Diffusion and Osmosis: Observing Osmosis in Living Cells – Lab Report – kancarrow
Search
Essays
Sign up
Sign in
Contact us
Tweet
Index
/Science
Diffusion and Osmosis: Observing Osmosis in Living Cells
Kathryn AncarrowFarr AP Biology7.03 Lab Report3/30/17Title: Diffusion and Osmosis: Observing Osmosis in Living Cells.Abstract: The purpose of this lab was to observe diffusion across a cellular membrane and exactly how materials move and diffuse in concentration. Both diffusion and osmosis are forms of movement that are part of passive transport dealing with cell membranes. Potatoes were placed in 6 different sucrose solutions to determine the concertation for an allotted amount of time.Introduction: Diffusion is where the solutes move from an area of high concentration to a low concentration; this is how water flows through cell membranes. Osmosis is specifically the movement of water through membranes. Neither osmosis or diffusion require energy or pumps to work. The process of diffusion also creates different environmental conditions; hypotonic, hypertonic, isotonic. Hypotonic environments occur when the solution has a lower solute concentration compared to the water potential. The hypertonic has a higher solute concentration and lower water potential. Finally, in an isotonic solution, there is no net movement and there is an equal concentration of solutes and water. The potato cores do not shrink because it has a cell wall which supports and maintains a plant cell structure.
Methods: After dicing the potatoes and weighing them they were placed in color-coded sucrose solutions (Red, orange, yellow, green, blue, purple). They remained in the solutions or 30 minutes, were extracted and then weighed again. This measured the rate of osmosis in the plant pieces. Other factors that could change the results would be the moisture in the potato. If the potato was placed in a dry area for several days, it may soak up more water. The materials used for this experiment included potatoes, knife it dice them, balance, ruler, cups, colored- coded solutions. Results: Solution Color Initial Weight (g)Final Weight (g)Percent Change Red 0.7 g0.9 g28.57%Orange 0.7g0.6g-14.28%Green 0.7g0.6g-14.28%Yellow 0.7g 0.6g14.28%Blue 0.7g0.8g14.28%Purple 0.7g0.7g0%In this experiment, the solutions in a hypotonic environment were red, yellow and blue. Those solutions al had final weights that were greater than initial weights. The orange and green colors both had final weights that were smaller than their initial weights, which means they were in a hypertonic environment. The purple color was an isotonic environment because the initial and final weights are the same.
Continue for 1 more page »
Read full document
Download as (for upgraded members)
Citation Generator
MLA 7
CHICAGO
(2017, 04). Diffusion and Osmosis: Observing Osmosis in Living Cells. EssaysForStudent.com. Retrieved 04, 2017, from
“Diffusion and Osmosis: Observing Osmosis in Living Cells” EssaysForStudent.com. 04 2017. 2017. 04 2017 <
"Diffusion and Osmosis: Observing Osmosis in Living Cells." EssaysForStudent.com. EssaysForStudent.com, 04 2017. Web. 04 2017. <
"Diffusion and Osmosis: Observing Osmosis in Living Cells." EssaysForStudent.com. 04, 2017. Accessed 04, 2017.
Essay Preview
By: kancarrow
Submitted: April 14, 2017
Essay Length: 456 Words / 2 Pages
Paper type: Lab Report Views: 662
Report this essay
Tweet
Related Essays
Osmosis Start
Investigate osmosis between potato tissue and sugar solutions. Aim: To investigate the effect of varying concentration of a certain sugar solution on the amount of
420 Words | 2 Pages
Comparative Analysis of Diffusion and Osmosis Rates Under Varying Conditions
Abstract One of the main tasks of a cell is to balance the water and molecules in the cell. This experiment studied the effects of
446 Words | 2 Pages
Diffusion and Osmosis
Diffusion of Ammonium hydroxide with red litmus paper Definition of diffusion 1. Diffusion is the process in which particles move from an area of high
1,904 Words | 8 Pages
Osmosis in onion Cell
The aim of the sixteenth of November experiments was to observe how three different solutions with various sucrose concentration influenced osmosis in relation to three
670 Words | 3 Pages
Similar Topics
Osmosis
Osmosis Potatoes
Get Access to 89,000+ Essays and Term Papers
Join 209,000+ Other Students
High Quality Essays and Documents
Sign up
© 2008–2020 EssaysForStudent.comFree Essays, Book Reports, Term Papers and Research Papers
Essays
Sign up
Sign in
Contact us
Site Map
Privacy Policy
Terms of Service
Facebook
Twitter