ell SOTM LAB: B14 12/99 I. TEACHER NOTES & GUIDELINES Title of Lab: Effects of Temperature and Solvents on the Cell Membrane Developers of Lab: Adapted by James Kirby JD726‚ Jennifer Mortellaro JD449‚ and James Prockup JD575 from a publication by the Department of Biological Sciences at Western Michigan University‚ Kalamazoo‚ MI Overview of Lab: Description: The purpose of this lab is to illustrate the effects that temperature and solvents have on the cell
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Title: Ms. K Cell Membrane and Homeostasis Experiment Objective(s): The reason for this experiment is to see how starch and iodine affect each other and how a plastic bag works similar to a membrane in certain situations. Introduction: I know prior to doing this experiment that iodine mixed with starch creates a dark color and that most objects‚ organic and inorganic‚ naturally experience isotonic reactions. Hypothesis: I think that the potato will absorb more starch than the sweet potato and
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LAB 5: Coliform bacteria in surface waters I. Introduction Many organisms‚ including humans‚ have symbiotic bacteria in their guts that aid digestion. Symbiosis is an intimate relationship between different organisms in which both the host organism‚ e.g. the human‚ and the symbiote‚ e.g. bacteria‚ benefit from each other. In this case‚ the bacterium gets a favorable environment and food source in the intestines of a human. In return‚ these bacteria improve the digestibility of food through
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//Ex7_02.cpp //Creating and using boxes #include <iostream> using std::cout; using std::endl; class CBox //Class definition { Public: double m_Length; //Length of box in inches double m_Width; //Width of box in inches double m_Height; //Height of box in inches //Function to calculate volume of boxes double Volume(); { Return m_Length*m_Width*m_Height; } }; int main() { CBox box1; //Declare box 1 of type CBox CBox box2; //Declare box 2 of type
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LADDER DIAGRAM: FIGURE 53 LADDER PROGRAM FOR THE SHIFT AND CLOCK PROGRAM THE SIMULATION OPTION IS SELECTED: Figure 54 SIMULATING THE LADDER PROGRAM ERROR AND DEBUGGING: Once the simulation has started it checks for the errors in the ladder diagram‚ address etc. if there is an error‚ the output cannot be processed until the error is rectified. REMOVING THE DEFECTIVE PRODUCTS: Figure 55 REMOVING THE DETECTED BOTTEL 1 Figure 56 REMOVING THE DEFECTED BOTTLE 2 INPUT
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Solve each of the following problems. Show your solution. 1. A hydraulic lift office chair has its seat attached to a piston with an area of 11.2 cm2. The chair is raised by exerting force on another piston‚ with an area of 4.12 cm2. If a person sitting on the chair exerts a downward force of 219 N‚ what force needs to be exerted on the small piston to lift the seat? Answer: a= 11.2 cm2 A= 4.12 cm2 f= 219 N F= 80.56 N F= fA / a ;
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Name C.W. Lab Section 1 GTA N.C. Station 30 5. Acylation of Ferrocene Post-lab report Fill out the appropriate sections below. Show all work. Your calculated answers need to match the answers in the table and be consistent with significant figures. Results Amounts and units Initial weight of Ferrocene 0.225 g Moles of Ferrocene 1.21 * 10 ^ -3 mol Initial volume of acetic anhydride 1.00 mL Moles of acetic anhydride 0.0110
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beet cell membranes Introduction: Cell membrane is the plasma like substance that separates different organelles and molecules within an organism. The cell membranes vital function is to permit passage of protein and enzymes through their wall. Red beets‚ also known as Beta Vulgaris has a red pigment that is located in its large central vacuoles. It is my hypothesis that if the cell membrane is to experience extreme temperatures‚ then it’s most likely it will affect the membrane. * I hypothesized
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ethanol on the permeability of beetroot cell membranes. Prediction: By exposing a membrane to a solvent‚ ethanol‚ it will increase its permeability. So the higher the concentration of the solvent‚ the more permeable the membrane will be. But if the concentration of the ethanol is beyond a certain limit‚ it may break down the cell membrane to the point where there is in fact no overall effect as the ethanol would disturb the lipids in the membrane. Therefore‚ more of the red pigment in the
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The cell membrane is made up of fats‚ proteins‚ lipids‚ and carbohydrates‚ and is a permeable structure. However‚ this permeation is very discerning because it only lets certain things pass through it. The cell membrane has a layer of phospholipids with hydrophobic ends and hydrophilic tops. The “tails” are made out of phosphate‚ while the “heads” are made up of two strings of fatty acids. There are two layers of these phospholipids‚ called the “bilayer”‚ and the tips of each phospholipid are facing
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