Author: Anonymous

5.  In the late 1950s, Meselson and Stahl grew bacteria in a medium containing heavy nitrogen (15N) and then transferred them to a medium containing lighter nitrogen (14N). Which of the results in figure below would be expected after one round of DNA replication in the presence of 14N?  

4. Considering the anti-parallel nature of the DNA double helix, if one strand of DNA read 5’ AATTGCCGT 3’ its complimentary DNA strand would read?  

5. Many times a single gene can affect multiple phenotypes. This is referred to as?

8.  Cytochalasin B is a chemical that interferes with Actin Microfilaments. Therefore, you would expect this chemical to interfere with which of the following cell processes?

4.  What would we call the two #12 chromosomes shown in the karyotype below? 

8. Roses exhibit incomplete dominance. If 2 pink heterozygous roses are allowed to breed, what ratio of phenotypes is expected in the offspring?

2. While observing Whitefish embryos in your virtual lab you notice that some of the cells of the embryo contained visible Chromosomes.  Because chromosomes were visible what process can you conclude was about to occur in these cells?  

6. Chromosomes first become visible and would appear like this during which phase of mitosis?  

4. If a human cell contains 92 sister chromatids at the start of mitosis, how many chromosomes will be found in each daughter cell at the completion of the cell cycle?

The following diagram represents the Light Reactions of Photosynthesis. Using choices A-E, electrons from this Photosytem I enter an electron transport chain and are used to reduce NADP+ –> NADPH. This NADPH will be used in the Calvin Cycle to reduce CO2–> Glucose.