Other than distilled water, a pattern appears between the concentration of sugar and the rate of pressure change. It appears that as the sugar concentration gets larger, the rate of pressure change becomes less negative, in a linear progression. 7. The concentration of sugar that would yield no change in pressure is about 1.33 M. This is biologically significant because it shows that this is the sugar concentration in a potato cell. 8. This happens because, as water is added to wilted plants
solution 4. Cover the beaker with a Petri dish and start the stopwatch. 5. Remove the agar cube from sodium hydroxide solution and dry it with a tissue paper. 6. Place the same agar cube on a clean white tile and using a sharp knife cut it into half. 7. Using a cm scale measure the distance of colour change from the edge of the cube. 8. Repeat this experiment two more times for accuracy. 9. Using sodium hydroxide solution to the experiment with cubes of sides 2 cm and 3 cm. Aim: To investigate
Chapter 1: Introduction: Themes in the Study of Life • Life is organized on many structural levels • Each level of organization has emergent properties • Properties of life • Cells are an organism's basic unit of structure and function • The continuity of life is based on heritable information in the form of DNA • Structure and function are correlated at all levels of biological organization • Organisms are open systems that interact continuously
chlorophyll and what pigments are in this chlorophyll? Mohammad Sharif AP Bio Introduction In this lab there are two experiments, one which is the paper chromatography and the other is testing the amount of light which is absorbed by the chlorophyll. In the first experiment we will use spinach chlorophyll and separate its pigments using
Lab 6-Enzymes Purpose: The purpose of this lab is to test for enzyme activity, look at enzyme specificity, and how temperature affects enzyme activity. Time need to perform this lab: approximately 3 hours Preparation FIRST: Read the lab in its entirety TWICE before you begin. You will perform the experiment, write your lab report and include the answers to the additional 4 questions within the text for full credit on this experiment. Materials: * 3% hydrogen peroxide * a household blender
Biology Lab #1 Deoxyribonucleic acid- a nucleic acid that contains genetic instructions used in the development and function of all known living organisms. (Long term storage of information) * To extract DNA using household product Hypothesis: By doing this experiment, I hypothesize the DNA will be extracted by swishing water around in my mouth then gently scraping my cheeks with water in my mouth. Lab: Lab tube C (control) 1 and 2 * Place 1-2 mLs of deionized water in each tube
Andrew Proulx Mrs. Maria 9-18-2012 Bio Post-Lab 1. Our choice of food for this lab was cheerios and they turned out to be somewhat healthy and energetic snack. They have no proteins or lipids, but do contain simple sugars, starch, and carbohydrates. Starch is used in ours cells to equalize concentration, while sugars and carbs are both good to provide energy. 2. To test an unknown solution for starch, you would need to create a standard curve graph, find the slope and absorbance
INTRODUCTION At the University of New England Biology lab, myself and three other students participated in a lab which asks the question; is it possible to increase the rate of reaction between an enzyme and a substrate by increasing concentration of the enzyme, and if so what is the optimal concentration of the enzyme which will yield the greatest percent reacted. Hypothetically we predicted the solution with the greater concentration to react faster than the solution containing the lower concentration
Exercise 1: Cell Transport Mechanisms and Permeability: Activity 3: Simulating Osmotic Pressure Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. Which of the following is true of osmosis? You correctly answered: c. It is a type of diffusion. 2. Which of the following occurs when a hypertonic solution is added to cells? You correctly answered: d. The cells shrink. 3. The variable that affects osmotic pressure is You correctly answered: a. the concentration
Biology Lab Report: Hearing Question: Does age affect ones hearing range in different genders? Hypothesis: I predict that the younger test subjects will be able to hear at a greater range than older ones will. As for the the gender I predict that it will not affect the test subject’s hearing range. Method: 1. A total of 16 subjects (2 male & 2 female at the age of 16, 2 male & female at the age of 32, 2 male and 2 female at the age of 48 and to male and 2 female at the age of 64) were