Answered: 11. On the basis of the indicator test…

11. On the basis of the indicator test for starch what must have happened to the iodine molecules that were originally only in the water in the large test tube?

Curren'S Math For Meds: Dosages & Sol

11th Edition

ISBN:9781305143531

Author:CURREN

Publisher:CURREN

Chapter14: Formula Method

Section: Chapter Questions

Problem 40SST

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Concept explainers

Microbial Isolation

Isolation of the microorganisms in microbiology is the process of developing a pure culture by separating one species of microbe from a mixture of many other species. A pure culture is a culture that contains only one species of microbe.

Question

11. On the basis of the indicator test for starch what must have happened to the iodine molecules that were originally only in the water in the large test tube?

LABORATORY REPORT
Exercise 6: Diffusion and Osmosis
Student anasha MCGOan
Lab Section
Diffusion and Molecular Weight
09,62, 21
8.
Record the diameter of the colored circle on the agar plate after 1 hour.
Potassium permanganate
(molecular weight 158)
Methylene blue
(molecular weight 374)
mm
mm
9. What relationship exists between molecular weight and the rate of diffusion?
Diffusion and Molecular Size
10.
Observe all color changes in the practice test. Record your observations in the space below.
Starch Test
Tube 1 - Starch + l2 KI:
Tube 2 - Tap water + 12 KI
Glucose Test
Tube 1 - 1% glucose + Benedict's (heated):
Tube 2 -0.1% glucose + Benedict's (heated):
Tube 3- Tap water + Benedict's (heated):
On the basis of the indicator test for starch, what must have happened to the iodine molecules that
were originally only in the water in the large test tube?
11.
On the basis of the indicator test for glucose, what must have happened to the glucose molecules
that were originally in the cellulose tubing sac?
12.
13.
Did starch molecules diffuse out of the sac?
How do you know?
List the following in order of decreasing size: perforations in the sac, starch molecules, glucose
molecules.
14.
(S besylomeel
(smallest)
(largest)
Diffusion and Temperature
15.
Record your measurements of the colored areas in the space below.
At freezing:
At room temperature:
16. What evidence do you have that diffusion occurs more rapidly under warmer conditions?
Muscle contractions which move the body depend heavily on diffusion. Why do we have difficulty
17.
moving our fingers, etc. when they are cold?
Osmosis & Diffusion
6-7

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