8 In an osmosis experiment‚ four potato strips‚ each 5 cm in length‚ were left in salt solutions of different concentrations. The table shows the lengths of the strips after 30 minutes. Which salt solution was the most concentrated? 1 2 3 4 length of strips after salt solution 30 minutes A 4.5 cm B 4.8 cm C 5.0 cm D 5.3 cm Q) Use this diagram‚ which shows a cross-section through a leaf‚ to answer questions 14 and 15. 14 Which cell type absorbs the most carbon dioxide during the
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Module 1 Food Microbiology Sanitation and Safety WHAT IS Food Sanitation? Food sanitation is more than just Cleanliness. It includes protecting food in the ff. • Contamination • Harmful bacteria • Poisons • Foreign bodies The primary tenet of food service sanitation Is absolute cleanliness. Definition of terms commonly used Acidity = measured on a pH scale from 0 to 14.0 Additive = a chemical added to food Bacterium = a single-celled organism Contamination = unintended presence
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concentration to a solution of high concentration. On the other hand diffusion is movement of molecules from a high concentration to a low concentration. Osmosis is a form of diffusion but a distinction would be that it deals essentially with water. Tonicity is what makes the cells either shrink or grow depending on the environment it is placed at‚ it is an osmotic pressure and it is influenced by the different concentrations of solutes in and out of the cell. Filtration is what is used to remove solid
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Lab 5: Osmosis Purpose: The purpose of this lab is to familiarize you with osmosis and‚ specifically‚ what happens to cells when they are exposed to solutions of differing tonicities. Hypothesis: If we add higher concentrations of sugar to the dialysis tubing‚ then the net movement of coffee into the dialysis tubing will increase. Materials scale or balance 24" dialysis tubing 4 transfer pipets sugar scissors rubber bands four coffee cups - they need to be roughly the same size
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3 Intravenous Fluid Selection LEARNING OBJECTIVES By the end of this chapter‚ you should be able to: Describe and differentiate colloid and crystalloid IV fluids Understand osmosis as it pertains to water movement with IV therapy Define tonicity and the actions of isotonic‚ hypotonic‚ and hypertonic crystalloids in the body Identify the three most common IV solutions used in the prehospital setting‚ and classify them as isotonic‚ hypotonic‚ or hypertonic Describe how an IV fluid is packaged
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QUOTATION CALCULATION OF COSTS (5 X 10) Name of snack: Asparagus Wraps With Lemon Mayo Number of portions: 40 Ingredients Number of units (adjusted to serve 20 guests) -√ Purchase price √ Purchase unit √ Conversion (ml to g /kg) To match the purchasing unit √√ Calculation of unit price: Units used x Purchase price Purchase unit √√ Unit price of ingredient √ Asparagus 880g R44.99 250g (880 x 44.99)/250 R158.36 Parma Ham 100g R259.99 1000g (100 x
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Lab Manual—Version 1.1 Introductory Anatomy & Physiology © 2012‚ eScience Labs‚ LLC. All Rights Reserved www.esciencelabs.com • 888.375.5487 Table of Contents Anatomy & Physiology Version 1 Preface: Introduc on to the Fetal Pig Lab 1: The Key to Reproducible Science Lab 2: Cell Structure and Func on Lab 3: Mitosis and Meiosis Lab 4: Diffusion and Osmosis Lab 5: Tissues and Skin Lab 6: The Skeletal System Lab 7: The Muscular System Lab 8: The Nervous System Appendix: Good Lab Techniques
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no longer work to catalyse a chemical reaction. (Science Buddies on March 8‚ 2012) Aim : The objective of these experiments is to investigate the change in the decomposition rate between the catalase and hydro peroxide with cooked and raw potato and liver. Hypothesis: With consideration to previous studies done into the topic. It is hypothesized that the raw food will provide a higher rate of reaction than the cooked food will as the cooked food would have a higher chance of having denatured
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Assignment #1 Potatoes BPGM 244 Shawn Doucette Chris Tipoff January 28‚ 2009 Table of Contents Introduction 1 History of the Potato 2 The Potato Selection 3 Cooking the Potatoes 4 Conclusion 5 Bibliography 6 1. Introduction Potatoes are considered one of the most popular vegetables in Canada and the United States. The United States grows about 35 billion pounds of potatoes every year‚ which averages
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large surface area‚ this is probably the best method. 6.) During the great dehydration the stomach virus somehow raised the tonicity of the extracellular environment‚ activating the movement of water from the inside the cell to outside to balance solute concentrations across the membrane. The electrolytes in sports drinks are meant to enter into the cell‚ raise the tonicity relative to the outside. This would cause water retention inside the cell keeping it hydrated‚ therefore the opposite of dehydration
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