Question

question
what about the phospholipid bilayer prevents fluid from outside the cell from mixing with fluid inside the cell?
select the correct answer below:
the phosphate groups in the center of the membranethe fatty acid sections of the phospholipids on the inside and outside surfaces of the membranethe phosphate groups of the phospholipids on the inside and outside surfaces of the membranethe fatty acid section of the phospholipids in the center of the membrane

Explanation:

• Phospholipids have a hydrophilic (water - loving) phosphate head and a hydrophobic (water - fearing) fatty acid tail.
• The phosphate groups are on the inside and outside surfaces of the membrane (interacting with the aqueous environments inside and outside the cell).
• The fatty acid sections (hydrophobic) are in the center of the membrane. Since water (the main component of the fluids) is polar, it cannot easily pass through the non - polar (hydrophobic) fatty acid section in the center of the membrane, preventing the mixing of the outside and inside fluids.

Answer:

the fatty acid section of the phospholipids in the center of the membrane