Chemistry 223b 2007 Term Test #1 Page 1 Before you start, please ensure that you have entered onto the Scantron: Exam code 111 Student number Official name Section code (001 = Kerr, 002 = Lee) 1. Carbohydrates are found in how many of the following classes of biomolecules? •Glycoproteins •Proteoglycans •Peptidoglycans •Lipopolysaccharides •Nucleic acids (DNA/RNA) A) 4 B) 3 C) 1 D) 2 E) 5 2. How many stereoisomers of aldooctoses are possible?
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Chemistry 223b 2007 Term Test #1 Page 2 3. D-volemulose, shown below, is a sugar involved in the carbon-fixation pathway of plants. Which one of A – E is L-volemulose? HHOOHHOHHOHHCH2OHOCH2OHHHOOHHOHHHOHCH2OHOCH2OHHHOOHHOHHOHHCH2OHOCH2OHHOHOHHOHHHOHCH2OHOCH2OHHOHHOHHOHHOHCH2OHOCH2OHHHOOHHOHHOHHCH2OHOHCHOH