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DNA

Quiz by Zhao

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27 questions
Show answers
  • Q1
    Which scientist(s) is/are credited with discovering the structure of the DNA double-helix?
    James Watson and Francis Crick
    Marie Curie
    Isaac Newton
    Albert Einstein
    30s
  • Q2
    What is the shape of the DNA molecule?
    Single-strand
    Spiral
    Triple-helix
    Coil
    Double-helix
    30s
  • Q3
    What are the building blocks of DNA?
    Nucleotides
    Carbohydrates
    Amino acids
    Lipids
    Proteins
    30s
  • Q4
    What are the four nitrogenous bases found in DNA?
    Guanine, Cytosine, Thymine, Adenine
    Adenine, Guanine, Cytosine, Thymine
    Adenine, Thymine, Cytosine, Uracil
    Uracil, Thymine, Guanine, Cytosine
    Thymine, Adenine, Uracil, Guanine
    30s
  • Q5
    What does DNA stand for?
    Diverse nuclear arrangement
    Digital numerical application
    Distributed network architecture
    Dynamic neural algorithm
    Deoxyribonucleic acid
    30s
  • Q6
    According to Chargaff's rule, which of the following pairs of nucleotide bases are complementary?
    Cytosine and Thymine
    Adenine and Guanine
    Guanine and Cytosine
    Adenine and Thymine
    30s
  • Q7
    Which scientist discovered the pairing rules for DNA bases?
    Rosalind Franklin
    Francis Crick
    James Watson
    Erwin Chargaff
    30s
  • Q8
    In DNA, the term 'antiparallel' refers to:
    The opposite orientation of the two strands
    The genetic code
    The replication of DNA
    The bonding of nucleotides
    30s
  • Q9
    Which of the following correctly describes the term 'antiparallel' in DNA?
    The two DNA strands run in opposite directions
    The two DNA strands run in the same direction
    The two DNA strands are identical in sequence
    The two DNA strands are complementary in base pairing
    30s
  • Q10
    What type of bond holds the two strands of DNA together?
    Van der Waals forces
    Ionic bonds
    Covalent bonds
    Hydrogen bonds
    30s
  • Q11
    Which of the following nitrogenous bases is NOT found in DNA?
    Uracil
    Cytosine
    Adenine
    Guanine
    30s
  • Q12
    What is the primary function of hydrogen bonds in DNA?
    To catalyze DNA replication
    To regulate gene expression
    To store genetic information
    To stabilize the double helix structure
    30s
  • Q13
    Which of the following is true about hydrogen bonds in DNA?
    They are formed between the sugar-phosphate backbone
    They are relatively weak compared to covalent bonds
    They are stronger than ionic bonds
    They are completely absent in RNA
    30s
  • Q14
    What is the function of DNA polymerase in DNA replication?
    To unwind the DNA double helix
    To synthesize new DNA strands
    To proofread and repair DNA
    To join Okazaki fragments
    30s
  • Q15
    During DNA replication, which direction does the DNA polymerase synthesizes the new DNA strand?
    From the middle towards ends
    3' to 5'
    5' to 3'
    Randomly in both directions
    30s

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