Which of the following lipids have positively charged head groups? a) phosphatidyl serine b) phosphatidyl glycerol...
Which of the following lipids have positively charged head groups?
a) phosphatidyl serine
b) phosphatidyl glycerol
c) phosphatidyl choline
d) all of the above
e) none of the above
Homework Answers
The answer is (e) none of the above.
Because:
- (a) Phosphatidylserine (PS) has a negatively charged phosphate head group.
- (b) Phosphatidylglycerol (PG) have one phosphate in its head group and no other groups with compensating positive charges. So the Phosphatidylglycerol have net negative charge.
- (c) Phosphatidylcholine (PC) has head group of positively charged choline group and negatively charged phosphate group and carbonyl groups. So its net charge is neutral.
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