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5 Written questions

5 Matching questions

  1. Macromolecules
  2. SImple Proteins
  3. Secondary
  4. Nucleic Acids
  5. metabolic intermediates
  1. a The localized twisting and folding of the polypeptide chain. A specific orientation in space. Two main types: the alpha helix and the beta sheet. Helix- parallel some of the strongest; alpha keratin-nails; spiderwebs. Pleated sheet- anti-parallel; Beta keratin- silk. 18% of all proteins are one of these two shapes; others are random coiling
  2. b pyruvate, citrate, malate, etc.
  3. c m. wt. 10^3- 10^9; nucleic acids, proteins, lipids, polysaccharides. 4 most important to study.
  4. d DNA and RNA; Basic Unit- nucleotide; Building Blocks- a cyclic pentose sugar; phosphate; nitrogenous base. DNA lacks a hydroxyl group making it more flexible.
  5. e contains only amino acids

5 Multiple choice questions

  1. the actual sequence of the amino acids
  2. Fats or triglycerides= glycerol plus one or more fatty acids.
  3. glucose and fructose; bad for teeth
  4. Contain elements such as phosphorus, nitrogen, and sulfur; phospholipids form membranes (have polar head group); Main structural component of the cell membrane.
  5. glucose and glucose; glucose is a bad sugar

5 True/False questions

  1. Oligosaccharidesmost important are disaccharides; covalent linkages of two monosaccharides with the release of H2O (glycosidic bond). i.e. sucrose, lactose, maltose, etc.


  2. Ketosefruit sugar mostly; but found in plants and animals also


  3. Carbohydratesgeneral formula (CH2O)n; subunits linked by glycosidic bonds; poly hydroxy aldehydes or ketones and their derivatives; functions- structural support, nutrient and energy.


  4. NAMN-acetyl muramic acid; important sugar acids in bacterial cell walls


  5. Lipidsfats; long complex hydrocarbon chains; triglycerides, phospholipids in membranes, steroids like cholesterol; are non polar; function in energy storage and the structure of membranes; CH3(CH2)nCOOH n=14-22