1. Phospholipid: Molecule that forms a double-layered cell membrane; consists of a glycerol‚ a phosphate group; and two fatty acids. 2. Selectively permeable (Semi): Condition or quality of allowing some‚ but not all‚ materials cross a barrier or membrane. 3. Receptor: Protein that detects a signal molecule and performs an action in response. 4. Diffusion: Movement of dissolved molecules in a fluid or gas from a region of higher concentration to a region of lower concentration. 5. Osmosis: Diffusion
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are allowed outside the city. Match the parts of Leeuwenhoek (they’re italicized and underlined) with the parts of a real cell. Briefly describe each part/organelle’s function. 1. Mitochondria 2. Ribosomes 3. Nucleus 4. Endoplasmic Reticulum 5. Golgi Apparatus 6. Protein 7. Cell Membrane 8. Lysosomes 9. Nucleolus We want to be creative in Biology (and‚ of course‚ to learn about cells!). Demonstrate your own understanding of Leeuwenhoek (the cell city) and
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Name__________________________________Mod_______Date_____________ Cell WEBQUEST: An interactive journey into the cell! Answer the following questions. You do not have to answer these questions in complete sentences‚ but your answers should be complete with details and information! Go to: http://askabiologist.asu.edu/research/buildingblocks/cellparts.html 1a) How many different kinds of cells are in your body? ________________ 1b) Why do you suppose there are so many different types of cells
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Which intracellular organelles have membranes as part of their structure? How would the breakdown of the membranes of these structures affect the function of josephs heart cells? * Lysosome * Mitochondrion * Golgi Complex * Endoplasmic Reticulum * Nucleus * Plasma Membrane The breakdown of the Plasma
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compartmentalized into individual organelles B. Major organelles and other structural features include: * Appendages (cilia and flagella) * Glycocalyx * Cell wall * Cytoplasmic or cell membrane * Organelles (nucleus‚ nucleolus‚ endoplasmic reticulum‚ Golgi complex‚ mitochondria and chloroplasts) * Ribosomes
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Vocabulary Chapter 4 1. adhesive junctions- tissues that link together cells 2. basal body- An eukaryotic cell organelle that consists of a 9 + 0 arrangement of microtubule triplets; could be the organization of a microtubule assembly of a cilium or flagellum; its structure is completely identical to that of a centriole 3. capsule- surrounding the cell walls of some bacteria is a sticky layer that protects the cell surface and sometimes helps in gluing cells to surfaces 4. cell junctions- A
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The cell functions much in the way a city does. Although it may be an old analogy‚ it may be one of the best. Following is a list of cell parts and how their function is similar to functions of a city or town. The cell membrane is the city limits of our city. Outside of the city limits‚ the local government has no jurisdiction‚ but inside those limits‚ people are subject to the “laws of the land”. The nucleus – This is the place where direction is given and DNA is sent from. This would
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The analogy that I chose to do is prison. The reason that I chose prison is because I felt that the cell I was doing could relate to it the most. The cell that I decided to do was the plant cell because it relates to the prison in many ways. The reasons the organelles in the plant cell relate the most is because the plant cell needs to have a lot of protection just like the prison does. The first organelle in the cell that relates to the prison is the Cell Membrane. This relates to the prison because
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Tight junctions (TJs) are occluding junctions which act as barriers that control paracellular permeability and regulate trans-epithelial water and solute movement. The structures are composed of integral transmembrane proteins that link adjacent cells‚ with an effect on cell-cell adhesion and epithelial permeability. It also works as a boundary between the apical and basolateral plasma membrane domains to create the polarisation of endothelial and epithelial cells. These junctions are comprised of
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Within the mitochondria CHOL is converted to pregnenolone (PREG) by the side-chain cleavage enzyme known as CYP11A1. The conversion to PREG is the rate-limiting step and the following intermediate steps are taken place in the smooth endoplasmatic reticulum . PREG is either converted to 17α-hydroxypregnenolone (OH PREG) by the 17α-hydroxylase activity of CYP17A1 or converted to progesterone (PROG) by the enzyme 3β-hydroxysteroid dehydrogenase (3β-HSD). PROG is further converted to 17α-hydroxyprogesterone
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