PPT-Chapter 8: Cell Reproduction

Review Organelles Centrioles Made of microtubules Acts as anchors in cell division Mitotic Spindle fibers Two Main types Kinetochore Fibers Attach from centriole to centromere of chromosomes and assists in movement of chromosomes. 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.. Why do cells need to divide?. Growth and development. You started as 1 cell and now you’re made up of roughly 40 TRILLION cells. Repair and regeneration of tissue. Reproduction. What happens when cells divide? . Life Cycle. Life Cycle. – the development of an organism from fertilization to birth, growth, reproduction, and death.. The life cycle of every organism has these 4 main stages. 1. . Birth. – the act of bringing forth offspring.. 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. 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.. Why do. cells have to divide. ?. 2 Reasons – . . 1. To grow . . 2. Replace old/damaged/dead cells. 2 Reasons – Surface area to volume ratio is an issue. What is the most important part of the cell that has to . KUmar. TYPES OF FUNGAL REPRODUCTION. Fungi reproduce by three methods:. A. Vegetative. B. Asexual. C. Sexual. New mycelium. New mycelium. New mycelium. VEGETATIVE REPRODUCTION. Inputs. Outputs. Vegetative growth. Life. Chapter 5.4 and 5.5. KEY CONCEPT. Many organisms reproduce by cell division.. Asexual reproduction. Creation of offspring from a SINGLE parent that does not involve the joining of gametes.. Binary fission is similar in function to mitosis.. B1.7.2. Friday 9. th. January 2015. All cells (excepts sperm/egg) contain . ___ chromosomes. Sperm . . . fertilises. . an egg . .  . Embryo/baby . (__ . chromosomes) . 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).  . This fusion of gametes is called fertilisation. . Sexual reproduction allows some of the genetic information from each parent to mix, producing offspring that resemble their parents, but are not identical to them. In this way, sexual reproduction leads to variety in the offspring. Animals and plants can reproduce using sexual reproduction.. Katerina . Dadakova. , Department . of. . Biochemistry. Figures. . adopted. . from. . Buchanan. et al., . Biochemistry & molecular biology of plants. Reproduction. and Senescence. 2. The. . Std XII. By Ms . Madhusrabani. . Patro. , PGT . Biology. DAV Public School, . Berhampur. Introduction. The period from birth to natural death is known . as . life span. .. It don’t .