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5 Written questions

5 Matching questions

  1. fatty acid
  2. triacylglycerol
  3. cellulose
  4. pyrimidine
  5. protein
  1. a Three fatty acids linked to one glycerol molecule
  2. b A structural polysaccharide of cell walls, consisting of glucose monomers joined by b-1, 4-glycosidic linkages
  3. c one of two types of nitrogenous bases found in nucleotides, characterized by a six-membered ring. Cytosine (C), thymine (T), and uracil (U)
  4. d a long carbon chain carboxylic acid. fatty acids vary in length and in the number and location of double bonds; three fatty acids linked to a glycerol molecule form fat
  5. e A three-dimensional biological polymer constructed from a set of 20 different monomers called amino acids

5 Multiple choice questions

  1. An extensively branched glucose storage polysaccharide found in the liver and muscle of animals; the animal equivalent of starch
  2. The simplest carbohydrate, active alone or serving as a monomer for disaccharides and polysaccharides. Also known as simple sugars, the molecular formulas of monosaccharides are generally some multiple of CH20
  3. A steroid that forms an essential component of animal cell membranes and acts as a precursor molecule for the synthesis of other biologically important steroids
  4. A discrete unit of hereditary information consisting of a specific nucleotide sequence in DNA (or RNA, in some viruses)
  5. a type of lipid that consists of four carbon rings to which various functional groups are attached

5 True/False questions

  1. condensation reactionA reaction in which two molecules become covalently bonded to each other through the loss of a small molecule, usually water; also called dehydration reaction


  2. beta pleated sheetA polymer (chain) of many amino acids linked together by peptide bonds


  3. peptide bondthe covalent bond between two amino acid units, formed by condensation synthesis


  4. alpha helixA spiral shape constituting one form of the secondary structure of proteins, arising from a specific hydrogen-bonding structure


  5. nucleic acidA polymer (polynucleotide) consisting of many nucleotide monomers; serves as a blueprint for proteins and, through the actions of proteins, for all cellular activities. The two types are DNA and RNA