export_exam 2 Flashcards
1
Q
What kind of fatty acid would be solid at room temp.?
A
Saturated
2
Q
Would a saturated or unsaturated biomolecule have the longest retention time under separation by gas chromatography?
A
Saturated
3
Q
What’s the difference between a reaction that is base catalyzed versus one that is base promoted?
A
- Promoted : the base is consumed.
* Catalyzed : base not consumed
4
Q
What characteristic(s) best describe the structure of waxes?
A
Long-chain esters
5
Q
In TLC, the least polar
A
moves the furthest , while the more polar, the less time spent in mobile phase
6
Q
Compare, contrast micelles and bilayer vesicles
A
Micelles
- Spherical, polar head groups on outside, non-polar tails in the middle
Bilayer - Spherical, but with aqueous solution inside and outside, a layer of non-polar tails are between two layers of polar heads
7
Q
Why does a longer chain equate with a higher melting point?
A
More dispersion forces