Osmosis Rates in Artificial Cells Daniel George Department of Biology Grand Valley State University 1 Campus Drive Allendale‚ MI 49401 georged@mail.gvsu.edu Abstract The lab for this paper was conducted for the topic of osmosis‚ the movement of water from high to low concentration. Five artificial cells were created‚ each being filled with different concentrated solutions of sucrose. These artificial cells were placed in hypertonic‚ hypotonic‚ or isotonic solutions for a period of 90
Premium Osmosis Diffusion Semipermeable membrane
Foster Professor Ray Ramirez BIOL 2420 December 5‚ 2014 Tuberculosis: Leading Disease Killer in the World Microbes orbit the world that is around us involving being in the air and on surfaces we may come in close contact with. In the medical terms‚ microbiology involves the study of microscopic organisms‚ bacteria‚ archaea‚ fungi‚ protozoa‚ algae‚ and multi cellular animal parasites (Baumann 3-5). It is important that we acquire knowledge of these subjects because there are many infectious diseases that
Premium Tuberculosis
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
Premium Osmosis Cell wall
The results that were collected in lab #1 shows the relationship of surface areand volume in the artificial cells to the diffusion rate using the phenolphthalein-NaOH agar and the HCl solution. Lab #2 was a model of diffusion and osmosis‚ in which we filled the model cells with different solutions and determined the rate of diffusion. In lab #3‚ the results demonstrated the interactions between selectively permeable membranes‚ water‚ and solutes and how they are important in cellular and organismal
Premium Osmosis Chemistry Diffusion
Osmosis is the movement of water from an area of high concentration to an area of low concentration across a semi permeable membrane. An osmotic system is established when a semi-permeable membrane is placed between two solutions. In this biological systems context‚ osmosis is the exchange of water between the potato cell and the surrounding medium of varying sucrose concentrated solutions‚ with the plasma membrane being the semi- permeable membrane. Because water molecules have kinetic energy‚ they
Premium Osmosis Concentration Diffusion
Bylaws by Laws (Laws that are often Violated by Fraternity Initiations) I. Introduction Thesis statement: Fraternities are bad. Background: The recent news about hazing deaths‚ cause mass uproar from parents that want their children to go to school without fear of their children dying. II. Body: 1. Criminally Negligent Manslaughter 2. Universal Declaration of Human Rights: Article 5 3. Republic Act No. 8049 III. Conclusion:
Premium Human rights
EEG Motor Planning Study - Alternative Credit Option Questions Please read the article provided about neural synchrony and cognitive dysfunction. Email a typed response in this document to the questions listed below. 1) Explain the reasons why neural synchronization might be an important mechanism in the brain related to perception and thinking. Support your answer with two experimental examples discussed in the article. Neural synchrony is associated with cognitive functions that require
Premium Brain Psychology Nervous system
Digital Balance used to measure the mass of the potato strip before and after osmosis. Time should be kept constant when the potato strip is put into the solution Hypothesis: The mass of the potato strip will increase in water and dilute concentrations of sucrose depending on the concentration within the cell. When the concentration of the sucrose solution outside the cells of the potato strip will be less‚ the mass of the solution will increase as water molecules from outside will diffuse into
Premium Concentration Water Chemistry
Colors of Food Coloring Are Soaked into a Naked Egg‚ Will the Mass Change Depending on the Color of the Ink after 7 Days? The Purpose The purpose of initiating this lab was to test how different chemicals in the outer fluid affects the osmotic properties of a naked egg. Background Information In order to complete this experiment‚ one of the most important things you need to know how to do is how to take the outer “shell” layer off of the egg. The egg shells contain an element known as calcium carbonate
Premium Bacteria Chemistry Osmosis
Microbiology in odontogenic infections Most odontogenic infections contain mixed aerobic and anaerobic bacteria. predominant bacterial species present in oral cavity are maunly Streptococcus ‚ Peptostreptococcus‚ Veillonella‚ Lactobacillus‚ and Actinomyces . 11‚12 The mixed aerobic-anaerobic composition of the bacteria involved in suppurative odontogenic infections is thought to be important in the pathogenesis of infection. if bacteria involved in mixed odontogenic infections are isolated in pure
Premium Bacteria Microbiology Antibiotic resistance