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5 Written questions

5 Matching questions

  1. Carbohydrates
  2. Ribosomes
  3. amino acid
  4. Enzymes
  5. Nucleic Acids
  1. a general formula (CH2O)n; subunits linked by glycosidic bonds; poly hydroxy aldehydes or ketones and their derivatives; functions- structural support, nutrient and energy.
  2. b DNA and RNA; Basic Unit- nucleotide; Building Blocks- a cyclic pentose sugar; phosphate; nitrogenous base. DNA lacks a hydroxyl group making it more flexible.
  3. c Biological catalysts- specific for a chemical reaction; not used up in that reaction; Apoenzyme: protein.
    Co-factor: non-protein component; Coenzyme- organic cofactor (NAD, FAD); Holoenzyme-Apoenzyme + cofactor.
  4. d proteins and RNA
  5. e +NH3-CHR-COO-; dipolar charges neutralize each other; side chain determines the charge. Carboxylic group and amino group form the peptide bond (H2O leaves). Peptide glycosidic bonds most important; 150 in our body only 20 make proteins. you have 3AA that make a tripeptide 3^3= 27 different combinations. more than 200 AA in a protein on average.

5 Multiple choice questions

  1. one or more double bonds (mostly between 9 and 10); Plant and animals in cold climates.
  2. pyruvate, citrate, malate, etc.
  3. 10s-100s of polysaccharides; storage molecules, i.e., cellulose, chitin, glycogen; linear or branched; made of similar or different subunits.
  4. alters the topology of DNA molecules.
  5. most important are disaccharides; covalent linkages of two monosaccharides with the release of H2O (glycosidic bond). i.e. sucrose, lactose, maltose, etc.

5 True/False questions

  1. NAGN-acetyl neuraminic acid; important sugar acids in bacterial cell walls.


  2. SecondaryThe overall 3D structure of the polypeptide chain. Held together by different bonds: peptide, ionic, hydrogen, covalent, sulfhydryl, etc. Prions are proteins that don't take their correct 3D shape and are harmful; mad cow disease.


  3. Fatty Acidlong hydrocarbon chain ending in a carboxyl group -COOH


  4. Maltoseglucose and galactose


  5. NAMN-acetyl neuraminic acid; important sugar acids in bacterial cell walls.


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