Chapter 3.2 Pages Please Copy These Notes In Your Notebook!

The cell cycle includes interphase and cell division 1. normal functions of cell called interphase 2. mitosis = nuclear division 3. cells divide in minutes, hours, days or years Interphase 1. cell not dividing 2. grows to double original size 3. DNA replicates 4. organelle # increases

The cell cycle includes interphase and cell division Cell Division Phase 1. mitosis: prophase-metaphase-anaphase- telophase 2. shortest part of cell cycle 3. function: move DNA into position for division 4. each new cell gets a copy of original DNA and half the organelles 5. cytokinesis: division of the cytoplasm 6. occurs immediately after mitosis 7. daughter cells

Cell division produces two genetically identical cells 1. mitosis divides genetic material in nucleus 2. daughter cells genetically identical Steps of Mitosis 1. prophase: DNA condenses into chromosomes 2. metaphase: chromosomes line up on equator 3. anaphase: chromatids split and head to the poles 4. telophase: 2 new nuclei form; chromosomes return to chromatin form 5. then cytokinesis

Cell division produces two genetically identical cells Division of the Cytoplasm 1. animal cells form fiber ring 2. pinches off cytoplasm 3. plant cells form cell plate 4. becomes 2 new cell walls 5. 2 new daughter cells completely separated 6. enter interphase 7. cycle begins for both

Vocabulary Time cell cycle - the normal sequence of growth, maintenance, and division in a cell interphase - the period in the cell cycle in which a cell grows, maintains itself and prepares for cell division

mitosis - the phase in the cell cycle in which the nucleus divides cytokinesis - the division of a parent cell’s cytoplasm following mitosis

Make some simple sketches in your notes of the Cell Cycle! Be able to ID Interphase & Mitosis (prophase – metaphase – anaphase – telophase) & Cytokinesis