Signup and view all the answers

    What is the function of the origin recognition complex (ORC) in DNA replication?

    <p>To recognize the origin of replication</p> Signup and view all the answers

    What is the primary function of topoisomerases during DNA replication?

    <p>To relieve torsional strain that results from helicase-induced unwinding</p> Signup and view all the answers

    Which enzyme is responsible for removing mismatched nucleotides during DNA replication?

    <p>DNA polymerase III</p> Signup and view all the answers

    What is the direction of synthesis of the leading strand in DNA replication?

    <p>5' to 3'</p> Signup and view all the answers

    Which enzyme is responsible for synthesizing short segments of complementary RNA primers during DNA replication?

    <p>Primase</p> Signup and view all the answers

    What is the characteristic of the lagging strand in DNA replication?

    <p>It is synthesized in short, discontinuous segments</p> Signup and view all the answers

    What is the function of DNA ligase in the replication process?

    <p>To seal the nick by catalyzing the formation of a phosphodiester bond</p> Signup and view all the answers

    Which of the following RNA polymerases is responsible for synthesizing tRNA?

    <p>Pol III</p> Signup and view all the answers

    What is the function of enhancers in the transcription process?

    <p>To stimulate transcription rate</p> Signup and view all the answers

    What is the function of introns in the post-transcriptional modification process?

    <p>To be removed and spliced out of the RNA transcript</p> Signup and view all the answers

    What is the function of tRNA in the translation process?

    <p>To carry amino acids to the growing polypeptide chain</p> Signup and view all the answers

    What is the sequence of the translated protein in the given example?

    <p>NH2 - Met - Tyr - Stop - His - COOH</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser