Passive Transport

Question 1

what is it

Answer 1

Transport which does not require energy

Question 2

3 types of passive transport

Answer 2

Simple
Facilitated diffusion
Osmosis

Question 3

Simple

Answer 3

Movement of molecules across the phospholipid bilayer

• All molecules move around due to kinetic energy

Question 4

Facilitated Diffusion

Answer 4

Small nonpolar molecules (e.g., oxygen, carbon, fat-soluble molecules) can cross the plasma membrane since it is mostly nonpolar.

Water, despite being polar, is small enough to pass through the membrane.

• with the help of transport protein

Question 5

osmosis

Answer 5

Diffusion of water across a selectively permeable membrane.

• LOW solute to HIGH solute

Question 6

For osmosis water can move through the phospholipid bilayer or…

Answer 6

through water specifioc channels called aqauporins

Question 7

Key concept

Answer 7

all these processes require movement DOWN a concentration gradient.

Where molecules move from an area of high concentration to an area of low concentration ( equal

Question 8

Diffusion and facilitated diffusion

Answer 8

refer to solutes

Question 9

osmosis refers to

Answer 9

movement of water and molecules

Question 10

Permeable

Answer 10

Allows substances (like water or gases) to pass through.

Question 11

Impermeable

Answer 11

Does not allow substances to pass through.