Passive and active transportation

Question 1

What is passive transportation? What are the three types?

Answer 1

the movement of materials across a cell membrane without the use of energy

Diffusion, osmosis, facilitated diffusion

Question 2

In diffusion (passive transportation), the _______ move from _____ to _____ concentration, to reach __________.

Answer 2

nutrients
high to low
equilibrium

Question 3

In osmosis (passive transportation), the _______ moves from _____ to _____ concentration. This dilutes the solute on the _______ concentration side.

Answer 3

water
low to high
higher

Question 4

Explain what facilitated diffusion (passive transportation) is.
Talk about transport proteins.

In facilitated diffusion, the molecules move from ______ to ______ concentration.

Answer 4

The diffusion of molecules across a membrane by transport proteins. These proteins are embedded in cell membranes and only allow specific molecules through. This helps speed up the process of diffusion.

high to low

Question 5

What is active transportation? What situations is it used for? Which one of these goes against the concentration gradient?

Answer 5

The use of energy to transport materials across the cell membrane.

used for molecules too large to diffuse through the cell membrane

also used to overcome an uneven electric charge–goes against concentration gradient: low to high concentration.

Question 6

What type of structure is used in active transportation?

Answer 6

Protein structure (molecule-specific)