Work Sheet 13

 

Antioxidants (Cobalamin and Folic Acid)

 

1.      Identify the major active oxygen (AO) species and compare their relative reactivities.

 

 

 

 

 

2.      List the harmful actions of AO species in cells.

 

 

 

 

3.      Explain how vitamins C, E and the carotenoids act as cellular antioxidants.

 

 

 

 

4.      Discuss the deficiencies, toxicities and RDA for vitamins C, E and the carotenoids.

 

 

 

5.      Explain how folate is absorbed and transported.

 

 

 

6.      Diagram the function, source, deficiencies and RDA of folic acid and vitamin B12 (cobalamin).

 


Introduction to Nucleotides / Lipids

 

1.      Sketch the structures of adenine, guanine, cytosine, thymine, uracil, AMP, ADP and ATP.

 

 

 

2.      Compare and contrast ribonucleoside and ribonucleotide.

 

 

 

3.      Describe two reactions nucleotides can undergo and discuss their biochemical importance.

 

 

 

 

4.      Discuss the three classes of lipids, their functions and give an example for each.

 

 

 

 

5.      Diagram the formation of a triacylglycerol.

 

 

 

 

6.      Discuss phospholipids, including sphingomyelin, and their importance as lung surfactants.

 

© Sturm 2016

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