BIOL110s05-06 - BIOL 110: Principles of Biology Spring 2005...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
1 BIOL 110 : Principles of Biology Spring 2005 Lecture 6, M 1/31/05 Dr. Nathan Staples (Ph.D., UCSB 2002) http://www.smccd.net/accounts/staplesn/biol110/ • Don’t forget to read and prepare Pre-Lab writeups for Mon./Wed. Labs (What? Why? & How? are we doing in the lab?) • QUIZ #1: In labs THIS week!! Review Expt. 2 & questions – Review STARR Ch. 1 (Organization of Life, Properties of Life, Scientific Method) – First ½ of Ch. 2 (atoms, bonds & water) Æ See SELF QUIZ questions. REVIEW: • Ch. 2: The Molecules of Life – chemistry – Atoms = protons, electrons, neutrons – Bonds = ionic, covalent…. TODAY: • Ch. 2: The Molecules of Life – chemistry – Bonds = covalent (polar, nonpolar), hydrogen- – Water – Macromolecules – carbohydrates, lipids, proteins, nucleic acids.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 Polar or Nonpolar Covalent Bonds Nonpolar if atoms share electrons equally – Hydrogen gas (H - H) Polar if electrons spend more time near nucleus with the most protons (unequal sharing) –Eg: Water : – Electrons more attracted to O nucleus than to H nuclei C. Hydrogen Bonding • Atom in one polar covalent molecule is attracted to oppositely charged atom in another such molecule or in same molecule Water molecule Ammonia molecule
Background image of page 2
3
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

This document was uploaded on 03/18/2010.

Page1 / 12

BIOL110s05-06 - BIOL 110: Principles of Biology Spring 2005...

This preview shows document pages 1 - 4. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online