Osmosis and Water Potential Explained Through Real-Life Examples

Osmosis and Water Potential Explained Through Real-Life Examples

Assessment

Interactive Video

Biology, Science

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial from biologyexams4u.com explains osmosis in terms of water potential. It begins with defining water potential as the ability of water molecules to move freely in a solution, denoted by the Greek letter psi and measured in megapascals. The tutorial explains that pure water has a water potential of zero, while solutions have negative values. An example is provided with two solutions, A and B, to illustrate the concept. Solution A has high water potential due to fewer solutes, while solution B has low water potential due to more solutes. The video describes how water molecules move from high to low water potential through a semi-permeable membrane, demonstrating osmosis.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary focus of the video tutorial?

The history of biology

The structure of cell membranes

The chemical composition of water

The process of osmosis in terms of water potential

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is osmosis defined in the context of water potential?

Movement of solute molecules through a semi-permeable membrane

Movement of water molecules from high to low water potential through a semi-permeable membrane

Movement of water molecules from low to high water potential

Movement of solute molecules from high to low concentration

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What symbol is used to denote water potential?

Alpha

Omega

Beta

Psi

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the water potential of pure water?

10 megapascals

1 megapascal

0 megapascal

-1 megapascal

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the water potential of cell cytoplasm approximately?

0 megapascal

1 megapascal

-1 megapascal

-10 megapascals

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the unit of water potential?

Megapascal

Pascal

Newton

Joule

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the example with solutions A and B, which solution has higher water potential?

Solution A

Solution B

Neither has water potential

Both have the same water potential

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