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Hole's Human Anatomy & Physiology, 9/e
David Shier, Washtenaw Community College
Ricki Lewis, The University at Albany
Jackie Butler, Grayson County Community College

Chemical Basis of Life

Internet Activities


The Periodic Table
(http://wild-turkey.mit.edu/Chemicool/)

This site provides information on the periodic table that includes the groups, periods, valences, electron shells, and characteristic trends.
Question: What are the characteristic trends of the periodic table?
The Learning Matters of Chemistry
(http://www.knowledgebydesign.com/tlmc/tlmc.html)

These interactive chemistry exercises allow the user to visualize atomic orbitals. The 3-D animations are very helpful to the beginning chemistry student. Select "Computer Graphics".
Question: What is the maximum number of electrons that may occupy the "s" and "p" orbitals? Draw Bohr's model of a carbon atom on a piece of paper.
Proteins
(http://esg-www.mit.edu:8001/esgbio/lm/proteins/aa/aminoacids.html)

Structural formulas of the amino acids appear at this site.
Question: On a piece of paper, draw the general structural formula shared by all amino acids. What type of bonds occur between amino acids to form proteins?
Primary through Quaternary Structure
(http://esg-www.mit.edu:8001/esgbio/lm/proteins/structure/structure.html)

The levels of protein structure are discussed and nicely illustrated.
Question: What are the four structural levels of proteins?
Macromolecules
(http://www-medlib.med.utah.edu/NetBiochem/macromol.htm)

This is an excellent introduction to carbohydrates, nucleic acids, and proteins.
Question: On a piece of paper, match the monomer unit with the appropriate macromolecule:

1. Monosaccharide A. Proteins
2. Nucleotide B. Carbohydrates
3. Amino Acids C. Nucleic Acid
Chemical Sciences: Biochemistry: Carbohydrates
(http://webpages.marshall.edu/%7Eadkinsda/b120ch5.htm)

Interesting information on carbohydrates is presented at this site. Monosaccharides, disaccharides, and polysaccharides are discussed.
Question: Name the four classes of compounds that are necessary for living organisms.