PPT-Chapter 9: Cell Cycle and Cell Reproduction

Why do cells need to divide Growth and development You started as 1 cell and now youre made up of roughly 40 TRILLION cells Repair and regeneration of tissue Reproduction What happens when cells divide . 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. AP Biology Exam Review. Apoptosis = cell suicide. Cell is dismantled and digested. Triggered by signals that activate cascade of . “. suicide. ”. proteins (caspase). Protect neighboring cells from damage. Unicellular organism- cell division reproduces . an entire . organism. Multicellular. organisms- cell . division . can . produce . growth or progeny. Cell . division functions in reproduction, growth, and repair. Chapter . 11 (p. 206-213) . Chapter . 12 (p.228-243). Chapter . 18.3 (p.373-377). G. 1. checkpoint. G. 1. G. 2. G. 2. checkpoint. M checkpoint. M. S. Control. system. Figure 12.15. External Regulators. You Must Know. Ways that the cell cycle is regulated.. Ways in which the normal cell cycle is disrupted to cause cancer. . Concept 9.3: The eukaryotic cell cycle is regulated by a molecular control system. 7.1 Objectives. Describe the debate surrounding spontaneous generation and how . Redi’s. and Pasteur’s experiments ended that debate.. Sequence the events of the cell cycle in which new body cells are produced.. 1. a. Review Identify two reasons why a cell’s growth is limited.. DNA can’t keep up with growth. Plasma membrane doesn’t grow at same rate of volume and cannot provide enough food for cell or get enough waste out of cell.. Ms. McCabe. Do Now Cells Quiz 20 Points. Skipping lines, number 1-10. Name, Date, Period. The title is: . Cell Quiz. Answer 1-5 in complete sentences. For 6-10, write the word . and. the matching definition. Why do cells need to divide?. As . cells grow larger, they start to face several . difficulties . in functioning:. Growth & Repair. In order for multi-cellular organisms to grow, cells must divide. If cells are lost due to injury or damage to DNA, . Cell Cycle - a cycle of growth, development, and division. This is how organisms grow, produce new cells, and replace old cells. The cell cycle occurs in 2 phases: Interphase and . Mitosis. The Cell Cycle: Interphase. 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 Steps of Cell Division – Asexual Reproduction & . Mitosis. Interphase (not a step in mitosis).  . DNA looks like chromatin (squiggly). .  . DNA copies and the cell grows.. Prophase (Packs).  . General Biology. Name. ________KEY_______________________. Reproduction. All Cells come from other cells (. Remember the cell theory?. ). Asexual – Organisms formed by only one parent; offspring are identical; fast; fine for environments that don’t change frequently since each organism is a clone. It is the growth and division of single cell into daughter cells and duplication (replication).. In . prokaryotic cells, . the cell cycle occurs via process termed binary fission.. In . eukaryotic cells, .