PPT-Lesson 1: How does cell division affect growth?

Chapter 4 Animal Growth and Heredity Vocabulary Life cycle the stages that a living thing passes through as it grows and changes Mitosis the process by which most cells divide Chromosome A threadlike structure in the nucleus made up of DNA. Amit. . Tzur. , Ran . Kafri. , Valerie S. . LeBleu. , . Galit. . Lahav. , Marc W. . Kirschner. Presented by: Amber Lin & Kevin . Hu. Introduction. Models of Cell growth:. Size Dependence. Time Dependence. Mitosis. History . of Understanding Cancer. Rudolf Virchow (1821-1902) – First to recognize leukemia in mid-1800s, believing that diseased tissue was caused by a breakdown within the cell and not from an invasion of foreign organisms.. 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:. to the cell theory: all cells come from preexisting cells. . Why, when and how . cells divide is the subject of this unit..  . Reproduction. Cells reproduce in order to make new cells.. A bacterium divides to become two bacteria.. 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. Chapter 10. In Your Notebook. Materials move through cells by diffusion. Oxygen and food move . into cells. , while waste products move out of cells. How does the size of . a cell . affect how . efficiently . 1. Cell Division. The ability of organisms to produce more of their own kind is the one characteristic that best . distinguishes living . things . from nonliving . matter.. Cell division . functions in . 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 Page 56. Page 56. Page 56. Comparing Cell Cycles. The table below compares the length of different cell cycles.. What Are the Functions of Cell Division?. Read the “My Planet Diary: Cycling On”…p. 56. Intro ?. Your skin cells are constantly dividing. Why?. Vocab. DNA. : genetic material. Chromosome. : Coiled DNA that is passed from one generation of cells to the next. Chromatid. : one of two identical “sister” parts of a duplicated chromosome. mitosis. results in an increase in number of . identical. cells for . growth and repair. .. Identify and name the stages of mitosis in diagrams and photomicrographs.. Describe the . cell cycle. and relate it to an understanding of . Mitosis PAG 1.1. Foundations in Biology. spec. Mitosis and Cell Cycle. Learning Objectives. - Collection and presentation of data:. • Produce a root tip squash;. • Use a light microscope to produce annotated drawings of the stages of mitosis.. 1. Cell division. Mitosis. Cell division functions in reproduction, growth, and repair. In unicellular organisms, the division of one cell to form two reproduces . an entire . organism (e.g., bacteria, yeast, .