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of 36 available terms

5 Written Questions

5 Matching Questions

  1. polar molecule
  2. enzyme
  3. electron
  4. element
  5. acid
  1. a molecule with oppositely charged regions
  2. b substance that releases hydrogen ions (H+) when dissolved in water; an acidic solution has a pH less than 7.
  3. c negatively charged particle that occupies space around an atom's nucleus.
  4. d pure substance composed of only one type of atom; cannot be broken down into another substance by physical or chemical means
  5. e protein that speeds up a biological reaction by lowering the activation energy needed to start the reaction

5 Multiple Choice Questions

  1. atom that is negatively or positively charged because it have lost or gained one or more electrons.
  2. substance dissolved in a solvent.
  3. carbon compound joined by peptide bonds; building block of proteins.
  4. hydrophobic biological molecule composed mostly or carbon and hydrogen; fats, oils, and waxes are lipids
  5. positively charged particle in an atom's nucleus.

5 True/False Questions

  1. carbohydratereactant to which an enzyme binds

          

  2. compoundsubstance dissolved in a solvent.

          

  3. chemical reactionnegatively charged particle that occupies space around an atom's nucleus.

          

  4. substratesubstance that releases hydroxide ions (OH-) when dissolved in water; a basic solution has a pH greater than 7.

          

  5. active sitecarbon compound joined by peptide bonds; building block of proteins.

          

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