The Three Means of Transport

Question 1

What is diffusion also known as?

Answer 1

Passive transport

Question 2

What is diffusion (passive transport)?

Answer 2

Substances spread from regions of high concentration to low, until equilibrium is reached so the same concentration is everywhere.

There are two kinds of diffusion;
simple diffusion and facilitated diffusion

Question 3

What is simple diffusion?

Answer 3

Simple diffusion through lipid bilayer ( O2 and CO2 move this way in or out of a cell)

Question 4

What is facilitated diffusion?

Answer 4

Facilitated diffusion through transport proteins (water, fatty acids, glucose, urea)

Question 5

What is active transport?

Answer 5

Energy is expended to move substances from region of low concentration to high concentration. It is through transport proteins (amino acids, and ions)

Question 6

What is no transport?

Answer 6

Large molecules can’t permeate (diffuse) (polysaccharides, protiens, large fat molecules)

Question 7

What are the three means of transport?

Answer 7

Diffusion (Simple and Facilitated)
Active Transport
No Transport