b1 diffusion

Question 1

What is diffusion?

Answer 1

Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration.

Question 2

True or False: Diffusion requires energy input.

Answer 2

False

Question 3

Fill in the blank: Diffusion occurs in _______ and _______.

Answer 3

liquids, gases

Question 4

Which of the following substances can diffuse through a cell membrane? A) Water B) Glucose C) Proteins

Answer 4

A) Water

Question 5

What factors affect the rate of diffusion?

Answer 5

Concentration gradient, temperature, and surface area.

Question 6

Short answer: Why do smaller particles diffuse faster than larger particles?

Answer 6

Smaller particles have less mass and can move more easily.

Question 7

True or False: Diffusion can occur in solids.

Answer 7

False

Question 8

What is the role of the concentration gradient in diffusion?

Answer 8

The concentration gradient drives the movement of particles from high to low concentration.

Question 9

Multiple choice: Which process is the opposite of diffusion? A) Osmosis B) Active transport C) Filtration

Answer 9

B) Active transport

Question 10

Fill in the blank: The _______ is the area where diffusion occurs.

Answer 10

membrane