Cell Membrane and Transport across Membranes

Question 1

2 main components of cell membranes

Accepted Answer

lipids and proteins

Question 2

4 main functions of cell membranes

Accepted Answer

1. physical isolation 2.regulation of exchange 3. communication 4. structural support

Question 3

membrane lipids create a .... barrier

Accepted Answer

hydrophobic

Question 4

what types of lipids are in the cell membrane

Accepted Answer

sphingolipids, phospholipids, and cholesterol

Question 5

the cell membrane is amphipathic. true or false

Accepted Answer

true. made up of hydrophobic and hydrophilic properties

Question 6

what are micelles?

Accepted Answer

droplets of phospholipids- hydrophilic heads on outside and hydrophobic tails point inward

Question 7

what are liposomes?

Accepted Answer

bilayer of phospholipids with an aqueous center

Question 8

phospholipids and cholesterol together form a...

Accepted Answer

lipid bilayer

Question 9

what does the lipid bilayer function as?

Accepted Answer

barrier bt cytosol and external environment

Question 10

phospholipid and carbohydrates form?

Accepted Answer

glycolipids

Question 11

carbohydrates and proteins form?

Accepted Answer

glycoproteins

Question 12

3 functions of glycolipids and glycoproteins?

Accepted Answer

structural stability, cell recognition, and immune response

Question 13

4 functions of membrane proteins?

Accepted Answer

structural, enzymes, membrane receptors, and transporters

Question 14

2 types of transporter proteins

Accepted Answer

1. channel proteins 2. carrier proteins

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