Intro to topic 3

Cell Division – one cell divides to make 2 new daughter cells

chromosome threadlike structure within the nucleus containing the genetic information that is passed from one generation of cells to the next

chromatid one of two identical “sister” parts of a duplicated chromosome

centromere area where the chromatids of a chromosome are attached

centriole one of two tiny structures located in the cytoplasm of animal cells near the nuclear envelope, aids in cell division

cell cycle series of events that cells go through as they grow and divide Cyclin one of a family of closely related proteins that regulate the cell cycle in eukaryotic cells

spindle fanlike microtubule structure that helps separate the chromosomes during mitosis spindle centrioles

mitosis part of eukaryotic cell division during which the cell nucleus divides

interphase period of the cell cycle between cell divisions

prophase first and longest phase of mitosis, during which the chromosomes become visible and the centrioles separate and take up positions on the opposite sides of the nucleus centriole spindle nucleus chromosomes

metaphase second phase of mitosis, during which the chromosomes line up across the center of the cell spindle chromosomes

anaphase the third phase of mitosis, during which the chromosome pairs separate and move toward opposite poles chromosomes

telophase fourth and final phase of mitosis, during which the chromosomes begin to disperse into a tangle of dense material

cytokinesis division of the cytoplasm during cell division Animal Cell

Plant cell Mitosis Cytokinesis Cell plate formation

Homework: Do crossword puzzle, and study for vocabulary quiz tomorrow