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(2 exact duplicates found)

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5 Written questions

5 Matching questions

  1. neutron
  2. hydrophilic
  3. pharynx
  4. organic compound
  5. substrate
  1. a A chemical compound containing the element carbon and usually synthesized by cells
  2. b The reactant on which an enzyme works
  3. c An electrically neutral particle (a particle having no electrical charge), found in the nucleus of an atom
  4. d makes sure food goes down digestive tract and air into the esophagus
  5. e likes water

5 Multiple choice questions

  1. The attraction of an atom for the electrons of a covalent bond
  2. links the esophagus to the small intestine; chemical breakdown occurs here
  3. An organic molecule possessing both carboxyl and amino groups
  4. The amount of energy that reactants must absorb before a chemical reaction will start
  5. Molecule which has no separation of charge, so no positive or negative poles are formed

5 True/False questions

  1. carnivoreeats only meat


  2. anusthe smallest unit of matter that retains the properties of an element


  3. atomic numberThe number of protons in the nucleus of an atom, unique for each element and designated by a subscript to the left of the elemental symbol


  4. proteinA three-dimensional biological polymer constructed from a set of 20 different monomers called amino acids


  5. DNAA biological compound consisting of three fatty acids linked to one glycerol molecule