Cell+Division+EP

18.1 INCLUDE AN IMAGE THAT SHOWS THE CELL CYCLE 1. What are the three stages of interphase. Describe each phase. 2. How does interphase prepare a cell for cell division? 3. Define: mitosis, sister chromatids, centromere, cytokinesis, apoptosis 18.2 INCLUDE LABELED IMAGES OF THE PHASES OF MITOSIS 4. Following mitosis, how does the chromosome number of the daughter cell compare with the chromosome number of the parent cell? 5. What are the phases of mitosis and what happens during each phase? 6. How is the cytoplasm divided between the daughter cells following mitosis? 7. Define: parent cell, daughter cell, diploid, centrosome, mitotic spindle, centrioles. 8. What is the importance of mitosis and how is the process controlled?
 * G1 stage is when a cell doubles its organelles and gets all the materials it needs for DNA synthesis.
 * S stage DNA replicates and a copy of the DNA in the cell.
 * G2 stage is when the cell synthesizes the proteins needed for cell division.
 * it gets it ready for mitosis of duplication division and cytokinesis and in the cytoplasm..
 * mitosis duplication division.
 * sister chromatids- dividing cells each chromosome is composed of two identical parts.
 * centromere- chromatids are held together.
 * cytokinesis- division of the cytoplasm.
 * apoptosis- programmed cell death.
 * the main cell is called the parent cell and then once it divides it is called the daughter cells which means they have the same amount and the same kind of chromosomes.
 * Prophase- where the cell is preparing itself to divide. the centrosomes outside the nucleus have duplicated and began moving away form each other.[[image:prophase.gif]]
 * Metaphase- the nuclear envelope is fragmented and the spindle occupied by the nucleus. a fully formed spindle.
 * [[image:metaphase1m.jpg]]
 * anaphase- the centrosomes uniting the chromatids divide. the sister chromatid separates and moves toward opposite sides. this makes sure that each cell receives a copy of each chromosome and therefore has full genes. [[image:anaphase1m.jpg]]
 * telophase- the spindle disappears and each cell gets the DNA
 * [[image:telophase1m.jpg]]
 * it is divided by cytokinesis so that the cytoplasm and organelles are divided.
 * parent cell-the cell that divides.
 * daughter cell- the new cells from the dividing cell.
 * diploid- the complete number of chromosomes.
 * centrosome- the microtubule organizing center of the cell.
 * mitotic spindle- where they assemble
 * it helps make us grow. mitosis helps with the making of new cells which means if someone were to get hurt then cells would be made to repair that wound.