Cell Structure and Function Chapter Outline Cell theory Properties common to all cells Cell size and shape – why are cells so small? Prokaryotic cells Eukaryotic cells Organelles and structure in all eukaryotic cell Organelles in plant cells but not animal Cell junctions History of Cell Theory mid 1600s – Anton van Leeuwenhoek Improved microscope‚ observed many living cells mid 1600s – Robert Hooke Observed many cells including cork cells 1850 – Rudolf Virchow
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Cell Parts and Functions Table | Cell Organelle | Cell Function | Nucleus | Directs all cell activities "Brain or Control Center of cell" | Nuclear Envelope (Membrane) | Controls what passes in and out of the nucleus | Cytoplasm | Jelly-like substance found inside cell that acts as a medium for chemical reactions within the cell | Golgi Body (Apparatus) | Packages the proteins made by the ribosomes so they can be sent out of the cell. The UPS store of the cell | Mitochondrion | "powerhouse
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Chemistry of Life Anatomy: the study of structure or shape of body parts and their relationship to each other. Physiology: the study of function (how the parts work) Levels of structural organization: There is a hierarchy of structural complexity‚ beginning with the simplest or chemical level and culminating with the highest level-the whole organism Chemical level – atoms (and their parts)‚ and combinations of atoms called molecures Cellular level – cells are the basic structural and functional
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Lab 4: Cell Structures and the Gram Stain Purpose: The purpose of this lab is to familiarize the student with the use of a compound microscope and the Gram Stain test. Students will review a brief video and slides to introduce the compound microscope. Students will also view a video about the Gram Stain procedure and then answer questions related to it. Hypothesis If I look at the slides I will see where the cell wall is and what lies inside it and in the Gram Stain if I watch the video I will
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Week Two DQ 1 Choose one theory—spontaneous generation theory or cell theory—and select one statement that corresponds to the theory you want to refute or support: Spontaneous generation theory: Frogs come from muddy soil because they always appear in that environment. Flies come from rotten meat because they always appear where meat is rotting. Cell theory: Without the invention of the microscope‚ the cell theory would not have been possible. All living things are made up of
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DESCRIBE THE STRUCTURAL COMPARTMENTATION OF MAMMALIAN CELLS AND THE DIFFERING FUNCTIONS OF THESE COMPARTMENTS? Mammalian cells are eukaryotic this means that all of their cells have common components‚ membrane bound organelles which prokaryotic cells do not this is shown in figure 1. Organelles are purpose made to carry out a specific function that is necessary within a cell. Due to the specificity of both conditions and concentrations with in these organelles these are compartmentalized. Encasing
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Portfolio The Cell and Cell Theory [pic] The cell The word cell comes from the Latin word “cellula”‚ which means a small room. The cell is the smallest unit of a living organism‚ also known as “the building block of life”. Every living organism is consisted of a cell. There are bacteria (unicellular organisms)‚ and multicellular organisms. There are different types of cells‚ prokaryotic and eukaryotic cells. All cells come from preexisting cells. “Every cell is self-maintaining;
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have a huge impact on the communication between cells. Cell communication is a crucial process necessary for cells to carry out various functions. Drugs such as Methylenedioxymethamphetamine (MDMA)‚ known as ecstasy‚ can create barriers or confusion to cells. Cell to cell communication carry messages from signaling cells to target cells. Usually a cell will bind with a target cell through a receptor protein in the plasma membrane of the target cell
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so‚ cell phones have gotten smaller and smaller‚ as well as larger in popularity. It is difficult to go anywhere without seeing a person on a cell phone‚ or using a cell phone in some fashion. Contrary to popular belief‚ cell phones are not a "god-send" in my opinion‚ and looking at the facts‚ the world would be better off without them. As all of the following evidence shows‚ people would be safer‚ healthier and perhaps even smarter‚ without the presence of cell phones. First‚ if the cell phone
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STUDY GUIDE WITH CELL QUIZ Cell wall: Cell membrane: All cells have cell membrane Allows only essential things to come in. Double layer of lipids. Double layer=bilayer Golgi body Process and package macromolecules There is a cis end and a Trans end. Cells secrete things that have been packages from apparatus. Modify by adding carbs and phosphates. Imports substances Endoplasmic retulum Ribosome Cytoplasmic granules-small particle that floats in cytoplasm Made of ribosomal DNA and
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