A. hydrophobic fatty acid tails face inside and outside the cell
B. hydrophilic phosphate heads face inside and outside the cell
C. the phospholipids lie end to end phosphate head to fatty acid tail
D. hydrophobic phosphate heads face into each other inside the cell membrane
NOT the phospholipids lie end to end phosphate head to fatty acid tail
NOT hydrophobic phosphate heads face into each other inside the cell membrane
1 answer
The correct answer is:
B. hydrophilic phosphate heads face inside and outside the cell
In a phospholipid bilayer, the hydrophilic (water-attracting) phosphate heads are oriented towards the aqueous environments both inside and outside the cell, while the hydrophobic (water-repelling) fatty acid tails face each other in the interior of the membrane.
