Exploring Diffusion Through A Membrane Lab

Exploring Diffusion Through A Membrane Lab

Assessment

Interactive Video

Biology

6th - 10th Grade

Practice Problem

Hard

Created by

Sophia Harris

Used 1+ times

FREE Resource

This video tutorial guides students through the New York State Living Environment Lab on diffusion through a membrane. It covers the preparation of dialysis tubing with glucose and starch solutions, chemical testing using indicators, and setting up a wet mount slide for microscope viewing. The tutorial emphasizes safety and accuracy in conducting experiments, providing step-by-step instructions for each part of the lab.

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of using iodine solution in the experiment?

To indicate the presence of starch

To indicate the presence of glucose

To dissolve the starch solution

To clean the dialysis tubing

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is it important to twist and tie the dialysis tubing tightly?

To allow better diffusion

To ensure the solutions do not leak out

To make it easier to handle

To prevent air from entering

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What should you do after filling the dialysis tubing with glucose and starch solutions?

Place it directly in the beaker

Tie off the top of the tube

Heat the tubing

Add iodine solution inside the tubing

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What color should the water in the beaker turn after adding the starch indicator solution?

Red

Amber

Blue

Green

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of using Benedict's solution in the chemical testing?

To test for the presence of starch

To test for the presence of glucose

To clean the test tubes

To neutralize the solutions

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What indicates a positive test result for starch when using iodine?

A yellowish color

A black-blue color

A red color

No color change

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What safety precaution should be taken when placing test tubes in the hot water bath?

Overfill the water bath

Ensure the test tube openings are away from people

Point the test tube openings towards people

Use bare hands to handle the test tubes

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