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Properties of Biomolecules
Concept 3: Lipids
   Practice (1 page)
   Review (4 pages)
Concept 4: Carbohydrates
   Review (4 pages)
Concept 5: Proteins
   Review (9 pages)
Concept 6: Nucleic Acids
   Practice (1 page)
   Review (10 pages)
Concept 6: Nucleic Acids
Nucleic acids, built by polymerizing nucleotides, function primarily as informational molecules for the storage and retrieval of information about the primary sequence of polypeptides.
anatomy of a nucleotide w/AMP


There are two types of nucleic acids:
• Deoxyribonucleic acid (DNA), which serves as a cellular database by storing an immense amount of information about all the polypeptides a cell can potentially make.
• Ribonucleic acid (RNA), which occurs in several different forms (messenger RNA, ribosomal RNA, transfer RNA) and is needed to convert DNA information into polypeptide sequences; in some viruses, RNA serves as the primary database with no DNA involvement; certain RNAs have catalytic ability similar to that of protein enzymes called ribozymes
Nucleic acids are built from subunits called nucleotides. Each nucleotide has three components:

1. a ring-shaped molecule belonging to the class of purine or pyrimidine bases

2. a 5-carbon, or pentose, sugar

3. one or more phosphate groups