______________________________________ Date: ________________________ Student Exploration: Cell Structure Vocabulary: cell wall‚ centriole‚ chloroplast‚ cytoplasm‚ endoplasmic reticulum‚ Golgi apparatus‚ lysosome‚ mitochondria‚ nuclear envelope‚ nucleolus‚ nucleus‚ organelle‚ plasma membrane‚ plastid‚ ribosome‚ vacuole‚ vesicle Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. What are some of the structures inside a cell that help it to live and perform its role in an organism? ____________________________________________________________
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Describe the key structures and functions of a eukaryotic and prokaryotic cell. Eukaryotic Cell (1) There are many organelles in the eukaryotic cell micrograph above. Some of these organelles are displayed in the prokaryotic micrograph and so‚ I have described the shared organelles in the prokaryotic micrograph section. Mitochondria The mitochondria cells break down nutrients which then creates energy. They act like a digestive system. This process is called cellular respiration. The
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ROD CELLS Rod cells‚ or rods‚ are photoreceptor cells in the retina of the eye that can function in less intense light than the other type of visual photoreceptor‚ cone cells. Rods are concentrated at the outer edges of the retina and are used in peripheral vision. On average‚ there are approximately 125 million rod cells in the human retina.[1] More sensitive than cone cells‚ rod cells are almost entirely responsible for night vision. STRUCTURE AND FUNCTION Rods are a little longer and leaner
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/ Beauty‚ Form and Function: An Exploration of Symmetry 1 TAN JUN RONG U1510605C 1 Writing Exercise – FePO4 Polymorphs Haines et al.‚ A neutron diffraction study of quartz-type FePO4: high-temperature behavior and α-β phase transition Z. Kristallogr. 218‚ 193-200 (2003). Paragraph 1 This writing exercise will be talking about how the structure of FePO4 will change from a low temperature of 294K to a high temperature of 1073K. There is a huge difference in both the cell parameters and atomic coordinates
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3A The Structure of Cells Monday‚ September 30‚ 2013 • Cytology ○ Cyto = cell ○ Logos = study of • Background ○ 1665 Robert Hook’s Micrographia § Was studying cork cells ○ 1833 R. Brown § Discovered nucleus ○ 1838 M. Schleiden § Said that all plants consist of cells ○ 1839 T. Schwann § All animals consist of cells ○ 1855 Virchow § Cells come only from preexisting cells • The Cell Theory ○ Cells are the structural units of all living things
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The cell wall is the tough‚ flexible but sometimes fairly rigid layer that surrounds some types of cells. It is located outside the cell membrane and provides these cells with structural support and protection. Just as the wall of the factory is for the factory. The wall also is the structure and strength. The cell membrane that separates the interior of all cells from the outside The cell membrane is selectively permeable to ions and organic molecules and controls the movement of substances
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Organelle |Function |Location | | |Cell (plasma) membrane |Composed of proteins and a bilayer of lipid. |Outermost boundary of cell (animal) | | |Holds the contents of the cell in place. | | | |Regulates the movement of materials into and out of the cell using the |
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THE MEDIA PRESENTATION Slide 1 Media of the UK consist of several different types of Communications: TV‚ radio‚ newspapers‚ magazines and websides Slide 2 TV British people watch a lot of television. They are also reported to be the the world’s most dedicated home-video users. Watching TV is the most common leasure activity for 8/10 men and women. In 2008 on average people spent 26 hours per week watching TV. People in non-manual occupation watched about 7 hours less per week than those in
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M2 needs to discuss different tissue types to achieve D2. In this essay I will include information regarding: cell differentiation‚ the functions of various cell organelles‚ tissues and a comparison of different tissue types. Cellular differentiation is the process by which a less specialised cell becomes a more specialised cell type. Differentiation happens a number of times during the development of a multicellular organism as the organism changes from a fertilised egg cell to a complex system
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Each cell can be regarded as a metabolic compartment‚ as separate place where the chemical processes of that cell occur‚ the cell is made up of different organelles each specifically designed to carry out their function‚ and this is known as a cells ultrastrucure. All cells have a cell surface membrane; these are made up of phospholipids and make up a bilayer. A phospholipid has a hydrophilic head and a hydrophobic tail which is made up of 2 fatty acid chains; these are arranged is two layers with
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