2.  What is the most basic unit of living organism?  CELL

3.  ALL organisms are composed of 1 or more cells.  All cells come from pre-existing cells through cell division

4.  Cell division allows for all living things to make more cells.  Making more cells can help in body repair itself, allow an organism to grow, develop, and even reproduce.

5.  Cells DO NOT work if they are too big or too small – they need to be JUST THE RIGHT SIZE  Once cells reach a certain size, they must divide in order to continue to function

6.  Cell Cycle = sequence of growth and division of cell  1. Interphase  2. Cell Division ▪ A. Mitosis ▪ B. Cytokinesis

7.  Which part of the cell cycle is the longest?  Interphase  What are the different phases to this part of the cell cycle?  G1, S, G2

8.  DNA: Our genetic material (ex: color of hair)  Chromatin: loose DNA, looks like pasta  Chromosome: chromatids condensed together which carry genetic information and begin to form cell structures.  Sister Chromatid: Identical halves of the original cell (parent cell)  Centromere: Holds sister chromatids together; plays a role in chromosome movement during mitosis  Spindle Fibers: Cell structures that pulls apart sister chromatids

9. Is a process in which body (somatic) cells divide to create new ones.

10.  You will work with a partner (person sitting next to you)  I NEED TO SEE TWO DIFFERENT HANDWRITING ON EACH POSTER!!!  RULE: Both partners’ hands must be on the poster at all times. PENALTY: -1 point every time one of the partner has their hand off the poster

11.  1. Label and divide your poster like the diagram  2. Use pages 204-209  3. Include a drawing of how chromosomes look in each PHASE OF MITOSIS ONLY  4. Follow the directions carefully on your direction sheet 1.Interphase OR Cell Cycle 2. Prophase3. Metaphase 4. Anaphase5. Telophase6. Cytokinesis

12.  DNA in the nucleus condenses/compacted and forms chromosomes. Each chromosome is copied (doubled). 2n nucleus DNA Chromosomes

13.  Interphase has 3 main parts:  G1 – Cells grow and makes proteins  S – Chromosomes containing DNA are replicated (copied)  G2 – Cell prepares for division

14. During this stage the chromosomes copies come together (sister chromatids),so that equal amounts of genetic information get transferred to the new cell, and the nuclear membrane disappears.

15.  During this stage, chromosomes line-up in the middle and prepare to split equally  Spindle Fibers Attach to the chromosomes in this stage

16.  At this stage, chromosomes are split by spindle fibers and move away to opposite sides of the cell.

17.  Chromosomes approach the opposite ends of the cell and group together.  New nuclear membranes form and two identical cells are made. Cells are DIPLOID (2n)  DIPLOID: Contains 100% of the original DNA. 2n

18. Purple Monkeys Attacking Tokyo

19. P = Prepare M = Middle A = Away T = Hand motion

20.  Division of the cytoplasm Cleavage (pinch) Cell Plate (New Wall) in animal cell in plant cell

21. Is a growth that happens because of uncontrolled cell division. These changes are caused because of damage to genes in DNA. Cancer can be both genetic, or caused by the environment.