Cell division and_mitosisprinte98_102 (1)

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Information about Cell division and_mitosisprinte98_102 (1)
Health & Medicine

Published on March 20, 2014

Author: rosepetal44

Source: slideshare.net

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Cell Division and Mitosis Name: Please read pages 98-102 and complete the following questions or word descriptions. 1. Even after growth stops, why is cell division (mitosis) still important? In order to continue to grow, heal and build muscle cells. 2. Page 99 Do all cells divide at the same rate as each other? Give some specific examples. They can range from 20 minutes (Human Embryo Cells) to 20 hours 3. Page 99 What is a Eukaryotic cell? What does a cell do during INTERPHASE? A cell with a membrane bound nucleus. The cell will copy its chromosomes, grow in size and prepare to split. 4. Page 99 Why is it important for a cell to reproduce it HEREDITARY MATERIAL? So that each of the two new cells will get a copy of the genetics to complete the cell’s life functions. 5. Page 99 What happens after interphase? The cell is now ready to divide and is ready for mitosis (PMAT) 6. Define MITOSIS Page 100 - Process by which the nucleus divides to form two identical nuclei. To make two cells that are exactly the same. 7. Page 100 Describe each of the following PHASES OF MITOSIS! A) PROPHASE- The nuclear membrane disintegrates. And the Centrioles (fishing reel) move to the poles. Threadlike Spindle fibers begin to stretch across the cell. ***Plant cells don’t have centrioles*** B) METAPHASE-the pair of chromatids line up in the center. Centromere- The structure that holds the chromatids together. C) ANAPHASE-Chromatids separate and move to the opposite ends of the cell. The chromatids are reeled in by the CENTRIOLES that are attached to the spindle fibers. D) TELOPHASE- Chromosomes uncoil and a new nucleus develops. The cell will then enter into INTERPHASE 8. Compare the splitting of the cytoplasm in PLANTS vs. ANIMAL CELLS. Plants have a cell plate that breaks the cytoplasm. It completes the division of the plant cell. A new membrane and cell wall develop along the cell plate!

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