chemicals/reagents in each test and the results that would indicate a positive or negative for each biochemical. 7. Define and understand the concepts behind common processes including diffusion‚ osmosis‚ active transport‚ Brownian movement and plasmolysis. 8. Understand the methods by which materials move through plasma membranes including diffusion and osmosis. 9. Be ready to define concentration gradient and turgor pressure. 10. Understand how differences in the molecular weight of a substance
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Diffusion And Osmosis Abstract In this Diffusion and Osmosis lab a total of three experiments were performed. For experiment 5.1 we investigate diffusion through a selectively permeable membrane and the many factors that influence the rates of diffusion. In experiment 5.2 we investigate both animal and plant cells in different molar solutions and the different osmotic behaviors within the cells. In experiment 5.3 we test the osmolarity of plant cells through the usage of potato tuber cells
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Experiment 2 : Transport Across Membrane Name : Matrix No : Group : B Semester : 1 Date of Experiment : 05.09.2013 Lecturer’s Name : Miss OBJECTIVE To study the effects of hypotonic‚ hypertonic and isotonic solutions on plant and animal cells. INTRODUCTION In cellular biology the term membrane transport refers to the collection of mechanisms that regulate the passage of solutes such as ions and small molecules through biological membranes‚ which are lipid bilayers
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resembles fruit‚ even if it does not develop from a floral ovary; also used in a technically imprecise sense for some sweet or sweetish vegetables‚ some of which may resemble a true fruit or are used in cookery as if they were a fruit‚ for example rhubarb."[2] Note that many edible plant parts that are true fruits botanically speaking‚ are not considered culinary fruits. They are classified as vegetables in the culinary sense‚ (for example: the tomato‚ cucumber‚ zucchini‚ and so on)‚ and hence they
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Question 1 0 out of 5 points Televangelist Jerry Falwell said that God’s anger with feminism led to the destruction of the World Trade Center. Given Falwell’s closeness to God‚ we have no alternative than to blame the feminists for this atrocity. Answer Selected Answer: Ignorance Correct Answer: Authority Question 2 0 out of 5 points No mathematician has ever been able to demonstrate the truth of the variants of the Goldberg conjecture‚ so they cannot all be true. Answer Selected
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I am going to investigate osmosis when potato is placed in different concentrations of sucrose. I am aiming to witness osmosis in 5 different concentrations of sucrose. I will use 5 varying concentrations so that I have a wider spread to compare the results‚ and check that I don’t have any anomalies Prediction Osmosis is the process of diffusion of water molecules from a weaker solution into a stronger solution‚ through a semi permeable membrane. The tiny pores in the membrane
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sherry vinaigrette (½ dozen) 33.50 32.50 17.00 28.00 20.50 35.50 37.00 dessert brandy custard‚ berry compote spice shard soft meringue with raspberry biscotti berry compote‚ limoncello drops gianduja parfait with puff squares rhubarb foam‚ honeycomb crumbs chocolate swirl *premium cheese selection served with nuts‚ quince paste lavosh *beer battered king george whiting fries‚ tartare sauce 13.90 35.00 13.90 side dishes corn cobbettes baby caesar salad 7.90 7.90 7
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J. Singer and Garth Nicolson in 1972 to describe the structural features of biological membranes. glycoproteins a protein covalently attached to a carbohydrate chain hypertonic solution causes cells to shrink; crenation in animal cells and plasmolysis in plant cells (more concentration) hypotonic solution cause cells to swell and burst; lysis in animal cells‚ turgor pressure in plant cells (less concentration) isotonic solution no change in cells osmosis diffusion of water across a semi-permeable
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What’s the difference between facilitated diffusion and simple diffusion? 7. What’s osmosis? 8. What’s the meaning of hypertonic‚ hypotonic‚ isotonic? Give examples if a RBC (red blood cell) was place in each type of solutions. 9. What’s plasmolysis and turgor pressure? 10. Compare and contrast the active transport of the sodium and potassium pump and the sodium glucose co transport? 11. What’s endocytosis? Give two examples. Exocytosis? 12. What are gap junctions‚ tight junctions‚ plasmadesmata
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What is a Cold Sore? A cold sore is a fluid-filled blister which usually appears at the edge of the lips. Cold sores are caused by a herpes simplex virus infection. The duration of a typical cold sore outbreak may last from 10-15 days. Practical Tips to Help Prevent a Cold Sore Use skin protectants‚ with sun protection factor‚ frequently on lips and surrounding skin especially before sun or wind exposure. Avoid triggers that can reactive the virus such as windburn‚ UV light (sun and
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