in water The ice cube sank Station #2 Cohesive properties of Water Observations on waters cohesive properties using a paper clip and a coin: Paper clip The paper clip stayed on top for a few seconds then it sank Coin We were able to place 12 drops of water before it overflowed‚ Station #3 Water as a solvent Observations when oil‚ food colorants‚ sugar and salt is poured into water ethanol or both and stirred: Cooking oil Food colorant Salt Sugar Water -Didn’t dissolve -stayed
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IB Bio HL Sarah Maybury Sex and the Single Guppy – a investigation Research Question: How does the colour of a guppy affect the population size with 30 acra and 30 rivulus as predators over 8 generations of oberservation? Independent Variable: The colour of the guppy and the concentration of that colour in the river. Dependent Variable: The population of guppies left after 8 generations of being in the specific
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concentration of substrate‚ on the activity of the enzymes. By conducting these three separate experiments also‚ three graphs are able to be obtained where the trend of each factor affecting on the enzyme activity is shown and described clearly. II. Hypothesis Experiment 1 (Effect of Temperature): As the temperature increases‚ the height of the bubble will increase too‚ indicating a faster rate of reaction. Experiment 2 (Effect of pH): Enzymes are affected by changes in pH. Extremely high or
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regular hydrogen peroxide 1%‚ 25%‚ 50%‚ 75%‚ and 100% substrate concentration tweezers timer permanent marker pen/pencil paper for data PROCEDURE: The experiment begins with five beakers full of various substrate concentrations. To begin the lab‚ gather five plastic‚ Solo cups and label them 1%‚ 25%‚ 50%‚ 75%‚ and 100% with the permanent marker. Then‚ fill each cup with 75 mL of regular hydrogen peroxide. After‚ lightly dip the filter paper into the 1% substrate concentration till it is completely
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leaves your mouth it travels down the Pharynx to the Esophagus swallowing Peristalsis until the food gets to the small | |intestine for chemical digestion. This is where the food is further broke down into even smaller molecules by protein enzymes in | |the small intestine. Water molecules are added to each bond
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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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Rachel Bosley Ms. McLennan 25 Feb‚ 2015 U1A6 – Editing the Essay Studying Literature in Grade 12 (Edited) Hopefully by the end of this essay‚ you will agree that graduating students in Ontario should only study Canadian literature in a Grade Twelve English course. While good writers exist in all cultures‚ Ontario students should only study Canadian writers‚ because we need to become more familiar with our country’s literature. Three reasons for this are: the need to focus on our own Canadian culture
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hydrogen peroxide and potatoes (enzymes)? Introduction The enzyme used for this experiment is Catalase. Catalase is inside mostly any living organism which uses oxygen. Its job is to break down hydrogen peroxide‚ into oxygen and water. (Formula) 2H2O2 ---> 2H2O + O2 (lab manual). There are limiting factors which if altered‚ can alter the procedure of the reaction‚ such as temperature‚ pH‚ and the concentration of either the enzyme or the substrates. Enzymes are specialized class of protein
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Cell Biology Lab - Homework 1 Due to the week of Oct. 6-10th This is NOT a lab group project. Do the work individually. You may use any source other than your fellow students. Show your work‚ use your own words and cite all references. 1. (20 points) The HeLa S3 cancer cell line is considered to be “continuous” due to acquired mutations that enable the cells to evade senescence. This property is one of several hallmark characteristics of cancer cell lines. Describe three hallmark characteristics
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LAB 1: What temperature does the enzyme actually work properly in? (Hypothesis) If the temperature is below 40 but above 20‚ then the liver will show bubbles. If the temperature is raised higher than the optimum temperature‚ then an extreme decline in enzyme activity would occur following by the quick denaturing of the enzyme‚ rendering it is permanently useless. Also about 37°C is body temperature. The liver that was at 25°C had a huge amount of bubbles (a 4 on the scale) and the 0°C
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