Lab report nº4 The aim of this experiment was to observe the change of enzyme reaction with different concentration of solution. For this experiment we used potato enzymes (catalase) and hydrogen peroxide in concentrations of 100%‚ 80%‚ 60%‚ 40%‚ and 20% According to P.George: “When catalase is added to hydrogen peroxide‚ there is an initial rapid evolution of oxygen which lasts for about two minutes‚ depending on the peroxide concentration. After this‚ oxygen is given off at a steady rate which
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CONTENTS Page INTRODUCTION GROUP 1 NATURE OF THE SUBJECT AIMS OBJECTIVES SYLLABUS OUTLINE SYLLABUS DETAILS ASSESSMENT OUTLINE ASSESSMENT DETAILS ASSESSMENT CRITERIA: GENERAL ASSESSMENT CRITERIA HL ASSESSMENT CRITERIA SL 1 3 4 5 6 8 14 20 26 41 43 61 IB Language A1‚ April 1999 INTRODUCTION The International Baccalaureate Diploma Programme is a rigorous pre-university course of studies‚ leading to examinations‚ that meets the needs of highly motivated secondary school students between the ages
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AP/IB Biology Lab Assessment The effect of various fruit and vegetable cell membranes on their water potential Independent variable: Type of fruit or vegetable. (Produce used: Russet potatoes‚ Pascal celery‚ Gala apple‚ Navel orange‚ and Imperator carrot). The fruit or vegetable will be placed in six 56.7 gram cups‚ ranging with sucrose molarities of 0 (distilled water)‚ 0.2‚ 0.4‚ 0.6‚ 0.8‚ 1.0‚ with 5 trials‚ leading to 30 cups for each produce variable. Dependent variable: The water potential
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Determining the equilibrium constant from pH values of changing concentrations of ethanoic acid Design Research question: How will altering the concentrations of ethanoic acid affect the pH value‚ and‚ in-turn‚ the equilibrium constant? Background information: When weak acids react‚ the reaction typically does not go to completion. Rather‚ the system goes to an intermediate state in which the rates of the forward and reverse reactions are equal. Such a system is said to be in chemical equilibrium
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Jolly Nguyen 11C Conditions needed for effective enzyme action Aim: To investigate the activity of enzymes and how might the activity be effected in different conditions. Hypothesis: Temperature rises and change of substrate concentration may cause denaturation of the protein of enzymes. So as the temperature rises the amount of active enzyme progressively decreases‚ and the rate is slowed. Exposure to heat causes atoms to vibrate violently and this disrupts bonds within globular proteins
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Medal Heights INTRODUCTION What is the purpose of this document? This document contains new tasks for the portfolio in mathematics SL. These tasks have been produced by the IB‚ for teachers to use in the examination sessions in 2012 and 2013. It should be noted that most tasks previously produced and published by the IB will no longer be valid for assessment after the November 2010 examination session. These include all the tasks in any teacher support material (TSM)‚ and the tasks in the document
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The Honorable Ronald Reagan and the IB Learner Profile “The International Baccalaureate® (IB) learner profile describes a broad range of human capacities and responsibilities that go beyond academic success.” – International Baccalaureate The IB Learner Profile is a compiled list of ten crucial attributes that exist to guide a student to become highly successful in school as well as external environments such as workplaces and homes. These traits include inquirers‚ knowledgeable‚ thinkers‚ communicators
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Welcome parents and guardians. My name isaosfh. I am a student in Ib. Ib is an intense academic program that prepares students for success in university and life in general. Every one of us has goals that they want to accomplish and succeed; Ib helps push our limits and inspires us to reach those goals. Being in high school is different compared to middle school. It has it’s ups and downs. At times the homework load is heavy‚ and at times it’s not. However‚ with the right time management and organization
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|Component of proteins and some | | | |needed for muscle growth |coenzymes | |Calcium (Ca) |Co-factor in some enzymes |Formation of bones and teeth |Important in formation of cell wall | |Phosphorus (P) |Phosphate group in ATP |Component of RNA and DNA |Component of phospholipids. | |
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molecules need to be broken down into smaller ones for absorption to occur. Summary: 1. Food needs to be broken down and reassembled. 2. Large food molecules need to be broken down into smaller ones. 6.1.2 Explain the need for enzymes in digestion. Enzymes are needed in the process of digestion as they are the biological catalysts which break down the large food molecules into smaller ones so that these can eventually be absorbed. Digestion can occur naturally at body temperature‚ however
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