Mitosis How eukaryotic cells reproduce • Before mitosis • The cell grows and copies its organelles and DNA (chromosomes) • After chromosomes are duplicated, copies are called chromatids and are held together at the centromere • During mitosis • Chromosomes condense into straight lines • Nuclear membrane dissolves • Paired chromatids line up in the middle of the cell • Chromatids separate and move to opposite sides of the cell • Nuclear membrane reforms around the new sets of chromosomes • Chromosomes unwind • After mitosis • The cytoplasm splits in two – In animal cells, the cell membrane pinches – In plant cells, a cell plate forms • The cell cycle in complete. These two new cells are identical to each other and the original cell, and they are at the beginning of their cell cycle. Video 1. Which of the following is the correct definition of mitosis? a. b. c. d. How prokaryotic cells reproduce How eukaryotic cells reproduce How all cells reproduce How people reproduce 2. Which of the following is not true for cytokinesis? a. b. c. d. It happens after mitosis The cytoplasm splits in two The cell cycle is complete The two new cells are different from each other and the original cell 3. Which phase of mitosis does this picture represent? a. b. c. d. Prophase Anaphase Metaphase Telophase 4. Which phase of the mitosis does this picture represent? a. b. c. d. Prophase Anaphase Metaphase Telophase 5. Which of the following happens during Anaphase? a. Chromosomes condense into straight lines b. The nuclear membrane dissolves c. Chromatids separate and move to opposite sides of the cell d. The nuclear membrane reforms 1. Which of the following is the correct definition of mitosis? b. How eukaryotic cells reproduce 2. Which of the following is not true for cytokinesis? d. The two new cells are different from each other and the original cell 3. Which phase of mitosis does this picture represent? a. Prophase 4. Which phase of the mitosis does this picture represent? c. Metaphase 5. Which of the following happens during Anaphase? c. Chromatids separate and move to opposite sides of the cell