FN 225: Nutrition
Noy Rathakette, Ph.D.
Health Professions Division
Lane Community College
Eugene, Oregon

Test Week 3, DUE THURSDAY If you are not able to take it by then, please let me know BEFORE the due date.

Be certain to take and then study the results of the online review quiz in Week 2.

There are about 50 multiple-choice questions on Exam 1 and you will have 60 minutes.  



A FORUM for Week 3
  1. (An early topic- I'll start this Saturday morning of Week 2 and it will be in Week 3)

    STRESS and exams:  For some, the adrenaline secreted during     test-taking sharpens the mind and enhances scores.  But for many, excessive stress interferes with test-taking and clouds the mind, dampening scores.  

    What helps you clear your head so you're thinking at your best while taking a test?

  2. The Lecture material in Week 3 can be difficult, especially for students with little or  no science background.  Is there anything in either Lecture 3A or Lecture 3B that you have comments or questions about?

LECTURE 3A: Chapter 4- part 1
Covalent Bonds
(NOT on Exam 1)

This week's Lectures and Study Questions are not based on the text.   You'll use the text a lot during Week 4.

Have in front of you page 36 in your packet.

Watch this Video Clip first, before going below to the little animated "movie". 

As you watch it, focus on what it says about
atoms,
outer shells and
FULL outer shells. 

As I said above, most atoms do not have FULL outer shells.  Without a FULL outer shell, they are looking for electrons to fill their outer shell so they can be stable.  Once they combine with other atoms to complete their outer shell, they are then part of a molecule.

Video Clip: Introduction to Covalent Bonds
about 6 minutes
If an approximately 6-minute movie isn't showing up just above on your computer, you may not have the latest version of QuickTime on your computer.  Click here to download the newest version of Quick Time.



The Study Questions this week include some about a tiny animated "movie" I did back in the late nineties before I knew anything about posting online.  

You can watch the following  "movie"
  • at home or other locations where you use the Internet
  • at one of the computers in the Library (Main Campus)
  • one of the LCC Instructional Computing Labs  HOURS: http://www.lanecc.edu/icl/labhours.htm

Why this movie?  When a plant makes glucose by photosynthesis, it captures the sun's energy in the bonds that join the atoms of carbons in glucose.  The purpose of this movie to explain what bonds are.

The "movie" shows the formation of ethyl alcohol.  The energy in that molecule can be found in the molecule's bonds, particularly the bonds between the carbon atoms.

As you watch it, focus again on what it says about
atoms,
outer shells and
FULL outer shells. 

As I said above, atoms that I'm familiar with do not have FULL outer shells when they are single atoms.  Without a FULL outer shell, they are looking for electrons to fill their outer shell so they can be stable.

The Path to Inner Peace
A "movie"about covalent bonding.

Thanks to Ken Loge for enabling this to run on the Web. 

This little movie requires the plugin Shockwave which works fine on Windows-based  computers using Internet Explorer as your browser.

It does NOT seem to work on Macs with either Firefox or Safari as your browser.  

But it DOES seem to work on a Mac if you have Internet Explorer on your Mac.

I will give you two options for viewing it so if the first doesn't work, try the second option. 

  1. Click here for the first (best) option to get the movie.
    On Macs, this option may only work if you're using Internet Explorer as your browser.

    (Once you get to the "movie", if the screen doesn't tell you this, click on it to advance.)

  2. Click here if you have trouble installing Shockwave to view this movie or if you have any other difficulties.