1 Class XII Chemistry Ch 5: Surface Chemistry Chapter Notes Top Concepts / Key learnings: 1. 2. 3. 4. 5. 6. Adsorption: The accumulation of molecular species at the surface rather than in the bulk of a solid or liquid is termed as adsorption. Adsorbate: The substance which is being adsorbed on the surface of another substance is called adsorbate. Adsorbent: The substance present in bulk‚ on the surface of which adsorption is taking place is called adsorbent. Desorption: The process of removing an
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IGCSE Biology Notes Refined by KmQ Unit 1 : Characteristics of living things Biology is the study of living organisms. For something to be alive it needs to perform all seven functions of living things.MRS GREN Movement‚ Respiration‚ Sensitivity‚ Growth‚ Reproduction‚ Excretion‚ Nutrition. 1. Movement Most organisms are able to move their whole body even plants can shift their stem towards the sunlight and their roots move towards healthy soil. 2. Respiration IT is the breakdown of food
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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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Cell structure and organization • Chloroplasts o Site of photosynthesis where light energy is absorbed o Consist of grana which are stacked up to increase surface area for absorption of light o Only present in plant cells • Cell membrane (plasma membrane) o Lipid bilayer that surrounds the cell‚ interspersed with protein molecule o Presence of temporary pores o Selectively permeable Controls movement of substances o Diffusion‚ osmosis and active transport can therefore take place o Prevent outflowing
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IGCSE Biology 2012 exam revision notes by Samuel Lees Contents: Section I: Characteristics and classification of living organisms 1. Characteristics of living organisms 2. Classification and diversity of living organisms 2.1 Concept and use of a classificatory system 2.2 Adaptations of organisms to their environment 3. Simple Keys Section II: Organisation and maintenance of the organism 1. Cell structure and organisation 2. Levels of organisation 3. Size of specimens 4. Movement in and out
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Exercise 1: Correct Use of the Scientific Method and an Experiment with Macromolecules I. Objectives In this lab‚ students will: a.) Learn how to utilize the Scientific Method to develop a testable hypothesis b.) Generate an effective experimental design from a hypothesis c.) Understand the chemical differences between different macromolecules and how these differences can be used to design tests for each molecule. d.) Identify macromolecules in solutions using chemical analyses. e.) Practice
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kidney failure‚ you need dialysis because you have lost eighty-five to ninety percent of your kidney function. Dialysis patients can still live an active and social lifestyle. Dialysis keeps your body in balance by removing waste‚ salt‚ and extra water. It also helps control blood pressure‚ keeping a safe level of chemicals in the blood‚ such as potassium‚ sodium‚ and bicarbonate. There are two different types of dialysis treatment options hemodialysis and peritoneal dialysis. Hemodialysis which is
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Molarities Through Dialysis Tubing (a Semi-Permeable Membrane) I. DESIGN A. PROBLEM/RESEARCH QUESTION 1. How does increasing molarity of sucrose affect osmosis through dialysis tubing? B. VARIABLES 1. The independent variable in this lab is the molarity of sucrose each dialysis bag is filled with. The time (30 minutes)‚ the temperature (23C) and the type of dialysis tubing used are all constants. 2. The dependent variable is the final mass of the dialysis bag.
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Case Study- Detecting Dialysis Death’s In mid-August 2001‚ four elderly people were suffering from kidney failure so they underwent Dialysis at Madrid Hospital. After dialysis the people became seriously ill and they died after the Dialysis treatment. The news about the death of patients did not come out. As per laws the hospital sent a legal notice to the maker of the dialysis filter. The company‚ which was making the dialysis filter‚ is a US based company - BAXTER INTERNATIONAL. Baxter international
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solution in which the dialysis tube was placed in is determined by the mass in grams of the dialysis tube before put in the solution compared to the mass after. If the mass increases‚ the dialysis tube was in a hypotonic solution since water went in the dialysis tube. If the mass decreases‚ the dialysis tube was in a hypertonic solution since water left the cell. If the mass stays the same‚ then the dialysis tube was in an isotonic solution since water went in and out of the dialysis tube at equal rates
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