A dialysis tubing of 15 mL glucose solution (10%) was tied off and placed into a...
A dialysis tubing of 15 mL glucose solution (10%) was tied off and placed into a 250 mL beaker of water.
Please explain what the direction of movement for each molecule is (glucose and water molecules)?
And which process is used in the movement of each molecule (simple diffusion, facilitated diffusion, osmosis etc)? .
Homework Answers
A glucose solution tubing in a water beaker.
Glucose molecules move from the tube to water (high concentration of glucose to low concentration), the process is simple diffusion.
Water molecules move from the beaker to the tube (From a high water potential to a low water potential), the process is osmosis.
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A dialysis tubing of 15 mL glucose solution (10%) was tied off
and placed into a...
CRITICAL THINKING QUESTIONS 1. A pre-weighed dialysis bag which contained a solution of 10% glucose was...
CRITICAL THINKING QUESTIONS 1. A pre-weighed dialysis bag which contained a solution of 10% glucose was placed in a beaker containing a solution of 20% glucose. After one hour, the bag was weighed again a. Calculate the % mass change of this dialysis bag from the following information: • Mass of bag before experiment: 15.39 • Mass of bag after experiment: 12.79 b. Determine the tonicity of the beaker when it is compared to the dialysis bag: 2. facell had...
In an experiment involving diffusion and osmosis, you are given dialysis tubing, beakers of pure water,...
In an experiment involving diffusion and osmosis, you are given dialysis tubing, beakers of pure water, and 2 solutions: dissolved starch, and diluted iodine. You are told that when starch and iodine come into contact with each other, the starch turns a deep blue-black. Your problem is to find out whether the dialysis tubing is permeable to (lets molecules through) either iodine and/or starch. How could you find out? (Choose the only one of the following possibilities that is accurate.)...
4. The images below represent dialysis tubing suspended in a beaker of diH:0. The black dots...
4. The images below represent dialysis tubing suspended in a beaker of diH:0. The black dots represent sucrose molecules. Label each solution as isotonic, hypotonic on each image to show the direction that the water molecules will move as a result of osmosis. , or hypertonic. State why. Draw arrows
which molecules NaCl, starch or glucose passed through the dialysis tubing into the surrounding solution? which one rema...
which molecules NaCl, starch or glucose passed through
the dialysis tubing into the surrounding solution?
which one remained inside of the dialysis tubing?
which of the molecules passed most rapidly through the tubing?
6. Which molecule(s) (NaCl, starch, or alucose) passed through the dialysis tubing into the surrounding solution? How do you know? 7. Which molecule(s) (NaCl, starch, glucose) remained inside of the dialysis tubing? 8. Which of the molecules passed most rapidly through the tubing? How do you know?
A dialysis bag containing a 20% glucose solution is placed in a beaker containing 10% glucose...
A dialysis bag containing a 20% glucose solution is placed in a beaker containing 10% glucose solution. Should the dialysis bag gain or lose mass after 1 hour in the beaker? Explain your answer.
If you placed a dialysis bag containing NaCl solution, starch solution and glucose solution in a...
If you placed a dialysis bag containing NaCl solution, starch solution and glucose solution in a beaker of water and left it for 30 minutes before testing the water in the beaker for Cr, glucose and starch what results would you expect? Explain your answer TTTF Paragraph v Arial 3(12pt) ET %DOQ 25" fx Mashups BIMMLESS T' T.
Experiment 2: Diffusion Concentration Gradients and Membrane Permeability Data Tables Table 2: Indicator Reagent Data Indicator...
Experiment 2: Diffusion Concentration Gradients and Membrane
Permeability
Data Tables
Table 2: Indicator Reagent Data
Indicator
Starch Positive
Starch Negative
Glucose Positive
Glucose Negative
Glucose Test Strip
n/a
n/a
green
yellow
IKI Solution
dark blue
light brown
n/a
n/a
Table 3: Diffusion of Starch and Glucose Over
Time
Indicator
Dialysis Bag After 60 Minutes
Beaker Water After 60 Minutes
Glucose Test Strip
yellow
green ( if all glucose passed to the beaker from the bag)
IKI
from incolore changed to...
1. (1 pt) Starch, glycogen, and cellulose are all types of: a. Cholesterol b. Carbohydrates c....
1. (1 pt) Starch, glycogen, and cellulose are all types of: a. Cholesterol b. Carbohydrates c. Lipids d. Nucleic Acids e. Protein 2. (1 pt) What are some differences between animal and vegetable fat? 3. (1 pt) What is an essential amino acid? What types of foods contain it? 4. (2 pt) Pick two organelles from the list below and describe their functions. Golgi Nucleus Rough Endoplasmic Reticulum Lysosome Mitochondria Smooth Endoplasmic Reticulum 5. (1 pt) What is the function...
Post-Lab Questions For each of the tubing pieces, identify whether the solution inside was hypotonic, hypertonic,...
Post-Lab Questions For each of the tubing pieces, identify whether the solution inside was hypotonic, hypertonic, or isotonic in comparison to the beaker solution in which it was placed. Which tubing increased the most in volume? Explain why this happened. What do the results of this experiment this tell you about the relative tonicity between the contents of the tubing and the solution in the beaker? What would happen if the tubing with the yellow band was placed in a...
1. Describe the changes in your potato sample when placed in distilled water. Based on these...
1. Describe the changes in your potato sample when placed in distilled water. Based on these changes, was the water hypertonic, isotonic, or hypotonic compared to the cells of the potato? Explain your reasoning in terms of the flow of water into or out of the potato cells. 2, Describe the changes in your potato sample when placed in 0.9% NaCl solution. Based on these changes, was the 0.9% NaCl hypertonic, isotonic, or hypotonic compared to the cells of the...
CRITICAL THINKING QUESTIONS 1. A pre-weighed dialysis bag which contained a solution of 10% glucose was placed in a beaker containing a solution of 20% glucose. After one hour, the bag was weighed again a. Calculate the % mass change of this dialysis bag from the following information: • Mass of bag before experiment: 15.39 • Mass of bag after experiment: 12.79 b. Determine the tonicity of the beaker when it is compared to the dialysis bag: 2. facell had...
4. The images below represent dialysis tubing suspended in a beaker of diH:0. The black dots represent sucrose molecules. Label each solution as isotonic, hypotonic on each image to show the direction that the water molecules will move as a result of osmosis. , or hypertonic. State why. Draw arrows
which molecules NaCl, starch or glucose passed through
the dialysis tubing into the surrounding solution?
which one remained inside of the dialysis tubing?
which of the molecules passed most rapidly through the tubing?
6. Which molecule(s) (NaCl, starch, or alucose) passed through the dialysis tubing into the surrounding solution? How do you know? 7. Which molecule(s) (NaCl, starch, glucose) remained inside of the dialysis tubing? 8. Which of the molecules passed most rapidly through the tubing? How do you know?
A dialysis bag containing a 20% glucose solution is placed in a beaker containing 10% glucose solution. Should the dialysis bag gain or lose mass after 1 hour in the beaker? Explain your answer.
If you placed a dialysis bag containing NaCl solution, starch solution and glucose solution in a beaker of water and left it for 30 minutes before testing the water in the beaker for Cr, glucose and starch what results would you expect? Explain your answer TTTF Paragraph v Arial 3(12pt) ET %DOQ 25" fx Mashups BIMMLESS T' T.
Experiment 2: Diffusion Concentration Gradients and Membrane
Permeability
Data Tables
Table 2: Indicator Reagent Data
Indicator
Starch Positive
Starch Negative
Glucose Positive
Glucose Negative
Glucose Test Strip
n/a
n/a
green
yellow
IKI Solution
dark blue
light brown
n/a
n/a
Table 3: Diffusion of Starch and Glucose Over
Time
Indicator
Dialysis Bag After 60 Minutes
Beaker Water After 60 Minutes
Glucose Test Strip
yellow
green ( if all glucose passed to the beaker from the bag)
IKI
from incolore changed to...
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1. Describe the changes in your potato sample when placed in distilled water. Based on these changes, was the water hypertonic, isotonic, or hypotonic compared to the cells of the potato? Explain your reasoning in terms of the flow of water into or out of the potato cells. 2, Describe the changes in your potato sample when placed in 0.9% NaCl solution. Based on these changes, was the 0.9% NaCl hypertonic, isotonic, or hypotonic compared to the cells of the...
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