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A-level year 1 Ch1 Biological molecules

Quiz by Lauren McEwen

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62 questions
Show answers
  • Q1
    What is in the nucleus of an atom
    Protons & electrons
    Neutrons only
    Protons & neutrons
    Neutrons & electrons
    30s
  • Q2
    What is the charge on an electron?
    +1
    0
    -1
    30s
  • Q3
    What is an ion?
    An atom with extra neutrons
    An atom that has lost a proton
    An atom joined to another atom
    An atom which has lost or gained an electron
    30s
  • Q4
    What is a molecule?
    Two or more atoms joined together
    An atom that has lost a neutron
    Different types of atoms that are not bound together.
    An atom that has lost an electron
    30s
  • Q5
    What is a covalent bond?
    A bond between ions
    A bond between atoms that have lost or gained electrons
    A bond between two atoms involving the sharing of electrons
    30s
  • Q6
    Between which two ions would an ionic bond form?
    Na+ and Li+
    Na+ and Cl-
    Cl- and F-
    None of these
    30s
  • Q7
    Are ionic bonds stronger or weaker than covalent bonds?
    Weaker
    Stronger
    30s
  • Q8
    How are polarised molecules attracted to each other?
    Charge is unevenly distributed so the molecule has a negatively and positively charged area; these are attracted to similarly charged areas on other molecules.
    Charge is unevenly distributed so the molecule has a negatively and positively charged area; these are attracted to oppositely charged areas on other molecules.
    30s
  • Q9
    Which word describes a long chain of repeating sub units?
    Molecule
    Atom
    Monomer
    Polymer
    30s
  • Q10
    The prefix mono- before a word means...
    None
    Two
    One
    Many
    30s
  • Q11
    The prefix poly- before a word means...
    Many
    None
    Two
    One
    30s
  • Q12
    What are the monomers that make up carbohydrate molecules known as?
    Fatty acids
    Glycerol
    Amino acids
    Monosaccharides
    30s
  • Q13
    The mole is a measure of...
    Mass of a substance
    Amount of substance
    Weight of a substance
    Volume of a substance
    30s
  • Q14
    What test is used to detect the presence of a reducing sugar?
    Emulsion
    Benedict's test
    Biuret
    Iodine
    30s
  • Q15
    What colour indicates a positive Benedict's test?
    Brick red
    Blue
    Cloudy-white
    Purple
    30s

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