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Chapter #2

Chapter #2. Features of Life and the Cell. Chapter 2.1 Notes. 8 features of Living Things Reproduce Sexual- 2 parents Asexual- 1 parent Grow- increase in size Develop - grow parts Need Food Herbivores- plant eaters Carnivores-meat eater Omnivores- eat both plants and animals

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Chapter #2

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  1. Chapter #2 Features of Life and the Cell

  2. Chapter 2.1 Notes 8 features of Living Things • Reproduce Sexual- 2 parents Asexual- 1 parent • Grow- increase in size • Develop- grow parts • Need Food Herbivores- plant eaters Carnivores-meat eater Omnivores- eat both plants and animals Producers- Green plants

  3. Use Energy Cellular respiration food is broken down and energy is givenoff • C6H12O6 + 6O2 6 CO2 + 6H2O Sugar + oxygen =Carbon dioxide + water • Made of cells • Respond • Are adapted to their environments

  4. 6 elements that make up 97% of living things • Oxygen • Carbon • Hydrogen • Nitrogen • Phosphorus • Sulfur

  5. The Cell Theory • 1665- Robert Hooke “Cells” • 19th Century Schleiden and Schwann came up with the cell theory. • All living things are made of cells • Cells are the basic units of structure and function • All cells come from other cells Robert Hooke

  6. Chapter 2.2 Notes Cell parts (organelles) • Cell membrane (door to cell) gives cell shape and holds the cytoplasm. Allow things in and out of the cell. • Nucleus (brain) controls cells activities. • Nuclear membrane (door to nucleus) surrounds nucleus lets things in and out of nucleus. • Golgi apparatus (packs) packages and stores chemicals. • Nucleolus- makes ribosomes. • chromosomes contains DNA information. • Cytoplasm (where chemical reactions occur) clear, jellylike material between the cell membrane and the nucleus.

  7. Endoplasmic Reticulum- ER- (roads) moves materials around cell. • Ribosomes- make protein. • Mitochondria (powerhouse) make energy. • Vacuole (storage) liquid-filled space for storage. • Centrioles (reproduction) used during reproduction. • Chloroplast- (make food) have green pigment called chlorophyll. Plants only. • Cell wall (support) thick outer covering that protects and supports plants. Plants only.

  8. 8. Animal Cell 12 cell parts 9. 10. 1.cell 7. 11.vacuole 2. 5. /chromosomes 6. / nuclear membrane 3. 4. 12.

  9. Plant Cell 14 cell parts

  10. Chapter 2.3 Notes • Diffusion- is the movement of a substance from a large (high) amount of it to where there is a small (low) amount of it.

  11. Osmosis- the diffusion of water. • The cell membrane has pores.

  12. Levels of Organization • Cell- basic unit of life • Tissue- group of cells working together. • Organ- group of tissues. • Organ system- group of organs working together. • Organism- group of organ systems working together.

  13. “Cell” March 6, 2007. http://sun.menloschool.org/~cweaver/cells/animalcell • “Living things”. March 6, 2007. http://www.edu.pe.ca/journeyon/resources_pages/lesson_plans/lesson_plans_1-3/living_things/images/living_things_000.jpg • “Food Chain”. March 6,2007. http://www.biology-resources.com/images/interdependence-of-living-things.jpg • http://www.edu365.cat/aulanet/comsoc/persones_tecniques/Robert_Hooke_archivos/Robert_Hooke.jpg • “Diffusion”. March 8, 2007. http://images.google.com/imgres?imgurl=http://epswww.unm.edu/coursinf/eps462/graphics/diffusion.gif&imgrefurl=http://epswww.unm.edu/coursinf/eps462/page4.htm&h=398&w=518&sz=17&hl=en&start=2&tbnid=1cx-DpQrcDhM0M:&tbnh=101&tbnw=131&prev=/images%3Fq%3Ddiffusion%26gbv%3D2%26svnum%3D10%26hl%3Den • “osmosis”. March 8, 2007. http://images.google.com/imgres?imgurl=http://www.biologycorner.com/resources/osmosis.jpg&imgrefurl=http://www.biologycorner.com/bio1/diffusion.html&h=425&w=605&sz=102&hl=en&start=1&tbnid=AqALyzRVcodMuM:&tbnh=95&tbnw=135&prev=/images%3Fq%3Dosmosis%26gbv%3D2%26ndsp%3D20%26svnum%3D10%26hl%3Den%26sa%3DN • “Plant Cell”. March 8, 2007. http://micro.magnet.fsu.edu/cells/plants/images/plantcell450.jpg • “Level of organization”. March 8, 2007. http://www.learner.org/channel/courses/essential/life/images/show1.levels.jpg

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