"Cultural Diffusion" Essays and Research Papers

  • Cultural Diffusion

    Ronald Wilson Pd:4th 11/16/12 Introduction In this experiment diffusion and osmosis is the main idea. When using diffusion and osmosis you are trying to separate different solute concentrations on either side of the membrane. Only a solute's relative concentration, or water potential, affects the rate of osmosis. The higher the concentration of solutes, the faster water will flow through the membrane to equalize the concentration. The way we describe the movement from higher to lower concentration...

    Chemistry, Concentration, Diffusion 514  Words | 3  Pages

  • diffusion

    Diffusion Introduction Diffusion is the net movement of ions or molecules from a region of high concentration to a region of low along the concentration gradient until equilibrium has been reached. The steeper the gradient the faster the rate of diffusion. There are a few types of diffusion. Three (3) of those are: Facilitated Diffusion- refers to diffusion of substances across a cell membrane with the help of transport protein. Dialysis- refers to the diffusion of solutes across...

    Chemistry, Diffusion, Facilitated diffusion 828  Words | 4  Pages

  • Diffusion

    Diffusion is the process by which a particular phenomenon --- such as a contagious disease, a technological innovation or even an idea --- is spread from person to person over a period of space and time. One method of diffusion is known as expansion diffusion, which is broken down into three distinct types. Expansion Diffusion * Strictly defined, expansion diffusion is the process of spreading something from one place to another in an ever-expanding "snowballing" process. Expansion diffusion...

    Black Death, Disease, Disease diffusion mapping 1221  Words | 4  Pages

  • What Is Diffusion? Explain the Various Form of Diffusion.

    Diffusion is one of several transport phenomena that occur in nature. A distinguishing feature of diffusion is that it results in mixing or mass transport, without requiring bulk motion. Thus, diffusion should not be confused with convection, or advections, which are other transport mechanisms that utilize bulk motion to move particles from one place to another. In Latin, "diffundere" means "to spread out". There are two ways to introduce the notion of diffusion: either a phenomenological approach...

    Batchelor scale, Culture, Diffusion 766  Words | 3  Pages

  • Diffusion Lab

    Diffusion Lab Purpose: - To determine how temperature affects diffusion. - To determine how type of membrane affects diffusion. - To determine how size of solute affects diffusion. - To determine how concentration of solute affects diffusion. - To observe plant cells in hypertonic solution. Hypothesis: - I believe that warm watter will diffuse the fastest. - I believe that the mass of the potato in distilled water will increase. - I believe that the mass of the potato in...

    Carbohydrate, Diffusion, Enzyme 971  Words | 5  Pages

  • Diffusion and Osmosis

    concentration. In this lab, we can determine the direction of diffusion of small molecules by measuring the diffusion of small molecules through dialysis tubing. This tubing acts as a selectively permeable membrane, and allow to pass larger molecules slowly. Introduction: Cells have kinetic energy and it causes the molecules of the cell to move around and bump into each other. Diffusion is one result of this molecular movement. Diffusion is the passive movement of molecules from an area of higher...

    Chemistry, Concentration, Diffusion 884  Words | 3  Pages

  • Diffusion of Molecules

    LAB EXERCISE: Diffusion and Osmosis Laboratory Objectives After completing this lab topic, you should be able to: 1. Describe the mechanism of diffusion at the molecular level. 2. List several factors that influence the rate of diffusion. 3. Explain why diffusion is important to cells. 4. Describe a selectively permeable membrane, and explain its role in osmosis. 5. Define hypotonic, hypertonic, and isotonic in terms of relative concentrations of osmotically active substances. 6. Discuss...

    Cell, Cell membrane, Cell wall 844  Words | 3  Pages

  • Diffusion and Osmosis

    DIFFUSION AND OSMOSIS: WHAT’S TO EXPECT? Diffusion and osmosis are very important in biological process. Diffusion is the movement of molecules or ions from a region of their high concentration to a region of their low concentration. Osmosis is the diffusion of water molecules across a semipermeable membrane. To gain a better understanding of diffusion and osmosis, we examine multiple experiments to show diffusion and osmosis in animal cell, plant cell and synthetic cell. In our first experiment...

    Cell, Diffusion, Glucose 1370  Words | 4  Pages

  • biology-diffusion

    Simple diffusion The term simple diffusion refers to a process whereby a substance passes through a membrane without the aid of an intermediary such as a integral membrane protein. The force that drives the substance from one side of the membrane to the other is the force of diffusion. In order for substances to pass through a cell membrane by simple diffusion it must penetrate the hydrophobic core of the phospholipid bilayer. The types of molecules that can do this are themselves substantially...

    Carbon dioxide, Cell, Cell membrane 890  Words | 3  Pages

  • Diffusion and Osmosis

    Kristen Demaline Bio 1113, Lab 3: Diffusion and Osmosis Osmolarity of Plant Cells In this class, we learned about hypertonic, hypotonic, and isotonic solutions. Hypertonic solutions have a higher concentration of solutes outside of the membrane, hypotonic solutions have a lower concentration of solutes outside the membrane, and isotonic solutions have an equal amount of solutes inside and outside of the membrane (Morgan & Carter, 66). When the solute concentration...

    Chemistry, Concentration, Diffusion 1606  Words | 5  Pages

  • Diffusion Lab

    Lab One – Diffusion and Osmosis SECTION ONE: Methods Lab 1 – Diffusion and Osmosis can be broken down into four parts (A, B, C, and D). Lab 1A – Diffusion In this exercise, we tested diffusion through dialysis tubing. This was done through a demo with the teacher, rather than individually in groups. First, a piece of 2.5cm dialysis tubing was obtained. Then one end was folded and clipped securely so that a solution poured into the bag would not leak out. Next, the other side of the bag was...

    Carbohydrate, Dialysis, Dialysis tubing 907  Words | 3  Pages

  • Diffusion of Osmosis

    Diffusion Experiment: Osmosis in Sucrose Solutions Abstract We used dialysis tubing to simulate a semi-permeable membrane. Since molecules diffuse from their higher concentration to their lower concentration, water will move across the membrane in response to this concentration. While conducting this lab we were able to observe passive transport through diffusion and osmosis. Introduction Osmosis is a specialized case of diffusion that involves the passive transport of water. When...

    Chemistry, Concentration, Dialysis tubing 786  Words | 3  Pages

  • Diffusion and Osmosis Lab

     Examining Diffusion and Osmosis Introduction: Purpose: 1. To simulate and observe the diffusion of solutes and the osmosis of water through a semipermeable membrane through color change and sugar tests. 2. To speculate osmosis occurring in dialysis bags and potato cores by comparing percentage change in masses. Background information: Molecules are always in random, constant movement due to their kinetic energy. This causes the molecules of a cell to move around and bump into each other...

    Cell, Cell membrane, Cell wall 1363  Words | 5  Pages

  • Osmosis and Particles Diffusion

    Diffusion, Osmosis, Active Transport There are two ways in which substances can enter or leave a cell: 1) Passive a) Simple Diffusion b) Facilitated Diffusion c) Osmosis (water only) 2) Active a) Molecules b) Particles Diffusion Diffusion is the net passive movement of particles (atoms, ions or molecules) from a region in which they are in higher concentration to regions of lower concentration. It continues until the concentration of substances is uniform throughout. Some major examples of diffusion...

    Cell, Diffusion, Osmosis 954  Words | 3  Pages

  • Brownian Motion, Diffusion and Osmosis

    Jean Perrin, a French physicist who later won the Nobel prize, spring boarded off of Einstein's work. Using Brownian motion as evidence, he proved in 1911, once and for all, that matter is made of atoms and molecules. Diffusion Diffusion, also called molecular diffusion, is the process by which molecules of a given substance move from an area of relatively high concentration to an area of lower concentration. When the molecules have diffused so that they are in a uniform concentration, this...

    Brownian motion, Cell membrane, Concentration 1076  Words | 4  Pages

  • Osmosis and Diffusion Lab

    Osmosis and Diffusion Title: Diffusion and Osmosis AP Lab 1 Purpose: The purpose of this activity is to determine the effects of a selectively permeable membrane on diffusion and osmosis between two solutions separated by a membrane. Hypothesis: Procedures: In lab manual Material: In lab manual Background Information: Data: Table 1 Diffusion of glucose and iodine. | Color | Glucose | Time | Dialysis Bag | Beaker | Dialysis Bag | Beaker | Start | | | | | 30 minutes...

    Cell biology, Dialysis tubing, Diffusion 600  Words | 3  Pages

  • diffusion across permeable membrane

    Marie Gorjon Mrs. B Anatomy & Physiology 168 March 14, 2014 Diffusion across a Selectively Permeable membrane Introduction: Diffusion is movement of molecules from one area of concentration to another. This process is vital for the life functions of cells. Cells have selectively permeable membranes that allow only certain solutions to pass through them. Osmosis is a special kind of diffusion that allows water to go through semi-permeable membranes of high water potential to a region of lower...

    Cellulose, Dialysis tubing, Diffusion 679  Words | 3  Pages

  • Essay on Apbio Osmosis and Diffusion

    Lab Report on Osmosis and Diffusion Biology 1, Period 3 March 15, 2010 Lab Team: Jason Perez, Kicia Long, Chris McLemore Purpose: The purpose of this lab is to observe the acts of passive transport: diffusion and osmosis in a model membrane system. The experiment will show how molecules in solution move from areas of higher concentration to areas of lower concentration. The model membrane is dialysis tubing. Materials Used 2.5 cm dialysis tubing 15% glucose...

    Dialysis tubing, Diffusion, Enzyme 750  Words | 3  Pages

  • Escience Lab 6 Diffusion

    Marshall S. Chavis BIO-110 Lab 6 Diffusion Experiment 1: Table 1: Diffusion Through Liquids Corn Syrup Pickle Juice Time(sec) Blue Dye Red Dye Blue Dye Red Dye 10 15 10 7 10 20 25 30 15 13 30 27 40 17 15 40 28 43 20 17 50 29 46 23 18 60 30 48 24 19 70 31 51 25 23 80 32 51 25 23 90 32 51 25 23 100 32 52 25 25 110 32 52 26 25 120 32 52 26 25 Table 2: Diffusion Rate of Dyes in Corn Syrup Dye Name Molecular Weight Total Distance...

    Corn syrup, Dialysis, Dialysis tubing 654  Words | 6  Pages

  • Biology lab report diffusion

    Nikhil Gopalam October Mailbox #55 Affects of Osmosis and Diffusion Introduction: Perfume spreads in a room, hands bloat when left in water for too long (shriveling is a common misconception), a tea bag’s contents diffuse through the water. These are all examples of diffusion and osmosis. These phenomena happen everyday and people don’t realize what is actually happening. The purpose of the lab is to see the effects of diffusion and osmosis. In part B, the higher the concentration of solute...

    Chemistry, Concentration, Dialysis tubing 919  Words | 4  Pages

  • Diffusion and Osmosis Lab Report

    Diffusion and Osmosis NGSSS: SC.912.L.14.2 Relate structure to function for the components of plant and animal cells. Explain the role of cell membranes as a highly selective barrier (passive and active transport). SC.912.L.14.3 Compare and contrast the general structures of plant and animal cells. Compare and contrast the general structures of prokaryotic and eukaryotic cells. AA Background: (Source: www.explorelearning.com) Diffusion is the process in which there is a net movement of...

    Cell, Cell membrane, Cell wall 1152  Words | 5  Pages

  • diffusion lab reportt

    Fatmata Diffusion Abstract dialysis tubing is, made of cellulose because it’s a selectively permeable membrane. In this experiment, we are testing to see if the solution in the beaker moves into the dialysis bag. Which because of that, Introduction Diffusion and osmosis are two types of transport mechanisms. Diffusion is the movement of molecules from areas of higher concentrations to areas of lower concentration until the molecules are evenly distributed through the area. Osmosis is the...

    Cell, Dialysis tubing, Diffusion 536  Words | 2  Pages

  • Gaseous Diffusion Coefficient

    TUNKU ABDUL RAHMAN Faculty : Engineering & Science Unit Code : UEME3213 Course : Unit Title : Heat and Mass Transfer Year/ Semester : Year 3/ Semester 2 Lecturer : Session : Experiment 2: Gaseous Diffusion Coefficient Objective To determine gas diffusion coefficient of acetone Introduction The knowledge of physical and chemical properties of certain materials is important because very often process engineering deal with the transformation and...

    Carbon dioxide, Diffusion, Distillation 515  Words | 3  Pages

  • Diffusion Lab Assignment

    Diffusion Lab Assignment Go to your student portal in eScience and click the “Diffusion” lab. Complete the following assignment: Pre-Lab Questions. Answer the following questions in complete sentences after reading through “Diffusion” information 1. A concentration gradient affects the direction that solutes diffuse. Describe how a molecules move with respect to the concentration. 2. How does the size of a solute affect the rate of diffusion? Consider the size and shape of a molecule in your response...

    Carbohydrate, Dialysis, Dialysis tubing 1755  Words | 6  Pages

  • Osmosis & Diffusion Review Sheet

    Osmosis & Diffusion Review Sheet Name: Fill in the Blank away low high hypertonic hypotonic diffusion molecules osmosis vacuole water solute permeable towards semi-permeable concentration gradient 1. The cell membrane regulates and controls what kind of molecules ______ move in & out of the cell. 2. When molecules spread from an area of high to low concentration, it is called _Diffusion_____. 3. As molecules diffuse, they create a _concentration gradient_____...

    Cell membrane, Chemistry, Concentration 768  Words | 4  Pages

  • Diffusion and Osmosis Worksheet

    Diffusion and Osmosis Worksheet Diffusion is the movement of particles from areas of higher concentration to areas of lower concentration. It is a natural, random process. This means that it does not require extra energy input. 1a. These are pictures of molecules frozen at two different times. Draw arrows to show the direction each particle might travel due to diffusion in diagrams A and B. A. B. Random arrows Random arrows 1b. Describe the way the particles...

    Bacteria, Cell membrane, Cell wall 655  Words | 3  Pages

  • Diffusion and Osmosis

    Effects of Osmosis and Diffusion The experimentation of last week’s lab was in order to test the many effects of diffusion and osmosis amongst four experiments. One such experiment was testing the effects of molecular weight on diffusion in relation to the use of Agar. The methods performed included the use of two acids, HCl and acetic acid. Both acids were placed into an Agar-filled dish and, over increments of 15 minutes, data collection was taken based off the diffusion rate and the diameter...

    Cell wall, Chemistry, Diffusion 1985  Words | 6  Pages

  • Lab 4 Diffusion and Osmosis

    1. Diffusion and Osmosis, June 4, 2013 2. Purpose: The purpose of this lab is to help give visual understanding of diffusion which is a solution of high concentration spontaneously (no energy required) moving to an area of low concentration. Also taking a look at osmosis, which is the movement of chemicals across the cell membrane. Osmosis requires some type of energy to be put in for this to happen. After these experiments we should have a better idea and visualization of how chemicals transfer...

    Carbohydrate, Cell, Chemistry 657  Words | 5  Pages

  • Diffusion and Osmosis

    Diffusion of Ammonium hydroxide with red litmus paper Definition of diffusion 1. Diffusion is the process in which particles move from an area of high concentration to an area of low concentration in order to evenly spread out. 2 Diagram. 3. During the diffusion tube experiment I noted that firstly ammonium hydroxide was placed on to a piece of cotton wool. The cotton wool (with the ammonium hydroxide) was then placed in to a diffusion tube containing around 10 pieces of curled red...

    Carbon dioxide, Concentration, Diffusion 1962  Words | 6  Pages

  • Diffusion and Osmosis

    Lab Activity No. __ Diffusion and Osmosis I. Introduction Diffusion is the transfer of molecules (or ions) from an area of higher concentration to a lower concentration, while osmosis is the transfer of water from a higher concentration to a lower concentration. II. Objectives 1. Demonstrate diffusion and osmosis across membrane. 2. Examine the relation of membrane permeability to diffusion and osmosis. III. Materials 2 thistle tubes, 2 big beakers, 4 tube clamps to fit iron stands...

    Chemistry, Diffusion, Leaf 915  Words | 4  Pages

  • Diffusion and Osmosis Lab

    Diffusion and Osmosis Experiment Methods/Materials: 7.1 Experiment: Rate of Diffusion of Solutes In the initial set up of this experiment I had 2 sets of 3 screw-cap test tubes that had each been half-filled with 5% gelatin and 1-mL of the correct dye (either potassium dichromate, aniline blue, or Janus green) in each of the test tubes. I labeled the 3 test tubes of set 1 with which die they contained and marked them “5 ˚C”. Then with the other set I did the same exact thing, except I labeled...

    Blood, Cell, Cell wall 2132  Words | 6  Pages

  • Process of Diffusion and its importance in living organisms

    Process of Diffusion and its importance in living organisms Diffusion is the movement of molecules or ions down a concentration gradient i.e. from an area of high concentration to an area of low concentration. For a diffusion system to be efficient, it should have a large surface area so that high amount of substances can be exchanged at a time. It should also have a thin membrane and a continuous supply of substances, as a thin membrane means that the diffusion pathway would be short, and the continuous...

    Carbon dioxide, Cell, Cell membrane 1009  Words | 3  Pages

  • Rate of Diffusion

    The Correlation between the Diffusion Rate of a Substance and its Molecular Weight ABSTRACT To test the effect of molecular weight on the rate of diffusion, various experiments were performed. One of which is the glass tube test wherein cotton balls of the same size were moistened in two different substances (NH4OH and HCl). These cotton balls were plugged at each side of a glass tube. After some time, formation of a white ring occurred. The white ring, in fact, is a product of the reaction between...

    Ammonia, Diffusion, Hydrochloric acid 1524  Words | 5  Pages

  • Diffusion Lab

     Diffusion Through Membranes IB Biology 11 Diffusion Through Membranes OBJECTIVES In this experiment, you will Use a Conductivity Probe to measure the ionic concentration of various solutions. Study the effect of concentration gradients on the rate of diffusion. Determine if the diffusion rate for a molecule is affected by the presence of a second molecule. BACKGROUND Diffusion is a process that allows ions or molecules...

    Chemistry, Diffusion, Molecular diffusion 1341  Words | 5  Pages

  • Osmosis and Diffusion

    Joshua Annan Biology Section-04 Diffusion and Osmosis December 14,2012 Alexis, Adiba, Elliot and Joey Purpose: The purpose of this lab is to get a better understanding of osmosis and diffusion in molecules. We will do this by studying different solutions and how they move through the permeable membrane. Hypothesis: The three different possible predictions were the lab were that the mass would stay the same, the mass will increase, or the mass will decrease...

    Chemistry, Diffusion, Glucose 1104  Words | 4  Pages

  • Diffusion and Glucose

    Physioex 9.0 Review Sheet Exercise 1 Cell Transport Mechanisms and Permeability Name Lab Time/Date ___ Activity 1 Simulating Dialysis (Simple Diffusion) 1. Describe two variables that affect the rate of diffusion. Size of material and concentration 2. Why do you think the urea was not able to diffuse through the 20 MWCO membrane? How well did the results compare with your prediction? The molecules were too large to pass through. This is what I predicted...

    Chlorine, Diffusion, Molecular diffusion 1471  Words | 7  Pages

  • Diffusion with Surface Area to Volume Ratio

    the cell. The movements within a cell are called Diffusion. When molecules move across a cell membrane it is known as Osmosis. Diffusion is the process by which molecules of a substance move from areas of higher concentration of that substance to areas of lower concentration. Diffusion can be the transfer of anything anywhere. However, that is not true for osmosis. Osmosis is diffusion, but a specific type of diffusion. Osmosis is only the diffusion of water molecules through a selectively permeable...

    Chemistry, Dialysis tubing, Diffusion 847  Words | 4  Pages

  • Effects of Osmosis and Diffusion on Pears in Different

    1. Provide aim and background information 1.1 Diffusion is the process which molecules dissipate into a solution evenly over a period of time. An example is putting sugar in your coffee, after a while if you don't mix the solution, the sucrose will over time, go through the process of diffusion and be distributed throughout the coffee. Osmosis is movement of H2O molecules passing through a permeable cell membrane to the less concentrated solution, eventually to reach an equivalent number of molecules...

    Cell membrane, Chemistry, Concentration 1723  Words | 5  Pages

  • Lab 1 - Egg Osmosis and Diffusion

    Diffusion and Osmosis Experiment with a Shell-Less Egg After Three days of Testing Methods with Water and Corn Syrup Lisa July 1, 2013 Purpose To use the properties of diffusion and osmosis to see the effects of either corn syrup or water on a shell-less raw egg over a three day period. While looking to see the effects of these liquids on the raw egg, one can also apply the properties of hypotonic, hypertonic, and isotonic solutions. Introduction Cells have an outer covering called the cell...

    24-hour clock, Acetic acid, Chicken 1575  Words | 5  Pages

  • Osmosis and Diffusion Via Dialysis Tube

    Open-ended Lab: Osmosis and Diffusion in Dialysis Tubing Name(s): Background: It is very difficult to measure or see osmosis actually occurring in cells because of the small size of most cells. However, if an artificial membrane that acts in some ways like a real plasma membrane could be found, than a study of osmosis using a model cell would be possible. Dialysis tubing is a manmade semi-permeable membrane that is used to treat people who have kidney failure. Dialysis is a process where substances...

    Diffusion, Enzyme, Glucose 1961  Words | 4  Pages

  • Osmosis/Diffusion

    Introduction: Diffusion and osmosis are passive processes of transport. Passive transport involves no disbursement of energy by the cell. Diffusion movement is from high concentration to low concentration, which the driving force for this type of movement is kinetic energy particles themselves. Which crystal (Methylene blue, solid or Potassium Permanganate KMnO4-purple) will move further than the other due to the driving force (kinetic energy)? My prediction is that Potassium Permanganate KMnO4-...

    Chemistry, Concentration, Diffusion 917  Words | 3  Pages

  • Investigating Diffusion of Molecules across a Membrane

    Results The objectives of this experiment were to investigate diffusion of molecules across a membrane and the factors that affect the rate of diffusion. The hemolysis time of sheep erythrocytes was measured for each of eight different nonelectrolyte solutions by eleven groups in BI 108 Section D2. These eight nonelectrolytes were urea, thiourea, methanol, ethanol, propanol, ethylene glycol, diethylene glycol, and triethylene glycol, and the mean hemolysis times can be seen below in Figure 1....

    Diffusion, Ethylene glycol, Ethylene oxide 958  Words | 4  Pages

  • Osmosis and Diffusion on Different Concentrations of Sodium Chloride on a de-Shelled Chicken

    the aim and background information 2.1. Diffusion is the spontaneous kinetic movement by which molecules move from an area of a high concentration to an area of low concentration. Diffusion continues until it reaches equilibrium. Osmosis is similar to Diffusion but it’s the process in which water moves across a semi-permeable membrane and goes to the higher concentration of solute.1 2.2. Important factors to Osmosis and Diffusion include Temperature, Concentration and Surface area...

    Cell wall, Chemistry, Concentration 1540  Words | 5  Pages

  • Diffusion

    of the cell. An important part of regulating this is passive transport. Passive transport is the movement of materials through membranes without any input of energy. One type of passive transport is diffusion. Passive transport is the diffusion of substances across a membrane. In diffusion, molecules will usually move from where the substance is more concentrated to where it is less concentrated. The molecules also tend to spread out in the space they enter just like food coloring in water...

    Cell, Cell membrane, Cell wall 431  Words | 2  Pages

  • Difference Between Diffusion And Osmosis

    2015/5/25 Difference Between Diffusion and Osmosis | Difference Between | Diffusion vs Osmosis Difference Between Similar Terms and Objects   Search Miscellaneous Religion Islam Culture Politics Ideology Political Institutions Leaders Career & Education Fashion & Beauty Entertainment Sports Legal Geography Technology Software internet Hardware Protocols & Formats Communication Web Applications Industrial Household Equipments Career and Certifications Objects Gadgets SmartPhones Tablets Gaming Food...

    Diffusion, Energy, Homeostasis 816  Words | 5  Pages

  • Diffusion of Substances Across Semi-Permeable Membranes

    allow certain molecules or ions to pass through it by diffusion. 3. What is osmosis? How is osmosis different from diffusion? What is osmosis? The movement of water across a semi permeable membrane toward a solution containing a relatively high solute concentration. How is osmosis different from diffusion? Osmosis covers the movement of water across a membrane toward a solution containing a high solute, whereas diffusion covers passive movement from an area of higher concentration...

    Atom, Bag-In-Box, Chemistry 1001  Words | 5  Pages

  • diffusion across cell membrane

    Biology Lab Report Title: Diffusion of substances across the membrane Aim: The aim of the experiment is to investigate the relationship between the diffusion and the surface area to volume ratio with the help of agar blocks and hydrochloric acid. The research question is how does the difference in surface area to volume ratio affect the rate of diffusion? Agar is a jelly like substance, which may turn red when kept in hydrochloric acid as the acid diffuses through the membrane of the agar...

    Agar, Agar plate, Area 691  Words | 4  Pages

  • Simple Diffusion

    Simple Diffusion Activity 1: Simulating Simple diffusion 1. What is the molecular weight of Na+? 22.99 or 23 2. What is the molecular weight of Cl-? 35.45 3. Which MWCO dialysis membranes allowed both of these ions through?50,100, 200 4. Which materials diffused from the left beaker to the right beaker? Urea, NaCl and glucose diffused 5. Which did not? Why? Albumin was too large to diffuse into the right beaker. Activity 2: Simulating Dialysis 6. What happens to the urea concentration...

    Chemistry, Concentration, Diffusion 780  Words | 3  Pages

  • Diffusion Osmosis Lab Report

    October 12, 2012  Diffusion and Osmosis Shown In Solutions Section 1: Abstract This lab, title Diffusion and Osmosis, was centered around the diffusion across a cellular membrane and how exactly materials move and diffuse in concentrations. Both diffusion and osmosis are forms of movement that are part of passive transport dealing with cell membranes. Diffusion is where the solutes move from an area of high concentration to a low concentration. Water goes through the cell membranes by diffusion. Osmosis is...

    Cell, Cell membrane, Cell wall 1308  Words | 3  Pages

  • Diffusion and Osmosis of Solutes and Water Across a Membrane

    Diffusion and Osmosis of Solutes and Water Across a Membrane Brittany Bacallao Nova Southeastern University Abstract: This experiment gave a visual understanding of osmosis and diffusion. The first experiment proved that solutes would move down a concentration gradient if permeable to the selective membrane. The second experiment proved different solute concentrations affect the movement of water, depending on the solute concentration inside the cell. The purpose of this lab was to look for...

    Chemistry, Concentration, Diffusion 2179  Words | 6  Pages

  • Diffusion and Osmosis Lab

    everyday life. Diffusion and osmosis are processes that are a constant in our lives, even though many don’t realize it. Medicaments such as Fervex can be drunk only after diffusion has taken place and the powder granules have diffused into the hot cup of water. On the other hand, every day we become unintentional witnesses of osmosis when the roots of the plants try to suck up the water from the soil (1). The purpose of this lab is to show clearly in an understandable way how diffusion and osmosis happen...

    Absolute zero, Boiling point, Celsius 1512  Words | 5  Pages

  • Experiment 5 Gas Diffusion

    EXPERIMENT 5 GAS DIFFUSION COEFFICIENT OBJECTIVES: Determine the gas diffusion coefficient of acetone using the established Winkelmann’s method KEYWORDS Diffusivity, Gas Diffusion Coefficient, Winkelmann’s method OVERVIEW The knowledge of physical and chemical properties of certain materials is important because very often process engineering deal with the transformation and distribution of these materials in bulk. One such property is diffusivity. Mass transfer by diffusion takes place...

    Diffusion, Evaporation, Gas 1211  Words | 9  Pages

  • Diffusion on a Liquid in a Liquid

    Part A: Diffusion on a liquid in a liquid. I did an experiment with three different glasses of tap water from the faucet. All three cups measured the same which happened to be 13 cm from the top of the cup to the bottom of the cup. I let the water settle, and sit for about an hour so the temperature was the same for all three cups. I then placed one drop of food coloring into the first glass and waited for the coloring to reach the bottom. I calculated 93 seconds. I then went to the second glass...

    Chemistry, Diffusion, Hypothesis 1452  Words | 5  Pages

  • Biology Diffusion Experiment

    effect of concentration of acid on the rate of diffusion in agar blocks? Aim: To investigate how the concentration affects the rate of diffusion of hydrochloric acid through agar blocks Research Question: To determine how will different concentrations (0.1M, 0.2M, 0.3M, 0.4M, 0.5M) of hydrochloric acid affect the rate of diffusion of sodium chloride through agar blocks? Introduction-include prediction; information you have researched before Diffusion refers to the passive movement of molecules along...

    Chlorine, Diffusion, Measurement 769  Words | 3  Pages

  • Factors Affecting Diffusion

    Factors Affecting Diffusion How does temperature affect diffusion? What is Diffusion? Definition 1: Diffusion is a process where by molecules move from an area of high concentration area to an area of low concentration. Definition 2: Diffusion is an evidence for moving particles. The spreading out of a gas is called diffusion and it takes place in haphazard and random way. Gases diffuse because the particles collide with other particles and bounce of in all directions. For example when...

    Boiling point, Celsius, Diffusion 1325  Words | 3  Pages

  • The effect of molecular weight on the diffusion rate

     The effect of molecular weight on the diffusion rates of Potassium permanganate (KMnO4), Potassium dichromate(K2Cr2O7) and Methylene Blue^1 _________________ Group 3 Sec. X-1L February 6, 2012 ____________________ ABSTRACT The effect of molecular weight on the diffusion of substances were tested through the use of agar-water gel with three wells placed in a petri dish. Drops of three different substances namely:...

    Ammonia, Diffusion, Hydrochloric acid 1407  Words | 5  Pages

  • Diffusion and Osmosis Ap Bio

    turned black also because of osmosis. The only thing that the hypothesis lacked was that starch did not move at all. The beaker stayed yellow before and after because the bag is not permeable to starch. 4B- The hypothesis was supported because the diffusion rate was faster shown from the agar blocks. The materials passed through the membrane easily and quickly in the small cells than the large, making them more efficient. The smaller the cell is, the faster it can transport signals. The bigger cell...

    Carbohydrate, Cell, Cell membrane 1371  Words | 5  Pages

  • Science Diffusion Lab

    Biology Lab #1: Chemical Diffusion Purpose To discover how the size of a cell affects the diffusion of chemicals throughout the cell. Hypothesis I predict that as the cell size increases the diffusion depth and the diffusion rate will decrease. Equipment • Eye protection • 250 mL beaker • Timing device • Scoopula • Ruler • Scalpel • Sodium hydroxide solution • 3 different sized cubes of phenolphthalein agar • Paper towels Purpose ...

    Cell biology, Chemical kinetics, Diffusion 466  Words | 3  Pages

  • Salt Diffusion Lab

    Effect of Temperature on Salt Diffusion Rates and it’s Relation to the Human Body Hypothesis: Ordinary table salt is known to dissolve easily in water. Dissolving or diffusion is the spreading of particles in another substance. This is seen when smoke from a chimney diffuses in the air around it, or when dropping coloring in water. When NaCl, sodium chloride, or otherwise known as ordinary table salt is combined with water the separate salt and water molecules will be attracted to each other...

    Celsius, Diffusion, Heat 1017  Words | 4  Pages

  • New Product Adoption and Diffusion

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