How does DNA replication work?     Experiment:  free nucleotides containing radioactive thymine (T) are added to media containing an actively dividing cell (…and the cell uses these radioactive thymines during the process of DNA replication!).    Which of the following outcomes would be seen after a single cell division?  

  BONUS #4 Accuracy in the translation of mRNA into the primary structure of a polypeptide depends on specificity in the ________.  

  We talked about the regulation of gene expression and how it can happen at different steps.  Which of the following is an example of post-transcriptional (= after transcription!) control of gene expression?  (hint:  it’s really important in explaining the complexity found in Homo sapiens!!!)  

The following question refers to this table of codons.   What amino acid sequence will be generated based on the following mRNA codon sequence?   5′-AUG-UCU-UCG-UUA-UCC-UUG-3′

  This question is easy…. think about complementary base pairing!  If a sample of double-stranded DNA contains 20% thymine (T), calculate the percentages of A, C, and G.  Approximately what percent of the nucleotides in this sample will be guanine (G)?  

  CH14 vocabulary (part 2)… match the term to the correct definition (hint: copied primarily from quizlets!)  

  CH13 vocabulary (part 2)… match the term to the correct definition (hint: copied directly from quizlets!)  

Use the figure to answer the following question (hint: pay attention to orientation)     Referring to the figure, what bases will be added as DNA REPLICATION proceeds on the bottom strand?  

  Easy!!!!  According to the central dogma (the more simplified version!!!!), what is the intermediate molecule involved in the flow of information in a cell (goes from the nucleus out to the cytoplasm) that should go in the blank?                       DNA → ________ → PROTEIN  

  Regulation of gene expression is primarily done at the pre-transcriptional (i.e. chromatin modification) and/or transcriptional level.   Post-transcriptional mechanisms typically only play “supporting” roles.