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Let's look at another example of osmosis. • Remember that animal cells lack a cell wall so they swell, lyse or crenate as the gain or lose water as illustrated by the simulation you just completed that used red blood cells. • Plant cells have a rigid cell wall so they do not change shape as the gain or lose water, but their weight will change as water moves. So, let's look at what happens to potato slices placed in different salt solutions. Slices of potato were weighed and then placed in different salt solutions as pictured. 1% n 5% NoC 10% NeC The potato slices were removed and weighed every fifteen minutes for 60 minutes. After the data collection, the percent weight change for each slice was calculated. This step was necessary since the slices were not all the same size initially. Student data from 6 groups was averaged to ensure a larger sample size. The graph below shows the results. Note that positive numbers indicate weight gain while negative numbers indicate weight loss. • Identify which line represents the % change in weight for the potato in each solution Average % Weight Change in Potato Slices 15 10 DHO -5 1N Nac -10 S% NaCi -15 10% Naci -20 15 30 45 60 Time in Minutes 4. Which solution(s) is(are) isotonic? 1% NaCi 5. Which solution(s) is(are) hypertonic? 5% Nacl and 10% NaCl 6. Which solution(s) is(are) hypotonic? D H20 % Weight Change

Let's look at another example of osmosis. • Remember that animal cells lack a cell wall so they swell, lyse or crenate as the gain or lose water as illustrated by the simulation you just completed that used red blood cells. • Plant cells have a rigid cell wall so they do not change shape as the gain or lose water, but their weight will change as water moves. So, let's look at what happens to potato slices placed in different salt solutions. Slices of potato were weighed and then placed in different salt solutions as pictured. 1% n 5% NoC 10% NeC The potato slices were removed and weighed every fifteen minutes for 60 minutes. After the data collection, the percent weight change for each slice was calculated. This step was necessary since the slices were not all the same size initially. Student data from 6 groups was averaged to ensure a larger sample size. The graph below shows the results. Note that positive numbers indicate weight gain while negative numbers indicate weight loss. • Identify which line represents the % change in weight for the potato in each solution Average % Weight Change in Potato Slices 15 10 DHO -5 1N Nac -10 S% NaCi -15 10% Naci -20 15 30 45 60 Time in Minutes 4. Which solution(s) is(are) isotonic? 1% NaCi 5. Which solution(s) is(are) hypertonic? 5% Nacl and 10% NaCl 6. Which solution(s) is(are) hypotonic? D H20 % Weight Change

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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Let's look at another example of osmosis. Remember that animal cells lack a cell wall so they swell, lyse or crenate as the gain or lose water as illustrated by the simulation you just completed that used red blood cells. • Plant cells have a rigid cell wall so they do not change shape as the gain or lose water, but their weight will change as water moves. • So, let's look at what happens to potato slices placed in different salt solutions. Slices of potato were weighed and then placed in different salt solutions as pictured. 100 ml 100 ml lled Woler 1% nacin 5% Noc 10% NaC The potato slices were removed and weighed every fifteen minutes for 60 minutes. After the data collection, the percent weight change for each slice was calculated. This step was necessary since the slices were not all the same size initially. • Student data from 6 groups was averaged to ensure a larger sample size. The graph below shows the results. Note that positive numbers indicate weight gain while negative numbers indicate weight loss. Identify which line represents the % change in weight for the potato in each solution 6. Average % Weight Change in Potato Slices 15 10 5 ........... DH,0 -5 1% Naci -10 5% Naci 10% Naci -15 -20 15 30 45 60 Time in Minutes 4. Which solution(s) is(are) isotonic? 1% Naci 5. Which solution(s) is(are) hypertonic? 5% Nacl and 10% NaCl 6. Which solution(s) is(are) hypotonic? D H2O % Weight Change •..
Transcribed Image Text:Let's look at another example of osmosis. Remember that animal cells lack a cell wall so they swell, lyse or crenate as the gain or lose water as illustrated by the simulation you just completed that used red blood cells. • Plant cells have a rigid cell wall so they do not change shape as the gain or lose water, but their weight will change as water moves. • So, let's look at what happens to potato slices placed in different salt solutions. Slices of potato were weighed and then placed in different salt solutions as pictured. 100 ml 100 ml lled Woler 1% nacin 5% Noc 10% NaC The potato slices were removed and weighed every fifteen minutes for 60 minutes. After the data collection, the percent weight change for each slice was calculated. This step was necessary since the slices were not all the same size initially. • Student data from 6 groups was averaged to ensure a larger sample size. The graph below shows the results. Note that positive numbers indicate weight gain while negative numbers indicate weight loss. Identify which line represents the % change in weight for the potato in each solution 6. Average % Weight Change in Potato Slices 15 10 5 ........... DH,0 -5 1% Naci -10 5% Naci 10% Naci -15 -20 15 30 45 60 Time in Minutes 4. Which solution(s) is(are) isotonic? 1% Naci 5. Which solution(s) is(are) hypertonic? 5% Nacl and 10% NaCl 6. Which solution(s) is(are) hypotonic? D H2O % Weight Change •..
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