Cell membrane

Question 1

The cell membrane is made up of _______________ layer. this means there is ____ layer of ________.

Answer 1

phospholipid, 2 layers of phospholipid.

Question 2

the phospholipid has a _________ head and _____________ tail

Answer 2

phospholipid has a hydrophilic head and hydrophobic tail

Question 3

why does it has a hydrophilic head

Answer 3

this is because cytoplasm and extracellular liquid contains water

Question 4

integral protein penetrate the ____ cell of membrane

Answer 4

the whole cell of membrane

Question 5

peripheral protein don’t span the whole membrane, as they____

Answer 5

they connect to one surface of the membrane or the the peripheral region of the phospholipid layer (IT DOES NOT PENETRATE THROUGH THE CELL MEMBRANE)

Question 6

main function of cholesterol in cell membrane

Answer 6

it helps add fluidity and maintain membrane cell’s structure integrity and fluidity.

Question 7

why do some integral act as a protein channel

Answer 7

to allow some of the ions to pass through

Question 8

function of membrane proteins

Answer 8

it allow transport across membrane, some are enzymes,which act as a specific receptor for hormones and chemical messengers.