______The Sister Chromatids Are Moving Apart

1. ______The sister chromatids are moving apart.
2. ______The cytoplasm of the cell is being divided
3. ______Chromatids line up along the equator
4. ______What is the name of the structure that connects the two chromatids?
5. ______Nucleolus reappears, nuclear membrane reforms and the spindle breaks down.
6. ______is found in animal cells, and is thought to produce the spindle fibers that help separate the sister chromatids during anaphase.
7. ______is the period of time from the beginning of one cell division to the beginning of the next.
8. ______is a form of cell division that only occurs in Eukaryotic cells.
9. ______one of two duplicated chromosomes
10. ______nucleolus disappears, nuclear membrane breaks down & spindle forms.
11. ______Cell grows, protein synthesis & cellular respiration occurs, DNA is replicated
12. ______fan like structure that separate chromatids during Anaphase.

1. What are the 2 reasons why cells divide? ______
2. What is the protein that controls the timing of the cell cycle? ______
3. What is the disorder that occurs when the cells are unable control the cell cycle? ______
4. List the causes of this disorder ______
5. List the treatments of this disorder ______

Name: ______Date: ______Per. _____

Matching- There may bemore than 1 correct answer for each question; howevereach choice is only used 1 time!

______1. DNA wrapped in protein; humans have 46A. Avery

______2. Disease-causingB. bacteriophage

______3. Scientist that took x-ray of DNA that helped in the discovery of DNA’s structureC. Chargaff

______4. Showed that bacteria were able to transformD. Chase

______5. Biomolecule group to which DNA belongsE. chromosome

______6. Scientist that chemically proved base-pairing only occurred between certain nitrogen basesF. covalent

______7. Five-carbon sugar found in DNAG. Crick

______8. Identified “transforming substances” seen in bacteria as DNAH. deoxyribose

______9. Monomers of DNAI. double helix

______10. Used viruses to prove DNA, not protein, contains the genetic codeJ. Franklin

______11. Credited with the first identified structure of DNAK. Griffith

______12. Virus that infects bacteriaL. Hershey

______13. The ability of bacteria to take up DNA from their environmentM. Hydrogen

______14. Type of bond found between nitrogen basesN. nucleic acid

______15. Type of bond that holds components of nucleotides togetherO. nucleotide

______16. Structure of DNAP. pathogenic

Q. transformation

Base-Pairing- Use base pairing rules to find the complementary strand of DNAR. Watson

DNA Replication- Place the following in the correct order:

1. Free nucleotides in the nucleus join with the correct bases.
2. 2 new molecules of DNA (each contain an original & a new strand) become twisted and take the form of a Double Helix
3. Each ½ serves as a pattern for the formation of a new DNA chain.
4. Double helix untwists, enzyme “Helocase” breaks the H bonds, 2 nucleotide chains begin to separate like a zipper.
5. The 2 new DNA molecules are now called “Sister Chromatids” and remain stuck together until the cell divides.

1. ____2. ____3. _____4. ______5. ______