Lab # 2 Diffusion & Osmosis Introduction Kinetic energy‚ a root of energy stored in cells‚ causes molecules to hit into each other and move in new directions. Diffusion is the result of this contact. Diffusion is the random movement of molecules to an area of lower concentration from an area of higher concentration. Osmosis is a type of diffusion. This is the diffusion of water through a selectively permeable membrane from a region of higher water potential to a region of lower water
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giving an hour of your day? I wasn’t aware of how many people I can help until there was a blood drive at my high school. The blood drive was run by the ARUP Blood Services and I learned a ton about donating blood. Before you donate you can talk to a representative and learn more about donating blood. I learned that the blood donated can be stored for about 28 days until it goes bad. The phlebotomist told me blood donations are given to several patients who need transfusions to live. If there are many
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one sentence for each resource - water‚ food and oxygen – explain how this resource helps provide power to the human body. Oxygen- Provides energy to all parts of the body along with Glucose Food-Delivers calories and carbohydrates to the body giving it energy Water-allows for hydration and refueling of the blood in our bodies 2. What factors do you think influence how long your body can last without food‚ water or oxygen? Factors of this would include your environment‚ your physical
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two different solutions. Osmosis has a lot to do with this experiment and is the movement of water molecules from a higher concentration to a lower concentration. Osmosis only deals with water and is a type of diffusion. The difference between all three solutions is that in a hypertonic solution the cells fluid rushes out of the cell and causes it to shrivel. In a hypotonic solution water rushes into the cell and causes the cell to expand and eventually pop. In a isotonic solution water rushes in
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The Cell: Transport Mechanisms and Cell Permeability 1. Molecular motion: A and D 2. Velocity of molecular movement: B and C 4. Size of pores. Solubility in the lipid portion of the membrane and/or presence of membrane “carriers” for the substance(s). 5. Glucose- (a) move into the sac Albumin- (c) no movement Water- (b) move out of the cell NaCl- (a) move into the celll 7. Hypertonic- C- crenated Isotonic- B Hypotonic- A- hemolysis‚ bursting open due to swelling
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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
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Management in Blood Banks Harshal Lowalekar and N. Ravichandran Operations Management and Quantitative Techniques Area Indian Institute of Management Indore 18.1 What is Blood? Blood performs many important functions in the human body such as carrying oxygen and nutrients to the various cells and tissues of the body‚ waste removal‚ fighting against diseases‚ regulation of the body temperature‚ regulation of body acidity‚ etc. [1‚ 2]. Blood contains three different kinds of cells: red blood cells (RBCs)
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Practical Work Nº2: “Different methods to control osmosis” Aim: observe and test the process of osmosis through different kinds of methods: the weigh (potato)‚ the density (beetroot) and under the light microscope (onion). Hypothesis: according to the encyclopedia definition osmosis is the diffusion of a liquid (most often assumed to be water‚ but it can be any liquid solvent) through a partially-permeable membrane from a region of high solvent potential to a region of low solvent potential. Thus
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BLOOD 1. The important components of blood include plasma‚ erythrocytes‚ and leukocytes. Red blood cells or erythrocytes account for 45 % of the blood. Leukocytes or white blood cells‚ aid in protecting the body from disease as well as platelets. Platelets function to inhibit excessive bleeding from the body. The plasma layer is another layer that constitutes the majority of blood. 2. The Plasma is straw coloured. It has 90% water‚ 7%proteins and 3% other substances. The Plasma protects the
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Blood Composition. The following are components of blood - red blood cells‚ white blood cells‚ platelets and plasma (the liquid component). Red blood cells are the pinky white circles‚ the white blood cells are the big red blobs. Red blood cells do not have a nucleus because they do not divide and multiply Red blood cells are bi-concave‚ they are donut shaped. Red blood cells contain a pigment called haemoglobin which can react with oxygen to form the unstable compound‚ oxy-haemoglobin. Hb+4O2
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