The cell membrane

When we study how polar molecules react in water, we say they are ...

• hydrophilic

• hydrophobic

• neutral

Non-polar molecules are called ..... because they repel (push away) water.

• hydrophilic

• hydrophobic

• neutral

• polar

This molecule is called a:

• cell membrane

• lipid phosphate group

• phospholipid

• cholesterol

The label "A" is indicating to the:

• phosphate tails

• lipid tails

• phosphate head

• lipid head

The label "B" indicates to the:

• Lipid head

• phosphate head

• phosphate tail

• lipid tail

This diagram is called the ...

• phospholipid monolayer

• phospholipid bilayer

• phospholipid trilayer

• phospholipid layer

These molecules can travel through the phospholipid bilayer:

• Large molecules

• small molecules

• polar molecules

• small non-polar molecules

Polar molecules like water has to travel in and out of the cell through the ...

• phospholipid bilayer

• cell membrane

• channel proteins in the cell membrane

• phospholipids in the cell membrane

Phospholipid

• A

• B

• C

Phospholipid bilayer

• A

• B

• C