Keep  In the illustration below, “original” (template) DNA polynucleotides are yellow, “new” (copy) DNA polynucleotides are blue.  The 3 DNA molecules in the top row show polynucleotide composition before replication.  The DNA molecules in the bottom row show polynucleotide composition after replication.  Which one of the lettered illustrations correctly shows the semiconservative model of DNA replication?  

Keep.  Which one of the following is true of the primers used during DNA replication?

Keep.  Below are several representations of messenger RNA.  Rather than type out nitrogenous bases I am, representing sequences with the words Intron or Exon to indicate whether that particular segment of mRNA is an intron or an exon.  Which representation shows an mRNA molecule after processing (all steps of mRNA processing have taken place).

Keep.  Which one of the following best describes the order of events when the telomeres of chromosomes in germ cells are extended to “solve” the end of replication problem?

Explain where the mitochondrial intermembrane space is located within mitochondria.

The flow of electrons down the electron transport chain is used to do what in mitochondria?

Keep.  Which one of the following mutations is least likely to have a significant effect on the function of a polypeptide?

Keep.  Match the process with the correct cellular location in eukaryotic cells.

Which of the following situations would best promote the release of oxygen from hemoglobin:

What is the role of O2 in cellular respiration?