Phospholipids role

Question 1

The main component (building block) of cell membranes

Due to the presence of hydrophobic fatty acid tails, a ………… is created when a phospholipid bilayer forms

This acts as a …………….

Answer 1

hydrophobic core

barrier to water-soluble molecules

Question 2

The hydrophilic phosphate heads form ,,,,,, with water allowing the cell membrane to be used to …………
This enables the cells to

Answer 2

H bonds

compartmentalise

This enables the cells to organise specific roles into organelles helping with efficiency

Question 3

Composition of phospholipids contributes to the…….. of the cell membrane

Answer 3

fluidity

Question 4

If there are mainly saturated fatty acid tails then the membrane will be ……. fluid

Answer 4

less

Question 5

If there are mainly unsaturated fatty acid tails then the membrane will be ………….fluid

Answer 5

more

Question 6

Phospholipids control …………

Weak hydrophobic interactions between the ………….. and ,,,,,,,,, hold the proteins within the membrane but still allow ………. within the layer

Answer 6

membrane protein orientation

phospholipids

membrane proteins

movement

Question 7

Phospholipids have 2 charged regions so are

Answer 7

polar