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Biological molecules 1 (YR9)

Quiz by Mr R Horn

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20 questions
Show answers
  • Q1
    What did the Miller-Urey experiments tell us about life on Earth?
    Question Image
    All living things are related, as we are all descendants of a common ancestor cell that formed approximately 3.95 billion years ago
    Life probably originated from outer space and arrived on the Earth in a comet or meteorite
    All proteins are made up of long chains of amino acids, folded to form a specific shape
    Some complex biological molecules can form in the absence of living things (given the conditions found on the Earth 4 billion years ago)
    30s
  • Q2
    What is a polymer?
    A shape with many sides
    A single subunit of a large molecule (eg an amino acid)
    Any biological molecule that is made up of lots of atoms
    A molecule made up of repeating subunits (called monomers)
    30s
  • Q3
    What type of molecule is glucose
    Carbohydrate
    Protein
    Nucleic acid
    Lipid (fat)
    30s
  • Q4
    Which monomer joins together to form a polypeptide (protein)
    Amino acid
    Monosaccharide
    Glycerol
    Glucose
    30s
  • Q5
    Which of the following is NOT a polysaccharide?
    Starch
    Cellulose
    Haemoglobin
    Glycogen
    30s
  • Q6
    What is the term used for a single carbohydrate monomer (subunit)?
    Monocarbohydrate
    Polysaccharide
    Monosaccharide
    Disaccharide
    30s
  • Q7
    Which polysaccharide is found in plant cell walls?
    Cellulose
    Glycogen
    Starch
    Haemoglobin
    30s
  • Q8
    How many different types of amino acid are found in human proteins?
    Approximately 1,000
    Approximately 50,000
    3
    20
    30s
  • Q9
    The exact sequence of the amino acids in a protein is known as its ...?
    tertiary (3rd) structure
    quaternary (4th) structure
    primary structure
    secondary structure
    30s
  • Q10
    The combination of 2 or more polypeptides (protein subunits) to form a functioning protein is known as its ...?
    tertiary (3rd) structure
    primary structure
    quaternary (4th) structure
    secondary structure
    30s
  • Q11
    What is the term used for 2 carbohydrate monomers (subunits) joined together?
    Disaccharide
    Monosaccharide
    Polysaccharide
    Monocarbohydrate
    30s
  • Q12
    Which of the following is a disaccharide?
    Glucose
    Starch
    Sucrose
    Glycerol
    30s
  • Q13
    Which of the following is NOT one of the main functions of proteins
    Fighting disease (antibodies)
    Transporting oxygen
    Energy store
    Structural (keratin)
    30s
  • Q14
    Which elements are found in all carbohydrates?
    Carbon, hydrogen and nitrogen
    Carbon, hydrogen and oxygen
    Carbon, nitrogen and sulfur
    Carbon, hydrogen and phosphorus
    30s
  • Q15
    Which elements are found in all proteins?
    Carbon, hydrogen, sulfur and nitrogen
    Carbon, nitrogen and sulfur
    Carbon, hydrogen, oxygen and nitrogen
    Carbon, hydrogen and phosphorus
    30s

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