Presentation on theme: "Cell Division page 95 Define Cell Cycle--- the regular sequence of growth and division happens again and again---cycle allows you to grow and repair your."— Presentation transcript:
Cell Division page 95 Define Cell Cycle--- the regular sequence of growth and division happens again and again---cycle allows you to grow and repair your body during the cell cycle the cell grows, prepare for division and divides into 2 new cells What are the new cells called after cell division? Daughter Cells Sorry guys---NO SON CELLS List the 3 main stages of the Cell Cycle Interphase --- Mitosis --- Cytokinesis What happens during Interphase? Cell Grows---grows to full size, produces structures It needs Cell makes exact copy of DNA in its nucleus--- each new cell must have a complete set of DNA to survive.
What is replication? the process in which the cell makes an exact copy of the DNA in its nucleus What are the 4 phases of mitosis. Explain what happens in each phase. MitosisMitosis: Animal Plant cell mitosis | Flash simulation, Animation, Illustration, Picture, Diagram - eduMedia
Chromosomes----draw one and explain its function. Double rod structure that has two identical strands of DNA held together by a centromere. Gene with DNA found here. --made of many genes joined together like beads on a string --humans have approximately 35,000 genes What is cytokinesis? Final step in the cell cycle. Cytoplasm divides---organelles evenly distributed--- two new daughter cells form---identical to parent Single Duplicated Chromatid Connected by centromere
Draw cytokenesis in plant and animal cells. Tell how it is different. In animals cytoplasm pinches together in middle and pulls apart forming two identical cells In plants the cell wall cannot squeeze--- a cell plate forms across the middle of the cell separating the genetic material and organelles---new cell membrane forms---new cell wall forms What type of reproduction is mitosis? ASEXUAL How is this different from sexual reproduction? One Parent---Asexual Two Parents---Sexual
How many chromosomes are in your body or somatic cells? 23 pairs or 46 chromosomes Cells with pairs of chromosomes are called Diploid Cells that do no have pairs of chromosomes are Haploid cells. Haploid cells are called--- SEX cells (Gametes) Name the haploid cells in your body. Sperm or Egg Mutation: Change in a gene or chromosome Which type of reproduction passes on identical genetic materials? Asexual Reproduction Which type of reproduction scrambles the genetic materials? Sexual Reproduction