Biological molecules

Cards (56)

  • What do carbohydrates literally mean?
    Hydrated carbon
  • What is the primary use of carbohydrates in the human body?
    ATP production during respiration
  • How are carbohydrates stored in the liver and muscles?
    As glycogen
  • What are monosaccharides?
    Simple carbohydrates known as monomers
  • What is the general formula for monosaccharides?
    C, H, O
  • What are the two types of carbohydrates mentioned?
    Monosaccharides and polysaccharides
  • What is the difference between a monomer and a polymer?
    A monomer is a single unit; a polymer is many
  • What is glucose classified as?
    A hexose sugar
  • What does it mean for glucose to be a polar molecule?
    It is soluble in water
  • How many carbons does glucose contain?
    Six
  • What are the two structural forms of glucose?
    Alpha and beta glucose
  • What are isomers?
    Molecules with the same chemical formula
  • Where is the hydroxyl group on alpha glucose?
    Below the ring structure
  • Where is the hydroxyl group on beta glucose?
    Above the ring structure
  • What is glycogen used for?
    Energy storage in liver and muscles
  • What is cellulose used for?
    To form plant cell walls
  • What are proteins made from?
    Amino acids
  • What elements are amino acids made from?
    Carbon, hydrogen, oxygen, and nitrogen
  • What do amino acids join together to form?
    A polypeptide
  • What is the primary structure of a protein?
    The specific sequence of amino acids
  • What determines how a protein folds into a specific shape?
    The unique sequence of amino acids
  • What bonds are present in the primary structure of proteins?
    Peptide bonds
  • What is the secondary structure of a protein?
    Folding into alpha helices or beta sheets
  • What holds the secondary structure together?
    Hydrogen bonds
  • What is the tertiary structure of a protein?
    Folding into a precise 3D shape
  • What bonds hold the tertiary structure together?
    Various bonds between amino acid groups
  • What is quaternary structure in proteins?
    More than one polypeptide chain
  • What is a prosthetic group?
    A chemical group not made of amino acids
  • What are globular proteins?
    Soluble proteins with various functions
  • How many polypeptide chains does haemoglobin have?
    Four
  • What does each polypeptide chain in haemoglobin contain?
    One prosthetic group called haem
  • What is collagen?
    A fibrous protein in connective tissue
  • Why is collagen insoluble in tissue fluid?
    To prevent it from dissolving
  • What are glycoproteins?
    Proteins with carbohydrates attached
  • What role do glycoproteins play in cell membranes?
    Cell recognition and signaling
  • What are triglycerides primarily used for?
    Energy storage
  • How do triglycerides compare to carbohydrates in energy content?
    They provide twice as much energy per gram
  • What are triglycerides made from?
    One glycerol and three fatty acids
  • What type of bonds attach fatty acids to glycerol?
    Ester bonds
  • What are the two types of fatty acids?
    Saturated and unsaturated