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cell

Chapter 1 Powerpoint

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Chapter 1 Exploring Life Overview: Biology?s Most Exciting Era Biology Is the scientific study of life The phenomenon we call life Defies a simple, one-sentence definition Figure 1.1 We recognize life By what living things do Some properties of life Figure 1.2 (c) Response to the environment (a) Order (d) Regulation (g) Reproduction (f) Growth and development (b) Evolutionary adaptation (e) Energy processing Concept 1.1: Biologists explore life from the microscopic to the global scale The study of life Extends from the microscope scale of molecules and cells to the global scale of the entire living planet A Hierarchy of Biological Organization The hierarchy of life Extends through many levels of biological organization

Cell and Transport Study Guide

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Cells & Transport Study Guide Cell Theory 1) All living things are made up of cells 2) Cells are the basic units of structure and function in an organism 3) New cells are produced from existing cells Scientists: 1665 Robert Hooke Coined word ?cell? Looked at cork under microscope 1674 Anton van Leeuwenhoek Perfected the simple microscope Discovered protozoa 1838 Matthias Schleiden Discovered/published fact that all plants are made of cells 1839 Theodor Schwann Discovered/published fact that all animals are made of cells 1855 Rudolf Virchow Discovered/published fact that all cells come from preexisting cells 1931 Janet Plowe Demonstrated that a cell is a physical structure 1970 Lynne Margulis Created endosymbiotic theory Endosymbiotic Theory

Intro to Evolution and Evolutionary Genetics: Exam Study Notes

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Evolution and the Themes of Biology Identify global challenges that may require a biological solution. pollution acid rain / ocean acidification antibiotic-resistant pathogens Describe how an organism?s environmental adaptations result from evolution. individuals best suited to their environment are more likely to survive and reproduce more individuals will have these advantageous traits in subsequent generations (if they are heritable) Identify (and give examples) of the different levels of the hierarchy of biology. Domain: Eukarya Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Carnivora Family: Ursidae Genus: Ursus Species: Ursus Maritimus Describe how the food competition hypothesis (in the context of giraffes? long necks) was not supported by data.

AP BIO CHP 6 CAMPBELL BIOLOGY 9e

A Tour of the Cell

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Ch. 7 Tour of the Cell 2007-2008 Light Microscope - LM ? Uses visible light ? inexpensive ? live or dead objects ? Resolution: ? As magnification ?, resolution ?. ? ~1000X. ? Limitations: ? many cell structures too small Just magnified 64X Magnification & Resolution Light Microscope Variations ? Unstained ? Stained: ?Methylene blue ? iodine Light Microscope Variations ? Fluorescence: uses dyes to make parts of cells ?glow?. ? Phase-contrast: enhances contrasts in density. ? Confocal: uses lasers and special optics to focus only narrow slides of cells. Electron Microscopes ? Use beams of e- ? Invented in 1939 ? Advantages: ?Much higher mag. ? 50,000X ? Disadvantages: ? Vacuum.

AP Bio Review

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AP BIOLOGY SEMESTER 1 EXAM REVIEW UNIT 1: MECHANISMS OF EVOLUTION Darwinian Evolution Evidence Paleontology, biogeography, embryology, comparative anatomy, homologous structures, analogous structures, vestigial structures, molecular biology, artificial selection Natural Selection Over-production of offspring, inherited variation, competition, adaptations, fitness, reproductive success of advantageous traits Stabilizing selection (human birth weight, extremes selected against - too small won?t survive, too big difficult birth), directional selection (pesticide resistance, peppered moth), disruptive selective (opposite of stabilizing), sexual selection (male competition, female choice)

Parts of A Cell

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Cell Organelle Research Websites Cells Alive http://www.cellsalive.com/cells/cell_model.htm Tour through plant and animal cell. Click on each organelle for structure and function The Virtual Cell http://www.ibiblio.org/virtualcell/tour/cell/cell.htm The Virtual Cell is an online Cell Biology textbook. It provides students with an interactive journey through the cell. Animal Cell Interactive http://www.wisc-online.com/objects/ViewObject.aspx?ID=AP11403 Explore parts of an animal cell Interactive quiz Cell Structure and Parts http://www.wiley.com/legacy/college/boyer/0470003790/animations/cell_structure/cell_structure.htm Compare Prokaryotic, Animal and Plant cell parts

A Tour of the Cell

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Ch. 7 Tour of the Cell 2007-2008 Light Microscope - LM ? Uses visible light ? inexpensive ? live or dead objects ? Resolution: ? As magnification ?, resolution ?. ? ~1000X. ? Limitations: ? many cell structures too small Just magnified 64X Magnification & Resolution Light Microscope Variations ? Unstained ? Stained: ?Methylene blue ? iodine Light Microscope Variations ? Fluorescence: uses dyes to make parts of cells ?glow?. ? Phase-contrast: enhances contrasts in density. ? Confocal: uses lasers and special optics to focus only narrow slides of cells. Electron Microscopes ? Use beams of e- ? Invented in 1939 ? Advantages: ?Much higher mag. ? 50,000X ? Disadvantages: ? Vacuum.

AP Bio Review

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AP BIOLOGY SEMESTER 1 EXAM REVIEW UNIT 1: MECHANISMS OF EVOLUTION Darwinian Evolution Evidence Paleontology, biogeography, embryology, comparative anatomy, homologous structures, analogous structures, vestigial structures, molecular biology, artificial selection Natural Selection Over-production of offspring, inherited variation, competition, adaptations, fitness, reproductive success of advantageous traits Stabilizing selection (human birth weight, extremes selected against - too small won?t survive, too big difficult birth), directional selection (pesticide resistance, peppered moth), disruptive selective (opposite of stabilizing), sexual selection (male competition, female choice)

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