Guys good at Biology / Science, HALP!
Any biologists in the house? What's the answer (serious)
10. Triacylglycerols cannot form lipid bilayers because they
a) have hydrophobic tails
b) lack polar head groups
c) cannot engage in hydrophobic interactions
d) may contain unsaturated fatty acids
Pretentious Music Guru
I believe its B.
Phospholipid bilayers have hydrophobic tails facing inside and polar heads facing outside.
It's B. Triglycerides have three fatty acid tails and thus no polar headgroup to stabilize the outside of the bilayer with (compared to say phosphoglycerides).
Last edited by Fenex; 12-03-2008 at 03:28 PM.
Seems to make sense thanks. Any good at chemistry?
Originally Posted by InnocentThought
13. Which molecule or ion below is amphipathic?
C. The COO is hydrophilic while the CH3 is hydrophobic.
Originally Posted by BlazinBCbud
Hey im polish too
amphipathic = both polar and non polar sections.
So its C, as it is carboxylic ion with a non-polar tail and a polar head which can ion di-pole bond with water.
a is an amino acid, b is water and d is a hydrocarbon.
Thank you very much good sir.
Originally Posted by Fenex
one more chemistry?
At the isoelectric pH of a neutral amino acid with two pKa values, the net charge will be
d) Not enough information to determine