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5 Written questions

5 Matching questions

  1. disaccharide
  2. purine
  3. carbohydrate
  4. DNA
  5. monosaccharide
  1. a 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
  2. b A double-stranded, helical nucleic acid molecule capable of replicating and determining the inherited structure of a cell's proteins
  3. c A sugar (monosaccharide) or one of its dimers (disaccharides) or polymers (polysaccharides).
  4. d A double sugar, consisting of two monosaccharides joined by dehydration synthesis
  5. e The simplest carbohydrate, active alone or serving as a monomer for disaccharides and polysaccharides. Also known as simple sugars, the molecular formulas of monosaccharides are generally some multiple of CH20

5 Multiple choice questions

  1. A discrete unit of hereditary information consisting of a specific nucleotide sequence in DNA (or RNA, in some viruses)
  2. The subunit that serves as the building block of a polymer
  3. One form of the secondary structure of proteins in which the polypeptide chain folds back and forth, or where two regions of the chain lie parallel to each other and are held together by hydrogen bonds
  4. A chemical process that lyses, or splits, molecules by the addition of water; an essential process in digestion
  5. The building block of a nucleic acid, consisting of a five-carbon sugar covalently bonded to a nitrogenous bas and a phosphate group

5 True/False questions

  1. riboseThe sugar component of RNA

          

  2. amino acidAn organic molecule possessing both carboxyl and amino groups. Amino acids serve as the monomers of proteins

          

  3. polysaccharideA polymer of up to over a thousand monosaccharides, formed by condensation reactions

          

  4. lipidA structural polysaccharide of an amino sugar found in many fungi and in the exoskeletons of all arthropods

          

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