Diffusion‚ Osmosis and Active Transport Substances will move through the membrane by diffusion. This is the random spreading out of particles until they are even. For example‚ when you put your instant coffee in boiling water‚ the coffee particles spread out and fill the entire mug‚ this is diffusion. A second way that substances can move through the cell membrane is by osmosis. This is a special type of diffusion where water moves from a high to a low concentration through a ’partially permeable
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pass through the cell membrane while others cannot pass through. 3. What is diffusion and why does it occur? A: The movement of solutes in a solution from high to low concentrations. Diffusion occurs because particles of a substance will move to the less concentrated areas until equilibrium or homeostasis is reached. 4. Compare and contrast diffusion‚ osmosis‚ and facilitated diffusion.
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|Column B | |__E__ term used to describe a solution that has a lower |a. diffusion | |concentration of solutes compared to another solution |b. facilitated diffusion | | |c. osmosis | |__G__
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& Diffusion – Ferris Shaw Research Question: How does the surface area to volume ratio affect the diffusion rate in agar cubes? Hypothesis: The rate of diffusion in directly related to the surface area to volume ratio of cells and is responsible for the efficiency of absorbing nutrients‚ oxygen‚ minerals etc. in the cell. This ratio is specific to cells as they require a ratio that isn’t big enough to take too long to receive the nutrients and oxygen or too small to impair diffusion‚ known
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their own according to natural laws of physics. The three types of passive transport mechanisms include diffusion‚ osmosis‚ and facilitated diffusion. Diffusion is the movement of materials from an area of most concentrated to an area of least concentrated‚ which is equal to moving down a concentration gradient. When the molecules have reached equal concentrations in both locations‚ diffusion ends and it has reached equilibrium. Molecules continue to move‚ but move in both directions equally; there
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Simple diffusion Which Materials diffused from the left beaker to the right beaker? NaCl ‚ Urea ‚ Glucose Which did not ? Albumin Why ? Albumin’s Composition or charge was too great to diffuse through the membrane. After the 2nd activity : Simulating Dialysis What happens to the urea concentration in the left beaker (the Patient)? It diffused to the right beaker Why does this occur? The excess amount must be diffused to reach equilibrium. 3rd exercise :Facilitated Diffusion At
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Diffusion is a way nonvascular plants can get water. It is the movement of molecules from an area of higher concentration to an area of lower concentration until they are equal. An example of diffusion is red food coloring. When you put food coloring in a glass of water the color will spread through the water until all of it is a red tint. This shows the molecules of the food coloring equally distributed in the area of the water. Osmosis is a special type of diffusion where only the water molecules
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out of cells Diffusion: (mixing molecules) Molecules and ions in a liquid or a gas move continuously. The movement is quite random‚ and the particles change direction as they bump into one another. The particles collide more often when they are close together (when they are concentrated) and so they tend to diffuse‚ or spread out‚ until they are spaced evenly throughout the gas or liquid. The random movement of particles is due to their own kinetic energy. When the diffusion happens in living
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Due to the size and polarity‚ only some molecules fit through the pores while others are repelled[3]. The simplest form of movement is diffusion‚ in which solutes move from an area of high concentration to an area of low concentration; diffusion is directly related to molecular kinetic energy[1]. Note that membranes are not in the definition[2]. In diffusion‚ molecules are always moving around‚ so even if
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General Biology I Lab (Bio 104) CRITICAL THINKING ACTIVITY I – Diffusion/Osmosis Name: Tonya Finch What are the 2 tests substances? 1. Potato starch 2. Sugar Water 3. Why did a color change occur in the jar water? Because IKI was added to give it an amber color (gold color). It iodine solution and this caused the color change. 4. What does the color change in #3 indicate? Water and IKI was in jar and the iodine caused the color change of the water. 5. Why did a color change
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