REVISION NOTES FOR PRELIM BIOLOGY: [ A LOCAL ECOSYSTEM ] ~ Ecosystems: “any area that contains living organisms interacting with each other and their environment. In a balanced ecosystem‚ there is a flow of energy through it and recycling of some materials” Inputs and Outputs of Ecosystems include: - the energy flow through the ecosystem; energy from the sun flows one way through‚ with heat loss at each trophic level - the input and recycling of inorganic and organic material (matter) - the
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reticulum is mostly for making and annoying the that a particular type of cell needs. (www.thoughtco.com). According to softschool the endoplasmic reticulum is responsible for the production of the protein and lipid components of most of the cell’s organelles. (www.softschools.com/science) Golgi apparatus- According to softschool.com the golgi apparatus is to process and bundle macromolecules like proteins. The main functions of Golgi bodies include storing‚ packing and shipping of certain particles
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Biology Midterm Outline Topics: * Topic One: Chemistry of Living Things (p2-4) * Topic Two: The Cell (p5-6) * Topic Seven: Evolution (p23-27) * Topic Ten: State Labs (37-40) Topic One: Chemistry of Living Things I. All living things must maintain homeostasis in order to stay alive. A) Homeostasis: A balanced state in an organism’s body. B) Failure to maintain homeostasis results in disease or death. C) Homeostasis is often maintained using feedback mechanisms. 1. Feedback mechanisms
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of your body. In your skin cells there are little thing to tell the cell what to do. There is a nucleus is the control center of the cell. There is a cell membrane it the holder‚ so it holds everything in place in the cell. And Mitochondria is an organelle that is the digestive system. Eva:
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DNA EXTRACTION In extracting chromatin from the cells of wheat germ there are seven steps to follow. The optimal cell to use would be the polyploidal eukaryotic. Eukaryotes have nucleus membrane-bound organelles‚ while prokaryotic does not. The polyploidal eukaryotic cell has DNA that is held in the nucleus while the prokaryote has DNA that floats freely around the cell. The DNA of eukaryotes is more complex and extensive than the other. Prokaryote is a bacterial cell that
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fulfilling biology study at school. 6. DESCRIPTION This course provides with a concentrated introduction to the cell biology and human organ system. It emphasizes the concepts associated with the cell and its constituents of macromolecules and organelles. It also provides basic knowledge associated with cell dynamics‚ including a detailed study of the cell cycle and the central metabolism. It finally provides with basic scientific terms of histology‚ physiology and the concept of homeostasis.
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Chapter 4 Downstream Processing Objectives Student should be able to Define filtration‚ centrifugation‚ cell disruption‚ solvent extraction‚ chromatography‚ membrane process‚ action of force field‚ evaporation & drying Explain briefly on the concept of each topics stated above List out the uses & importance of each topic stated Introduction Each stage in the overall recovery procedure is strongly dependent on the history & quality of the biological production process. Maximization of
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Davson-Danielli model of plasma membrane with diagrammatic illustration. State the function(s) of the following cell organelles: (a) (b) (c) (d) (e) (f) 6. Golgi complex Mitochondria Smooth ER Rough ER Ribosomes Lysosome 3. 4. 5. Human red blood cells‚ erythrocytes (Figure 1) deviate from the typical eukaryotic cell in several aspects. Figure 1 (a) In terms of cell organelle composition‚ how do human erythrocytes differ from the typical eukaryotic cell? (b) Propose the advantage(s) of
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cytoplasm is a gel-like substance that is clear in colour made up of 80% water and also contains enzymes‚ salts‚ organelles and other organic molecules. It consists of all the contents outside of the nucleus and is encased within the cell membrane. The cytoplasm aids in moving materials around the cell‚ and is a solvent that allows nutrients and waste products within it to dissolve. The organelles inside of the cell are suspended in the fluid which is contained in the cell‚ otherwise known as cytosol. Cytoplasm
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Date: 28/11/13 EVALUATION OF THE EFFECT OF SODIUM CHLORIDE ON ONION EPIDERMAL CELLS INRODUCTION A living plant cell will shrinks or swells depending on the solute concentration of the cell in relation to the solute concentration of the fluid surrounding the cell (1). It follows that water will move from a region of high water concentration to a region of low water concentration therefore‚ if a cell is placed in a hypertonic solution water will move from the cell into the solution until the
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