Internet Exercises

University of Akron's chemistry list
(http://ull.chemistry.uakron.edu/genobc/)

At the University of Akron's chemistry list, http://ull.chemistry.uakron.edu/genobc/, click on the animations link and download number 58, replication of DNA.
1. What are the four DNA molecules?
2. Pair up the four DNA molecules.
3. Is DNA a copolymer or a homopolymer?

University of Berlin Chemistry department's index of amino acids
(http://www.chemie.fu-berlin.de/chemistry/bio/amino-acids_en.html)

Go again to Freie University of Berlin's Chemistry department's index of amino acids at http://www.chemie.fu-berlin.de/chemistry/bio/amino-acids_en.html. Click on cysteine.
1. Identify the amino group.
2. Identify the carboxyl group.
3. Draw the dipolar ion of cysteine.
4. If two molecules of cysteine were joined, what is the bond joining them called?

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