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5 Written questions

5 Matching questions

  1. purine
  2. dehydration reaction
  3. RNA
  4. cholesterol
  5. cellulose
  1. a A chemical reaction in which two molecules covalently bond to each other with the removal of a water molecule
  2. b A steroid that forms an essential component of animal cell membranes and acts as a precursor molecule for the synthesis of other biologically important steroids
  3. c a nitrogenous base that has a double-ring structure; one of the two general categories of nitrogenous bases found in DNA and RNA; either adenine or guanine
  4. d A type of nucleic acid consisting of nucleotide monomers with a ribose sugar and the nitrogenous bases adenine (A), cytosine (C), guanine (G), and uracil (U); usually single-stranded; functions in protein synthesis and as the genome of some viruses
  5. e A structural polysaccharide of cell walls, consisting of glucose monomers joined by b-1, 4-glycosidic linkages

5 Multiple choice questions

  1. An organic molecule possessing both carboxyl and amino groups. Amino acids serve as the monomers of proteins
  2. A spiral shape constituting one form of the secondary structure of proteins, arising from a specific hydrogen-bonding structure
  3. A long molecule consisting of many similar or identical monomers linked together
  4. Three fatty acids linked to one glycerol molecule
  5. A double-stranded, helical nucleic acid molecule capable of replicating and determining the inherited structure of a cell's proteins

5 True/False questions

  1. condensation reactionA chemical reaction in which two molecules covalently bond to each other with the removal of a water molecule

          

  2. polypeptideA polymer (chain) of many amino acids linked together by peptide bonds

          

  3. steroidA storage polysaccharide in plants consisting entirely of glucose

          

  4. starcha type of lipid that consists of four carbon rings to which various functional groups are attached

          

  5. nucleic acidA polymer (polynucleotide) consisting of many nucleotide monomers; serves as a blueprint for proteins and, through the actions of proteins, for all cellular activities. The two types are DNA and RNA