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Temperature Exposures: Analyze the Results What temperatures were the most damaging? Why are the temperatures that you selected the most damaging? i.e. How do you know there is damage? Describe a possible mechanism that underlies the damage for each temperature selected. What temperatures were the least damaging or not damaging at all? How can you tell?

Temperature Exposures: Analyze the Results What temperatures were the most damaging? Why are the temperatures that you selected the most damaging? i.e. How do you know there is damage? Describe a possible mechanism that underlies the damage for each temperature selected. What temperatures were the least damaging or not damaging at all? How can you tell?

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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ORGANIC SOLVENT EXPOSURES: The color scale represents subjective assessments with 0 being no color and 6 being intense coloration (red). Test Tube # Treatment Color Intensity 1 1% Acetone 2 25% Acetone 5 3 50% Acetone 4 4 1% Methanol 3 5 25% Methanol 6 50% Methanol 6 Solvent Variant Beet Membrane Disruption 7 6 5 TAcetone 3 IMethanol 2 1 1.00% 25.00% 50.00% Percent Solution 2 |Page Temperature Exposures: Analyze the Results What temperatures were the most damaging? Why are the temperatures that you selected the most damaging? i.e. How do you know there is damage? Describe a possible mechanism that underlies the damage for each temperature selected. What temperatures were the least damaging or not damaging at all? How can you tell? Color Intensity
Transcribed Image Text:ORGANIC SOLVENT EXPOSURES: The color scale represents subjective assessments with 0 being no color and 6 being intense coloration (red). Test Tube # Treatment Color Intensity 1 1% Acetone 2 25% Acetone 5 3 50% Acetone 4 4 1% Methanol 3 5 25% Methanol 6 50% Methanol 6 Solvent Variant Beet Membrane Disruption 7 6 5 TAcetone 3 IMethanol 2 1 1.00% 25.00% 50.00% Percent Solution 2 |Page Temperature Exposures: Analyze the Results What temperatures were the most damaging? Why are the temperatures that you selected the most damaging? i.e. How do you know there is damage? Describe a possible mechanism that underlies the damage for each temperature selected. What temperatures were the least damaging or not damaging at all? How can you tell? Color Intensity
A) Membrane integrity is critical for cell structure and function. In the lab, a useful experimental tool used to illustrate this is the beet root. See below for an image from the Old Farmer's Almanac of the beet (Beta vulgaris), a root vegetable. Credit: Darasp Kran/Shutterstock. Each beet cell has a large central vacuole that stores betacyanin, a reddish pigment. The membrane that serves as the boundary for the vacuole is called the tonoplast and it, like the plasma membrane, is sensitive to damage when exposed to varied environmental conditions. Credit: Slideserve.com. Beetroot cell vacuoles The results below were obtained after exposure of beet root cylinders to varied temperatures and organic solvents. This was done to assess the impact of physical and chemical factors on the integrity of the cellular membranes. Results (From Pockat AP Biology) TEMPERATURE EXPOSURES: Six different temperatures were used (°C) and the color scale represents subjective assessments with 0 being no color and 5 being intense coloration (red). Beets Samples (Color Intensity) Tube # Treatment 1 70 2 55 1 3 40 20 5 6 -5 5 Temperature Variant: Beet Membrane Disruption I Beets I J 4.5 1.5 70 55 40 20 5 -5 Temperature Treated
Transcribed Image Text:A) Membrane integrity is critical for cell structure and function. In the lab, a useful experimental tool used to illustrate this is the beet root. See below for an image from the Old Farmer's Almanac of the beet (Beta vulgaris), a root vegetable. Credit: Darasp Kran/Shutterstock. Each beet cell has a large central vacuole that stores betacyanin, a reddish pigment. The membrane that serves as the boundary for the vacuole is called the tonoplast and it, like the plasma membrane, is sensitive to damage when exposed to varied environmental conditions. Credit: Slideserve.com. Beetroot cell vacuoles The results below were obtained after exposure of beet root cylinders to varied temperatures and organic solvents. This was done to assess the impact of physical and chemical factors on the integrity of the cellular membranes. Results (From Pockat AP Biology) TEMPERATURE EXPOSURES: Six different temperatures were used (°C) and the color scale represents subjective assessments with 0 being no color and 5 being intense coloration (red). Beets Samples (Color Intensity) Tube # Treatment 1 70 2 55 1 3 40 20 5 6 -5 5 Temperature Variant: Beet Membrane Disruption I Beets I J 4.5 1.5 70 55 40 20 5 -5 Temperature Treated
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