export_exam 2 Flashcards

1
Q

What kind of fatty acid would be solid at room temp.?

A

Saturated

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2
Q

Would a saturated or unsaturated biomolecule have the longest retention time under separation by gas chromatography?

A

Saturated

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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

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4
Q

What characteristic(s) best describe the structure of waxes?

A

Long-chain esters

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5
Q

In TLC, the least polar

A

moves the furthest , while the more polar, the less time spent in mobile phase

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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
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7
Q

Why does a longer chain equate with a higher melting point?

A

More dispersion forces

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