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of 121 available terms
(2 exact duplicates found)

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5 Written questions

5 Matching questions

  1. polar molecule
  2. solution
  3. monosaccharide
  4. quaternary structure
  5. trachea
  1. a A molecule (such as water) with opposite charges on opposite sides
  2. b The simplest carbohydrate, active alone or serving as a monomer for disaccharides and polysaccharides
  3. c The particular shape of a complex, aggregate protein, defined by the characteristic three-dimensional arrangement of its constituent subunits, each a polypeptide
  4. d conveys air to and from the lungs
  5. e A homogeneous, liquid mixture of two or more substances

5 Multiple choice questions

  1. Rhythmic waves of contraction of smooth muscle that push food along the digestive tract
  2. An extensively branched glucose storage polysaccharide found in the liver and muscle of animals; the animal equivalent of starch
  3. An attraction between two atoms resulting from a sharing of outer-shell electrons or the presence of opposite charges on the atoms; the bonded atoms gain complete outer electron shells
  4. A polymer (chain) of many amino acids linked together by peptide bonds
  5. The total amount of kinetic energy due to molecular motion in a body of matter

5 True/False questions

  1. bufferA substance that consists of acid and base forms in a solution and that minimizes changes in pH when extraneous acids or bases are added to the solution

          

  2. MouthA substance that is dissolved in a solution

          

  3. active siteThe specific portion of an enzyme that attaches to the substrate by means of weak chemical bonds

          

  4. carnivoreA protein serving as a catalyst, a chemical agent that changes the rate of a reaction without being consumed by the reaction

          

  5. double helixThe form of native DNA, referring to its two adjacent polynucleotide strands wound into a spiral shape