Questions: 1) What changes do you notice in the final state of the beaker? Initial state Final State 2) Why is there starch indicator solution inside of the dialysis tubing ? 3) Explain why starch did not get out of the tubing into the water in the beaker. 4) What color do you expect to see inside of the dialysis tubing in the beaker? Why? 5) Glucose is a simple sugar substance. Explain how you can determine if it diffused out of the membrane into the water with the starch indicator solution. Extended responses - real-life context and experimental eror 6) In many animals, glucose, rather than starch, is transported by the blood through the body to all the cells. Starches in many foods are digested to yield glucose. Based on what you learned in this laboratory activity, explain why the digestion of starch to glucose is necessary 7) During Part A of this laboratory activity, one group of students followed the directions incorrectly. They poured the Starch Indicator Solution into the "cell" and filled the beaker with starch and glucose solution. State how their results would differ from those obtained by students in their class who followed the directions correctly.

Questions: 1) What changes do you notice in the final state of the beaker? Initial state Final State 2) Why is there starch indicator solution inside of the dialysis tubing ? 3) Explain why starch did not get out of the tubing into the water in the beaker. 4) What color do you expect to see inside of the dialysis tubing in the beaker? Why? 5) Glucose is a simple sugar substance. Explain how you can determine if it diffused out of the membrane into the water with the starch indicator solution. Extended responses - real-life context and experimental eror 6) In many animals, glucose, rather than starch, is transported by the blood through the body to all the cells. Starches in many foods are digested to yield glucose. Based on what you learned in this laboratory activity, explain why the digestion of starch to glucose is necessary 7) During Part A of this laboratory activity, one group of students followed the directions incorrectly. They poured the Starch Indicator Solution into the "cell" and filled the beaker with starch and glucose solution. State how their results would differ from those obtained by students in their class who followed the directions correctly.

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter3: The Plasma Membrane And Membrane Potential

Section: Chapter Questions

Problem 6RE

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Question

Can you do the first 2 question for me please

The experiment
Part A- Model cell
For the first part of the experiment, glucose and starch were placed in a tied dialysis tubing. The
tubing is selectively permeable. The tubing was placed in a beaker with water and starch
indicator solution (iodine) for 20 minutes. Starch is a complex substance and cannot pass
through the membrane, the starch indicator solution is simple and can pass through the
selectively permeable membrane.
Water & Starch Indicator Solution
Water, Glucose, & Starch
Indicator Soution
Yeilowish-brown
Glucose and
Glucose, Starch, &
Srch indicator
Blue-black color
Starch
Solution
Coloriess
Initial State
Final State
Questions:
1) What changes do you notice in the final state of the beaker ?
Initial state
Final State
2) Why is there starch indicator solution inside of the dialysis tubing ?
3) Explain why starch did not get out of the tubing into the water in the beaker.
4) What color do you expect to see inside of the dialysis tubing in the beaker? Why?
5) Glucose is a simple sugar'substance. Explain how you can determine if it diffused out of
the membrane into the water with the starch indicator solution.
Extended responses - real-life context and experimental eror
6) In many animals, glucose, rather than starch, is transported by the blood through the
body to all the cells. Starches in many foods are digested to yield glucose. Based on what
you learned in this laboratory activity, explain why the digestion of starch to glucose is
necessary
students followed the directions
7) During Part A of this laboratory activity, one group
incorrectly. They poured the Starch Indicator Solution into the "cell" and filled the beaker
with starch and glucose solution. State how their results would differ from those obtained
by students in their class who followed the directions correctly.

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