Question

analyze the data and draw conclus
table 2: diffusion tests
description
step 4: test for diffusion of starch
step 7: test for diffusion of glucose
color of solution in dialysis tube
initial color: clear
color after 15 minutes: black
not observed
color of solution in beaker
initial color: yellow
color after 15 minutes: yellow
initial color: light blue
color after 5 minutes of boiling: red
was there diffusion?
y / n reason:
y / n reason:
analysis:
diffused th
done
both glucose and starch
neither glucose nor starch
only starch (larger molecules)
only glucose (smaller molecules)

Explanation:

Step1: Analyze starch diffusion

The initial color of the solution in the dialysis tube for starch test is clear and it turns black after 15 minutes. The initial color of the solution in the beaker is yellow and remains yellow. This indicates that starch diffused from the dialysis tube into the beaker as the black - color change in the tube is likely due to a reaction with an indicator (like iodine) and the beaker solution didn't change color because starch didn't diffuse into it in significant amounts. So, there was no net diffusion of starch from the beaker to the tube.

Step2: Analyze glucose diffusion

The initial color of the solution for glucose test in the beaker is light - blue and turns red after 5 minutes of boiling. Since boiling is often used to test for the presence of reducing sugars (like glucose) with a reagent (such as Benedict's solution), the color change indicates that glucose was present in the beaker solution after the test. But we have no clear indication of diffusion from the dialysis tube to the beaker as the initial state of glucose in the tube is marked as [Not Observed]. However, based on the color change in the beaker after boiling, we can infer that glucose diffused from the dialysis tube into the beaker.

Answer:

Only glucose (smaller molecules)