Cell Transport Review

How many layers of lipids are found in the cell membrane?

• 1

• 2

• 3

• 4

Which part of the lipid likes the water?

• hydrophilic head

• hydrophobic head

• hydrophilic tail

• hydrophobic tail

Why are the tails in the cell membrane pointing towards the middle of the lipid bilayer?

• they are magnetically attracted to each other

• they are polar

• they are afraid of the water inside and outside the cell

• they love the water inside and outside the cell

Besides lipids, what else makes up the cell membrane?

• carbohydrates

• proteins

• fats

• nucleic acids

Why would a particle use the protein channel to get through the membrane instead of through the lipids?

• it is too big

• it is the wrong shape

• it is too small

• it is polar

What does facilitate mean?

• help

• hurt

• attack

• destroy

Why is the cell membrane referred to as selectively permeable?

• it only allows certain particles through

• it lets all types of particles through

• it only lets large particles through

• it does not let any particles through

What direction do ALL particles want to move?

• high to low

• low to high

When is the type of diffusion referred to as osmosis?

• when water is moving

• when salt is moving

• when sugar is moving

• when particles are moving from low to high

Which type of transport requires energy?

• passive

• osmosis

• facilitated diffusion

• active