Ch. 1 Review Flashcards Preview

Amino Acids > Ch. 1 Review > Flashcards

Flashcards in Ch. 1 Review Deck (10)
Loading flashcards...
1

Domains of biological classification

Bacteria, eukarya, archaea

2

Covalent bond

Sharing e- pairs between atoms.

*strongest bond

3

Non-covalent bonds

Ionic, H+, and van see Waals

Strongest -------> weakest

4

Hydrogen bond

Largely ionic interactions; H+ is partially shared by two electronegative atoms such as Oxygen and nitrogen

N-~H------N-
N-~H------O-

Also longer than covalent bonds

5

Hydrophobic interactions

No polar molecules that cannot participate in hydrogen bonding or ionic interactions. Water molecules come in contact with these no polar molecules form "cages" around them.

6

1st law thermodynamics

Energy (U) is conserved

7

2nd law of thermodynamics

Entropy = disorder

The total entropy of a system and its surroundings ALWAYS INCREASES for a spontaneous process.

Delta S > 0

8

Equation for delta G?

G= H - TS

9

Meaning of G

If delta G

10

Henderson-Hasselbalch equation

pH= pKa + log [A/HA]