Tuesday, March 8, 2011

3/8/11





Today we split up into to groups. There was one group that completed page 97 in the textbook. Here are the questions.



1. How long does growth phase of the cell cycle take? A. 1 hour B. 3 hours C. 8 hours D. 10 hours.



2. How much time does the cell cycle spend in interphase? A. 1 hour B. 10 hours C. 21 hours D. 22 hours



3. What is the total length of time it takes for the skin cell to complete one full cell cycle? A.10 hours B. 18 hours C.21 hours D. 22 hours



4. What phase of the cell cycle takes about 8 hours? A. DNA replication B. Mitosis C. Growth D. Preparation for cell division



5. Suppose another type of skin cell takes 44 hours to complete one cell cycle. If all of the phases are proportional to the length of time shown in the diagram, how long will the preparation for cell division phase last? A. 3 hours B. 6 hours C. 10 hours D. 20 hours



6. According to this diagram, what is the second stage in mitosis? A. Prophase B. Metaphase C. Telophase D. Cytokinesis




Then we moved to the next station and went over the worksheet labeled Examining Cell Division. Here are the answers



1. It needs to grow to get more water.



2.Chromosomes/DNA



3. You can see some cells about to split and some cells have two nuclei. Also the chromosomes are in weird shapes.



4. Results may vary.



Then we looked at different cells in an onion root slice. There were cells in it that were in each step of mitosis. Anaphase was demonstrated by Mr Finley and another student were together like best friends and then two other people pulled them apart. They had there arms out to each other saying "Besty":(. Mr Finley then called Anaphase the "Besties Stage" to help people remember. He also demonstrated Prophase by crowding a student. The student was supposed to be DNA. During Prophase, he uncrowded the student and they had room to move around.














-Noah Kudman #4

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