Mitosis - Kaden Perez

Aim: How can we describe mitosis and its phases? Do Now: If a cell is growing, why does it need to divide? I. Mitosis -The process by which a cell separates the chromosomes in its nucleus into two identical sets in two nuclei.  Parent cell is identical to the 2 daughter cells....

Aim: How can we describe mitosis and its phases? Do Now: If a cell is growing, why does it need to divide? I. Mitosis -The process by which a cell separates the chromosomes in its nucleus into two identical sets in two nuclei.  Parent cell is identical to the 2 daughter cells. 46 chromosomes 46 chromosomes 2n 2n Makes all types of cells except sex cells A. Phases 1. Interphase a. Chromosome replicates. 2. Prophase a. Fibers radiate from opposite poles called spindle. b. Nuclear membrane disappears. 3. Metaphase a. Chromatids move to central plate (middle) b. Chromatids allign in the center. 4. Anaphase a. Separate and pull chromatids apart. b. Moves toward the poles. 5. Telophase a. Nuclear membrane reappears forming two nuclei. b. Cytoplasm splits (cytokinesis). c. The pinching in is known as the cleavage furrow.  II. Differences between plant and animal cells A. Centrioles only in animals help the formation of spindle fibers. B. Cell Plate only in plant cell helps divide the plant during telophase.  Q. Which process is represented by the series of diagrams? 1. gametogenesis 2. fertilization 3. mitotic cell division Ans. 3 4. meiotic cell division  Q. If an organism reproduces asexually, its offspring will most likely be 1. genetically different from each other 2. produced from specialized cells known as gametes 3. genetically identical to the parent 4. produced as a result of fertilization Ans. 3  Q. Normal mitotic cell division results in each daughter cell having 1. half the number of chromosomes as the parent cell 2. the same number and kinds of chromosomes as the parent cell 3. the same number but different kinds of chromosomes as the parent cell 4. twice the number of chromosomes as the parent cell Ans. 2  Q. The chromatids of a double-stranded chromosome are held together at a region known as the 1. polar body 2. centromere 3. centriole 4. Golgi complex Ans. 2