Phospholipids Are Large Organic Molecules with a ________,Polar Phosphate Head

question 31

Multiple Choice

Phospholipids are large organic molecules with a ________,polar phosphate head connected to ________,nonpolar fatty acid tails.How do these molecules arrange themselves to form a mostly impermeable barrier between a liposome and its environment?

• A)hydrophilic;hydrophobic;They line up hydrophilic head to hydrophilic head with the tails all facing outward from the center line of the membrane.
• B)hydrophilic;hydrophobic;They line up hydrophobic tails facing each other at the center line of the membrane with the hydrophilic heads facing outward,away from the center line of the membrane.
• C)hydrophobic;hydrophilic;They line up hydrophobic tails facing each other with the hydrophilic heads facing outward,away from the center line of the membrane.
• D)hydrophobic;hydrophilic;They line up hydrophilic head to hydrophilic head with the tails all facing outward from the center line of the membrane.

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