Nucleotides and Nucleic Acids Structure in Cell Biology
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 directionality of a nucleic acid?

  • There is no directionality
  • Both directions are possible
  • 5’→3’ (correct)
  • 3’→5’

    • What is the type of bond that connects the sugar and phosphate groups in a nucleic acid?

  • Hydrogen bond
  • Peptide bond
  • Glycosidic bond
  • Phosphodiester bond (correct)

    • What is the shape of the DNA molecule according to the B-Form model?

  • Right-handed, parallel, double-stranded helix
  • Right-handed, antiparallel, double-stranded helix (correct)
  • Left-handed, parallel, double-stranded helix
  • Left-handed, antiparallel, double-stranded helix

    • What is the purpose of Chargaff's Rules in understanding DNA structure?

    <p>To describe the base pairing rules</p> Signup and view all the answers

    What is the spacing of the sugar-phosphate backbone in a DNA molecule?

    <p>34 Å</p> Signup and view all the answers

    What is the direction of nucleotide addition during DNA replication?

    <p>5´ → 3´</p> Signup and view all the answers

    What is the role of the DNA in Kornberg's experiment?

    <p>It served as a template for the synthesis of new DNA</p> Signup and view all the answers

    What is the central dogma of molecular biology?

    <p>DNA → RNA → Protein</p> Signup and view all the answers

    What is the result of the process 'Translating the nucleotide sequence into protein sequence'?

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

    What is the function of pyrophosphatase in DNA replication?

    <p>It breaks down pyrophosphate into inorganic phosphate</p> Signup and view all the answers

    What is the relationship between a DNA sequence and an amino acid sequence?

    <p>One DNA sequence corresponds to one amino acid sequence</p> Signup and view all the answers

    What is the role of RNA polymerase in the transcription process?

    <p>To unwind DNA about ten base pairs at a time</p> Signup and view all the answers

    What is the relationship between the RNA transcript and the DNA template strand?

    <p>The RNA transcript is antiparallel to the DNA template strand</p> Signup and view all the answers

    What is the direction of RNA synthesis during transcription?

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

    What is the role of nucleoside triphosphates (NTPs) in transcription?

    <p>To incorporate nucleotides into the RNA transcript</p> Signup and view all the answers

    What is the function of the promoter region in transcription?

    <p>To specify the start site for RNA synthesis</p> Signup and view all the answers

    What is the relationship between the central dogma and the sequence of amino acids in a protein?

    <p>The sequence of amino acids is encoded in the DNA sequence</p> Signup and view all the answers

    What is the function of the genetic code in translation?

    <p>To specify which amino acids will be used to build a protein</p> Signup and view all the answers

    What is the purpose of the anticodon region of tRNA?

    <p>To base pair with mRNA</p> Signup and view all the answers

    What is the significance of the start codon AUG in translation?

    <p>It initiates protein synthesis</p> Signup and view all the answers

    What is the composition of the small subunit of the ribosome?

    <p>One rRNA molecule and 33 proteins</p> Signup and view all the answers

    What is the role of the ribosome in translation?

    <p>To hold mRNA and charged tRNAs in the correct positions</p> Signup and view all the answers

    What is a characteristic of the genetic code?

    <p>It is redundant and universal</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser