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5 Questions

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Biology Chapter on Diffusion

Created by

@RevolutionaryCognition

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Questions and Answers

What is the primary driving force behind the movement of particles in diffusion?

Random movement of particles (correct)

Temperature fluctuations

Presence of a membrane

Electrostatic forces

How does an increase in temperature affect the rate of diffusion?

It decreases the kinetic energy of the molecules.

It restricts the movement of molecules.

It increases the size of the molecules.

It increases the rate of diffusion. (correct)

If a substance like alcohol is held in hand, what effect does this have on its diffusion rate?

It decreases the diffusion rate due to external temperature.

It has no effect on the diffusion rate.

It increases the diffusion rate as the substance gains heat. (correct)

It creates barriers that slow down diffusion.

Which of the following factors does NOT affect the rate of diffusion?

<p>Color of the substance</p> Signup and view all the answers

What occurs when particles diffuse down a concentration gradient?

<p>Molecules move from higher to lower concentration.</p> Signup and view all the answers

Study Notes

Diffusion

Movement of particles from an area of high concentration to low concentration.
Driven by random movement of particles.
Movement occurs down a concentration gradient.

Factors Affecting Diffusion Rate

Temperature: Higher temperature increases diffusion rate.
- Higher temperature leads to increased kinetic energy of molecules.
- Example: Holding a tube of alcohol in your hand increases diffusion rate as the alcohol molecules gain heat.

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Description

Explore the principles of diffusion and the factors that affect its rate in this quiz. Understand the movement of particles from areas of high concentration to low concentration, as well as how temperature influences diffusion. Test your knowledge on these essential concepts in biology.