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DNA Structure (AQA GCSE)

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  • What is DNA?
    An atom
    A molecule
    A chemical
    A particle
  • True or false? Bases are attached to phosphates in DNA molecules.
    True
    False
  • Which is faster? Asexual reproduction or sexual reproduction?
    Asexual reproduction
    Sexual reproduction
  • "T" always pairs with...
    A
    C
    G
  • What is a gene?
    It forms the entire genome
    A section of DNA
    Makes up the DNA
  • "G" always pairs with...
    T
    A
    C
  • How many chromosomes are in a body cell?
    10
    13
    23
    46
  • How do we describe the DNA strands?
    Double helix
    Single stranded
    Triple helix
  • "A" always pairs with...
    C
    T
    G
  • How many parents are needed for asexual reproduction?
    2
    4
    3
    1
  • How does the order of bases in a gene determine the protein that is made?
    It determines the order of the chromosome.
    It determines the order of the genome.
    It determines the order of the DNA.
    It determines the order of amino acids.
  • What are the nucleotide bases called?
    A, C, G, T
    A, B, C, D
  • What three things make up a nucleotide?
    Phosphate group, salt, base
    Phosphate group, sucrose, base
    Potassium, sugar, base
    Phosphate group, sugar, base
  • How many chromosomes are in a gamete?
    46
    23
    10
    13
  • How many gametes are produced from a single cell undergoing meiosis?
    1
    3
    4
    2
  • What are the repeating units of DNA called?
    Nucleotides
    Phosphate
    Sugar
    Bases
  • True or false? Mutations occur continuously.
    False
    True
  • How many base pairs code for an amino acid?
    10
    6
    1
    3
  • "C" always pairs with...
    G
    T
    A
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