4. Which statement about telomeres is incorrect? A) Telomeres are repetitive nucleotide sequences at the end of a chromatid B) Telomeres serve as protective caps that chromosome from deterioration during cell division C) Telomeres are gradually consumed during repeated prevent the cell divisions D) In cancer cells, telomerase activity is usually re- duced compared with normal cells

7) I have identified a new bacterial species that I can culture in the lab. These bacteria have a unique flagellum (tail used for swimming). I would like to determine if this species has any novel genes involved in flagella development or flagella movement.  What type of genetic screen would you perform and describe how you would carry out the genetic screen to identify genes involved in flagella development or movement. Be sure to include the phenotype(s) you would be looking for in your screen.

The nucleosome core particle: a) contains about 145 based of DNA b) contains 6 histone proteins  c) contains histone H1 d) none of the above

What statement about Cdks/Cyclins below is false? A) Cyclins phosphorylate Cdks B) Cdks are kinases C) Cdk expression is constant during the cell cycle D) Cyclin expression fluctuates during the cell cycle E) Cdk activity fluctuates during the cell cycle

Cyclin B and Cdk1 make up MPF which is important to the regulation and initiation of mitosis. : a) True b) False

22. With which protein(s) is a condensed eukaryotic chromosome NOT known to be associated? 1. core histones H2A, H2B, H3, and H4   2.histone H1   3.SMC proteins   4.topoisomerase I   5.topoisomerase II

3b) Briefly explain what telomerase does, how it accomplishes what it does, and why that allows a cell to completely and accurately replicate the ends of linear DNA molecules. (please note that the question does not ask you to explain the entire process of replication of the end of a linear DNA strand, it only asks about the function of telomerase in this process)

(a)Discuss or explain the consequences for a cell if the chromatin could not be remodeled.  (b) Does the action of the telemorase enzyme contradict the central dogma of molecular biology? why or why not?