1 / 3

Q4. Nucleosome is the basic unit of chromatin structure, please describe

kareem
Download Presentation

Q4. Nucleosome is the basic unit of chromatin structure, please describe

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Q1. Prokaryotic cell E. coli consists of a single closed-circular DNA molecule of 4.6 x 106 bp long. This DNA molecule would be 1.6 mm if the double helix is relaxed. Please describe what strategies does E. coli use to pack such a long molecules into its nucleoid less than a micrometer (mm) in diameter. (20 points) Q2. Please list at least two different types of proteins included in E. coli nucleoid, and describe the biological function of these proteins. (10points) Q3. Chromatin is the highly ordered DNA-protein complex which makes up the eukayotic chromosomes. Please describe the biological importance of chromatin structure . (20 points)

  2. Q4. Nucleosome is the basic unit of chromatin structure, please describe • the structure/composition of nucleosome • the enzyme and experiment that were used in the 1970s to uncover such a fact. (20 points) • Q5. (1) Is all DNA sequence in euchromatin transcriptionally active? • (2) which enzyme can be used to determine the transcriptionally active DNA regions, and how? • (3) By what means does the cell maintain the transcriptioanlly active DNA regions be free of extensive chromosomal packing. (20 points)

  3. Q6: please match the names describing the structure of a mitotic chromosome (write down the name please) (10 points) • Centromere • Telomere • Kinetochore • Microtubles • chromatid A B C E D

More Related