"Parts of cell nucleus" Essays and Research Papers

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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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    10-8-09 Biology Essay: Parts of a Cell Describe the fluid-mosaic model of a plasma membrane. Discuss the role of the membrane in the movement of materials through each of the following processes: a.) Active Transport b.) Passive Transport All living cells contain a plasma membrane‚ which acts a boundary for the cell. The plasma membrane regulates the cell’s chemical composition because it uses selective permeability to allow certain substances to enter or exit the cell more easily than others

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    The nucleus * The largest cell organelle * The nucleus houses nearly all the cell’s genetic material * It has the instructions for making proteins Part of the nucleus | function | Chromatin | * The chromatin consists of DNA and proteins. * Some of these proteins controls the activities of the cell * When cells divide‚ chromatin condenses into visible chromosomes * The chromatin shows up as dark patches when it is stained. | Nucleolus | * The nucleolus makes RNA

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    Bacteria Bacteria are microscopic organisms whose single cells have neither a membrane-enclosed nucleus nor other membrane-enclosed organelles like mitochondria and chloroplasts. Another group of microbes‚ the archaea‚ meet these criteria but are very different from the bacteria in other ways. In fact‚ there is considerable evidence that you are more closely related to the archaea than they are to the bacteria! Bacteria are living things that are neither plants nor animals‚ but belong to a group

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    Cell Biology Oct.3/14 Cell Cycle part 3: Apoptosis 2 Main ways cells will die: apoptosis is regulated‚ nacrosis is an “explosion” Apoptosis Part of controling number of cells. Importance in balance.“Programmed cell death” – important because if the cell isn’t intact you don’t want cell to divide and keep mutations going‚ to avoid inflammatory response (caused by cells that exploded/necrosis).. ect. Necrosis is triggered by something unplanned‚ leading to decrease ATP‚ pumps‚ atpase activity

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    What is a nucleus family

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    What is a nucleus family? A nuclear family is a group of parents and children living together as one. What is an extended family? An extended family Is a larger family consisting of grandparents‚ parents as well as the children. These are one of the two types of family structures in the world. I believe that a nucleus family is better of than an extended family‚ there is more stability in the family. More nucleus families have the opportunity to give their children a more luxurious life because

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    1a. What are the two major parts of the cell? The two major parts of the cell are the nucleus and the cytoplasm. 1b. How is the role of the nucleus in a cell similar to the role of the captain on a sports team? The role of the nucleus in a cell similar to the role of the captain on a sports team because nucleus is the middle part of an object or group‚ forming the basis for its activity and growth. 2a. What is the function of lysosomes? The function of lysosomes is cellular organelles that contain

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    I. Describe the structure and function of the nucleus and mitochondria. The mitochondria is a semi-autonomous organelle which reproduces by bynary fission and has its own DNA. Its main function is to produce the energy intermediate ATP‚ through ATP synthase. Mitochondria could be considered a cell inside a cell. It has its own membranes (inner and outer membranes)‚ its ribosomes (to produce the proteins encoded in its DNA)‚ a matrix -- where aerobic respiration occurs. The invaginations of the inner

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    CellsCell Division‚ and Cell Specialization Fundamentally Different Types of Cell Prokaryotic Cell- single celled: only DNA+ structure (“before nucleus”) E.g. zygote-complete DNA Eukaryotic Cell-multi-celled (“after nucleus”) Prokaryotes Eukaryotes DNA In “nucleoid” region Within membrane-bound nucleus Chromosomes Single‚ circular Multiple‚ linear Organelles None Membrane-bound organelles Size Usually smaller Usually larger- 50 times Organization Usually single-celled Often multicellular

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    Cells

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    Cells are considered the basic units of life in part because they come in discrete and easily recognizable packages. That’s because all cells are surrounded by a structure called the cell membrane. The cell is the very smallest unit of living matter. All living things including plants and animals are made up of cells. Cells are made of atoms‚ which are the smallest units of matter. There are many different kinds of cells. The two kinds you are most likely to be familiar with are animal and plant

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