Molecule Movement/Membranes

Question 1

Carrier proteins

Answer 1

A protein that takes larger necessary molecules through the membranes

Question 2

Co-transport

Answer 2

A type of active transport that moves two types of molecules across a membrane at the same time

Question 3

Faciliated Diffusion

Answer 3

Transport of polar molecules and ions through diffusion with the help of proteins

Question 4

Isotonic

Answer 4

Have the water concentration as another solution

Question 5

Osmosis

Answer 5

Movement of water from a high water potential to a low water potential

Question 6

Channel proteins

Answer 6

A protein that acts as a tunnel in a membrane to let molecules through

Question 7

Simple diffusion

Answer 7

Movement of a liquid or gas from a high concentration gradient to a low concentration gradient

Question 8

Water Potential

Answer 8

The measure of how concentrated a solution is in terms of water

Question 9

Intrinsic Proteins

Answer 9

Span the whole width of the membrane - help transport substances (channel or carrier)

Question 10

Extrinsic proteins

Answer 10

Confined to either the inner or outer surface of the membrane - are receptors/cell recognition

Question 11

Cholesterol

Answer 11

Type of lipid - controls membrane fluidity (more cholesterol means less fluidity)

Question 12

Fluid Mosaic Membrane

Answer 12

Molecules in a membrane are not chemically bonded to each other (fluid) and they are made up of lots of different types (mosaic)