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5 Written questions

5 Matching questions

  1. inorganic molecule
  2. double helix
  3. amino acids
  4. denaturation
  5. DNA (deoxyribonucleic acid)
  1. a constitute nonliving matter
  2. b a double strand found in DNA. strands are held together by hydrogen bonds between bases
  3. c stores genetic information in the cell and in the organism. it also replicates and transmits this information when it reproduces and when an organism reproduces
  4. d when a protein under goes an irreversible change in shape after being exposed to extremes in heat and pH
  5. e has a central carbon atom with a carboxyl group (COOH) at one end and an amino groupp at the other (NH2)

5 Multiple choice questions

  1. the amount of heat energy needed to raise the temperature of 1g of water 1*C
  2. function for quick fuel and short-term energy storage in all organisms. characterized by the presence of the atomic grouping H--C--OH. ratio of nydrogen atoms to oxygen atoms is 2:1
  3. Polarity within a water molecule causes thy Hydrogen atoms in one molecule to be attracted to the oxygen atoms in other molecules
  4. attracted to water
  5. if the number of carbon atoms in a molecule is low then a carbohydrate is a simple sugar

5 True/False questions

  1. fatof animal origin. solid at room temp


  2. guanine (G)a type of base in DNA. must be paired with adenine


  3. ionic bondthe bond that joins any two amino acids


  4. polypeptidea single chain of amino acids


  5. basea chemical or a combination of chemicals that keeps pH within normal limits