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5 Written questions

5 Matching questions

  1. Enzyme Activity
  2. Primary
  3. precursors from the environment
  4. metabolic intermediates
  5. Supra Molecular Assemblies
  1. a the actual sequence of the amino acids
  2. b temperature- denature and breaks H bonds; pH; substrate concentration; inhibitors (antibiotics) inhibit enzymatic functions
  3. c CO2, H2O, NH3, N2, etc.
  4. d m. wt. = 10^6-10^9; ribosomes, enzyme complexes, contractile systems, microtubules.
  5. e pyruvate, citrate, malate, etc.

5 Multiple choice questions

  1. Needed to disrupt electronic configurations; physiological temperature and pressure too low for most chemical reactions to take place. Enzymes serve to speed up reactions by lowering activation energy.
  2. amino acid with another component; glycoprotein; nucleoprotein; lipoprotein; phosphoprotein.
  3. DNA and RNA; Basic Unit- nucleotide; Building Blocks- a cyclic pentose sugar; phosphate; nitrogenous base. DNA lacks a hydroxyl group making it more flexible.
  4. fats; long complex hydrocarbon chains; triglycerides, phospholipids in membranes, steroids like cholesterol; are non polar; function in energy storage and the structure of membranes; CH3(CH2)nCOOH n=14-22
  5. End-product allosterically inhibits the action of first enzyme in pathway. prevents cell from wasting resources.

5 True/False questions

  1. RibosomesBiological 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.

          

  2. NucleosideSugar + Base + Phosphate; N-glycosidic bond- base; phosphodiester bond- phosphate

          

  3. ProteinsMade up of repeating units of amino acids (about 20 types); Subunits linked by peptide bonds forming polymers; Function: structural support, antibodies, contractile fibers, toxins, transport.

          

  4. RNAantiparallel orientation of complimentary strands; DNA is supercoiled in the cells; denaturation and renaturation. ssDNA absorbs more light. RNA can compete with ssDNA hybridization.

          

  5. Oligosaccharidesmost important are disaccharides; covalent linkages of two monosaccharides with the release of H2O (glycosidic bond). i.e. sucrose, lactose, maltose, etc.

          

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