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5 Written questions

5 Matching questions

  1. glycosidic linkage
  2. polypeptides
  3. dehydration reaction
  4. double helix
  5. primary structure
  1. a when two monomers connect to each other by a reaction in which a hydroxyl group covalently bonds to a hydrogen atom, which causes the loss of a water molecule in the process
  2. b polymers of all amino acids
  3. c the unique structure of amino acids; example: a polypeptide composed of 127 amino acids has 20^127 different ways it can be organized
  4. d a covalent bond formed between two monosaccharides by a dehydration reaction; the most common type of this in nature is a "1-4"
  5. e the shape that cellular DNA molecules take as a result of spiraling around an imaginary axis; this was proposed by James Watson and Francis Crick in 1953 at Cambridge University

5 Multiple choice questions

  1. a sugar (monosaccharide) or one of its dimers (disaccharides) or polymers (polysaccharides)
  2. the type of protein that selectively accelerates chemical reactions; example: digestive enzymes release polymers in food
  3. a fat that consists of three fatty acids linked to one glycerol molecule; linkages that bond hydroxyl to carboxyl are called ester linkages
  4. molecule that consists of two monosaccharides joined by a glycosidic linkage
  5. the type of protein that controls movement; example: actin and myosin are responsible for the contraction of muscles; other proteins are responsible for the undulations of cilia and flagella

5 True/False questions

  1. cellulosespecialized macromolecules that speed up chemical reactions in cells; considered proteins


  2. nucleotidethe monomer of nucleic acids that has three parts: 1) a nitrogenous base (A, C, G, T, U); 2) a give-carbon sugar (a pentose); 3) a phosphate group


  3. deoxyribonucleic acida type of nucleic acid consisting of nucleotide monomers with a ribose sugar and nitrogenous bases adenine, cytosine, guanine, and uracil; usually single-stranded; functions in protein synthesis, gene regulation, and as the genome of some viruses


  4. purinesmacromolecules that are constructed from one or more polypeptides, each folded and coiled into a specific three-dimensional structure; all made from same 20 amino acids; most structurally sophisticated molecule known


  5. catalystschemical agents that selectively speed up chemical reactions without being consumed by the reaction; can be seen as workhorses that keep cells running by carrying out processes of life


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