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What is the independent variable of the experiment?

What is the independent variable of the experiment?

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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What is the independent variable of the experiment?
9/28/21 salt) and an equal amount of water as the cell. In this case the water moves equally For example, if you place a red blood cell in pure (distilled) water, it will quickly take up The term isotonic describes a solution which has an equal concentration of solute The term hypertonic describes a solution which has more solute (salt) and less solvent (wcter) than the cell. In this case the cell will lose water. The term hypotonic describes a solution which has less solute (salt) and more Osmosis is the process where water moves across a selectively permeable cell membrane by diffusion. Water moves from the solution with more water to the solution with less water until it bursts. That is why plasma, the liguid portion of our blood is made of water water. The process of osmosis must be tightly controlled by cells, otherwise they will die. In plants, osmosis is just as important, Plants with too little water will wilt. This happens stands upright. The effect of water loss on plant cells is shown in the diagram below. However, after watering the plant, the cells become re-inflated with water and the plant inside the cells and the plant can no longer support itself against the pull of gravity. when water moves out of the cells by osmosis. Without this water there is little pressure with proteins end salts dissolved in it, preventing the unnecessary gain of water by our Osmosis Experiment Background blood cells. solvent (water) than the cell In this case the cell will gain water- into and out of the ell. IŁO H;0 H-O A Figure 1 A. Plant cell placed in pure water. This cell will become inflated because the water outside the cell is at a higher concentration than the water inside the cell, As water moves in by osmosis the vacuole fills up and presses out against the cell wall. B. Plant cell in salt solution equal to the concentration inside the cell. This cell has no overall gain or loss of water because whatever moves out will be replaced by water moving in 47
Transcribed Image Text:9/28/21 salt) and an equal amount of water as the cell. In this case the water moves equally For example, if you place a red blood cell in pure (distilled) water, it will quickly take up The term isotonic describes a solution which has an equal concentration of solute The term hypertonic describes a solution which has more solute (salt) and less solvent (wcter) than the cell. In this case the cell will lose water. The term hypotonic describes a solution which has less solute (salt) and more Osmosis is the process where water moves across a selectively permeable cell membrane by diffusion. Water moves from the solution with more water to the solution with less water until it bursts. That is why plasma, the liguid portion of our blood is made of water water. The process of osmosis must be tightly controlled by cells, otherwise they will die. In plants, osmosis is just as important, Plants with too little water will wilt. This happens stands upright. The effect of water loss on plant cells is shown in the diagram below. However, after watering the plant, the cells become re-inflated with water and the plant inside the cells and the plant can no longer support itself against the pull of gravity. when water moves out of the cells by osmosis. Without this water there is little pressure with proteins end salts dissolved in it, preventing the unnecessary gain of water by our Osmosis Experiment Background blood cells. solvent (water) than the cell In this case the cell will gain water- into and out of the ell. IŁO H;0 H-O A Figure 1 A. Plant cell placed in pure water. This cell will become inflated because the water outside the cell is at a higher concentration than the water inside the cell, As water moves in by osmosis the vacuole fills up and presses out against the cell wall. B. Plant cell in salt solution equal to the concentration inside the cell. This cell has no overall gain or loss of water because whatever moves out will be replaced by water moving in 47
C. Plant cell placed in a salt solution greater than the concentration inside the cell. This cell will lose water as the water moves by diffusion from higher to lower concentration. In this lab activity you will observe the effects of osmosis on plant cells. You will use the weight of cubes of potato to see how much water moves in and out of cells in different salt solutions.
Transcribed Image Text:C. Plant cell placed in a salt solution greater than the concentration inside the cell. This cell will lose water as the water moves by diffusion from higher to lower concentration. In this lab activity you will observe the effects of osmosis on plant cells. You will use the weight of cubes of potato to see how much water moves in and out of cells in different salt solutions.
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