Cemist component

706 views
669 views

Published on

Published in: Education, Technology, Business
0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total views
706
On SlideShare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
2
Comments
0
Likes
0
Embeds 0
No embeds

No notes for slide

Cemist component

  1. 1. Secondary Structure <ul><li>non-linear </li></ul><ul><li>3 dimensional </li></ul><ul><li>localized to regions of an amino acid chain </li></ul><ul><li>formed and stabilized by hydrogen bonding, electrostatic and van der Waals interactions </li></ul>
  2. 3. <ul><li>Non-linear </li></ul><ul><li>3 dimensional </li></ul><ul><li>Global, and across distinct amino acid polymers </li></ul><ul><li>Formed by hydrogen bonding, covalent bonding, hydrophobic packing and hydrophilic exposure </li></ul><ul><li>Favorable, functional structures occur frequently and have been categorized </li></ul>HISTORY HISTORY Quaternary Structure KOENIGSBERG CHARACTERISTICS
  3. 4. Polarity <ul><li>Polarity of water molecules a llows them to form hydrogen bonds with each other </li></ul><ul><ul><li>Contributes to four properties of water critical to life processes </li></ul></ul>Hydrogen bonds + + H H + +  –  –  –  – Figure 3.2
  4. 5. Cohesion <ul><ul><li>The bonding of a high percentage of molecules to neighboring molecules </li></ul></ul><ul><ul><li>Helps pull water up through the microscopic vessels of plants </li></ul></ul>Water conducting cells 100 µ m Figure 3.3
  5. 6. Cohesion <ul><li>Surface tension (related to cohesion) is measure of how hard it is to break the surface of a liquid </li></ul>Figure 3.4
  6. 7. A universal solvent <ul><li>Is polar </li></ul><ul><ul><li>Can dissolves salts </li></ul></ul>
  7. 8. Water as a solvent <ul><li>The different regions of the polar water molecule can interact with ionic compounds called solutes and dissolve them </li></ul>Negative oxygen regions of polar water molecules are attracted to sodium cations (Na + ). + + + + Cl – – – – – Na + Positive hydrogen regions of water molecules cling to chloride anions (Cl – ). + + + + – – – – – – Na + Cl – Figure 3.6

×