PPT-Reproduction and Cell Division

Modern cell theory Keep in mind that All living things are made up of one or more cells The cell is the basic unit of life All cells come from preexisting cells Just as cells reproduce as part of the Cell Cycle living organisms reproduce as part of the life cycle. Chapter 8. Asexual vs. Sexual reproduction. Asexual reproduction – new organisms/cells are genetically identical to parent cells/organisms . Sexual reproduction – offspring have a combination of genes from both parents. . EQ: How do cells divide? . Cell Division . —. . process by which . a cell divides into 2 new cells. Why do cells need to divide? . Living things grow by producing more cells, NOT because each cell increases in size. A Powerpoint Presentation by: . Jameson McNamee. Isabelle Call. Jazlynn Bohlen. Looks. Though the Euglena isn't the prettiest creature out there but hey it’s a single celled organism that you can only see under a microscope what do . All organisms come from one cell. Largest: Ostrich Egg. Smallest: Red Blood Cell. Longest: Nerve Cell . Where do cells come from?. Another cell: . Asexual Reproduction. Exact copy of the cell. A combination of cells:. Cell division creates duplicate offspring in unicellular organisms (Asexual Reproduction). Provides for growth, development, and repair in multicellular organisms (Sexual Reproduction). The cell cycle extends from the creation of a new cell by the division of its parent cell to its own division into two cells. How did I grow taller. ?. . How . are my worn out cells replaced. ? . How . do I heal from injuries. ?. The answer is….. Cellular Reproduction . or Mitosis. THE . CELL CYCLE:. Cells go through cycles during their lifetime.. Chapter 10. Limits to Cell Size. Cells grow as the organism grows.. However cells only grow to a certain extent then divide. Why?. . - The larger the cell the more demands on its . dna. . - a large cell has more trouble moving food in and waste out. Figure 12.1b The functions of cell division: Growth and development. Figure 12.1c The functions of cell division: Tissue renewal. Figure 12.2 Eukaryotic chomosomes. Figure 19.0 Chromatin in a developing salamander ovum. Euglenophyta. , . Bacillariophyta. , and . Dinoflagellata. consist entirely of unicellular forms. . Other Divisions, especially the . Phaeophyta. and . Rhodophyta. consist almost entirely of . multicellular. How do little elephants grow up to be BIG elephants?. Why do animals shed their skin?. Cell Division. Cell division. : increases the number of . cells. and causes many-celled organisms to grow.. The new cells that are formed are called: . What is reproduction. ?. Anticipatory Set. Please meet:. Petero. (from Uganda). a. nd. Kenadie. !!!. What do they have in common??. Crouzon. Syndrome. genetic disorder, skull bones fuse, 1-25,000 are affected. 1 x All cells are formed by division of pre - existing cells x Each new individual begins its life as a new single cell commonly the fertilized egg or zygote x A large number of cells are being t To be able to explain Sexual Reproduction. To be able to give advantages and disadvantages for each. R. eproduction. Why does reproduction exist?. What is reproduction?. . Sexual. reproduction involves . Zygnemaceae. . 2- Family: . Desmidiaceae. . 1-. . Family . Zygnemaceae. comprising several thousand different. . species. . in . genera. such as . Zygnema.