Monday, April 28, 2014

Monday April 28, 2014

                                     AP Biology Free- Response Question

2.) Information flow in cells can be regulated by various mechanisms.
    (a.) Describe the role of Three of the following in the regulation of protein synthesis:

  • RNA splicing 
  • repressor protein 
  • methylation
  • siRNA
   (b.) Information flow can be altered by mutations. Describe THREE different types of mutations and their effects on the protein synthesis.
   (c.) Identify TWO environmental factors that increase the mutation rate in an organism, and discuss their effects on the genome of the organism.
   (d.) Epigenetics is the study of heritable changes in the phenotype caused by mechanisms other than changes in the DNA sequence. Describe ONE example of epigenetic inheritance.

Please have both timed free responses by Friday ONLY if you have been absent.  Per.1 and per.5 will do The above timed FR on Wed. April 20.  Per 2 will do it Thurs.

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