Cell membrane

Question 1

what is the cell membrane also called?

Answer 1

the plasma membrane

Question 2

What is the cell membrane also made of?

Answer 2

a phospholipid bilayer

Question 3

the head is made out of what??

Answer 3

phosphate group & alcohol

Question 4

the tails are made out of what?

Answer 4

fatty acid chains

Question 5

another type of lipid in the cell membrane

What does it do?

Answer 5

cholesterol

makes the cell membrane flexible and stronger. its built in the tails & makes the membrane more fliud

Question 6

What is embedded in the phospholipid bilayer and what do they do?

Answer 6

proteins

aid in diffusion and in cell recognition

Question 7

large molecules use what to move across the cell membrane?

Answer 7

large molecules like sugar use proteins

Question 8

where do the large molecules move into or out of the cell membrane? small molecules?

Answer 8

large-proteins

small-phospholipids

Question 9

4 functions of the cell membrane

Answer 9

• expands and contracts
• small molecules go in/out through the phospholipids
• large molecules go out/in through the proteins
• semi permeable

Question 10

attracts water in the cell membrane

Answer 10

phosphate heads

Question 11

helps maintain flexibility of membrane

Answer 11

cholesterol

Question 12

repels water

Answer 12

fatty acid tails

Question 13

make up the bilayer

Answer 13

phosphate heads and fatty acid tails

Question 14

help transport certain materials across the cell membrane

Answer 14

integral proteins