Question
Which of the following describes how phospholipids are positioned in the double layer cell membrane?
a
hydrophobic fatty acid tails face inside and outside the cell
b
the phospholipids lie end to end phosphate head to fatty acid tail
c
hydrophobic phosphate heads face into each other inside the cell membrane
d
hydrophilic phosphate heads face inside and outside the cell
a
hydrophobic fatty acid tails face inside and outside the cell
b
the phospholipids lie end to end phosphate head to fatty acid tail
c
hydrophobic phosphate heads face into each other inside the cell membrane
d
hydrophilic phosphate heads face inside and outside the cell
Answers
GPT-4o mini
The correct option that describes how phospholipids are positioned in the double layer cell membrane is:
**d. hydrophilic phosphate heads face inside and outside the cell**
In a phospholipid bilayer, the hydrophilic ("water-attracting") phosphate heads face the aqueous environments inside and outside the cell, while the hydrophobic ("water-repelling") fatty acid tails face each other, forming the interior of the membrane.
**d. hydrophilic phosphate heads face inside and outside the cell**
In a phospholipid bilayer, the hydrophilic ("water-attracting") phosphate heads face the aqueous environments inside and outside the cell, while the hydrophobic ("water-repelling") fatty acid tails face each other, forming the interior of the membrane.