Potato Osmosis Biology SL - ATh INVESTIGATION “Potato Osmosis” INTRODUCTION Osmosis is a process that occurs at a cellular level that entails the spontaneous net movement of water through a semi-permeable membrane from a region of low solute concentration to an area of high solute concentration in order to equalize the level of water in each region. Involved in this process are hypotonic‚ hypertonic and isotonic solutions. A hypotonic solution is one with a lower osmotic pressure‚ indicating
Premium Osmosis
AP Environmental Science Text: Environment 4/E Raven & Berg Instructor: Jennifer Davis TABLE OF CONTENTS Part 1 Humans in the Environment Chapter 1 Our Changing Environment 8 Chapter 2 Using Science to Address Environmental Problems 18 Chapter 3 Environmental History‚ Legislation‚ and Economics 28 Part 2 The World We Live In Chapter 4 Ecosystems and Energy 39 Chapter 5 Ecosystems and Living Organisms 49 Chapter 6 Ecosystems and the Physical Environment 59 Chapter 7 Major
Premium Natural environment Environmentalism Ecology
Abstract: This report presents the reason why the ocean does not freeze in the winter. Since the ocean consists of salt water‚ an experiment was done to test the effect of freezing on salt water compared to pure water. The experiment was conducted three times in order to obtain accurate results and eliminate errors. In addition to the salt and pure water experiment‚ a variation of this experiment was created to test other options. In the variation experiment the effect of freezing on sugar water
Premium Water
EXPERIMENT NO. 1 INTRODUCTION TO LAB INSTRUMENTS. 1. BREADBOARD We should be familiar to the following things about a breadboard: * What is a breadboard and what is it used for? * How does it work? * Setting Up. * Limitations. What is a breadboard and what is it used for? A breadboard (or protoboard) is usually a construction base for prototyping of electronics. The term "breadboard" is commonly used to refer to a solderless breadboard (plugboard). It was designed by
Premium Voltage Direct current Alternating current
INTRODUCTION There are many reasons for knowing the identity of microorganisms. The reasons range from the knowing the causative agent of a disease to knowing the correct microorganism in order to make antibiotics. This study was done by applying the following methods; OF Glucose‚ Indole Production‚ and Malonate Utilization test for the identification of an unknown bacterium. The methods will assist in determining the unknown bacterium found in a 55 year old male that was passing blood and mucous
Premium Bacteria Microbiology
Imagine an ancient guru preaching about the energy flow of everything in the universe and how it is all connected. The biogeochemical cycles discussed in chapter 5 in Visualizing Environmental Science by Berg and Hager can be thought of a scientific explanation for a philosophical idea. The decision to write about this topic stemmed from recognizing the potential ideas that could flower from studying how the cycles work and how they relate to each other. When discussing things like pollution‚ more
Premium Natural environment Ecology Science
Abstract: The Enzyme Lab results where when the liver was frozen‚ its reaction was fast‚ and when it was hot‚ it was slow‚ and the liver that was at room temperature reacted slowly to medium. Introduction: The Enzyme Lab is to conduct investigations to determine the most favorable conditions for the most efficient enzyme activity. Variables to be used testing include temperature‚ pH values and surface area. Enzymes are proteins that speed up the rate of chemical reactions‚ which would otherwise
Premium Enzyme Chemical reaction Chemistry
Environmental Science Worksheet SCI 256/ Week 1 April 29‚ 2013 1. Silent Spring is a book that Rachel Carson wrote in 1960 and was only the beginning of the environmental movement. During the same time there were many several major environmental events that were occurring. These environmental events include oil spills along southern California’s and Massachusetts coasts. Extinctions of many species were also taking place‚ for animals such as whales‚ song-birds‚ and elephants. James Lovelock
Premium Population growth Life World population
Environmental Science Final Study Guide ENERGY • • • • • • Energy is the capacity to do work (Work = Force x Distance) or to move matter. Different forms of energy: o Chemical energy o Radiant energy o Solar energy o Thermal energy o Mechanical energy o Nuclear energy o Electrical energy Kinetic energy (moving energy) o Associated
Free Oxygen Pollution Hazardous waste
Oscillators & Oscilloscope Morgan Dennis @02514008 Partners: Brittany Smith‚ Michelle Trang‚ James Anderson‚ Madison Shaw OBJECTIVE: We are going to study the features and operation of the oscilloscope. We will use the instrument to measure the frequency and amplitude for various sources. Ultimately‚ the oscilloscope will display the Lissajous figures. APPARATUS: The major apparatus used include; Oscilloscope‚ two audio oscillators‚ battery and connectors. THEORY: The oscilloscope
Premium