Chapter 9 nucleic acids

Chapter 9 nucleic acids - Chapter 9 Nucleic Acids:...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 9 Nucleic Acids: Information storage and Transmission I. Genes are the units of heredity and are made of nucleic acid. (DNA) a. Nucleic acids are polymers of nucleotides linked together by dehydration synthesis reactions. i. Nucleotides are the building block molecules of a nucleic acid and are composed of a sugar, a phosphate group, and a nitrogenous base. ii. The sugar and phosphate groups form the nucleic acid backbone. iii. Nucleic acid backbone has directionality (3’ versus 5’) II. There are two families of nitrogenous bases: a. Pyrimidines i. Pyrimidines are nitrogenous bases characterized by a six-membered ring made up of carbon and nitrogen atoms. b. Purines i. Purines are nitrogenous bases characterized by a five-membered ring fused to a six-membered ring where both rings are made up of carbon and nitrogen atoms. III. Vaccines against bacterial disease a. Can either be a weakened, but living strain of the bacteria that does not cause disease. b.
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 05/04/2010 for the course BIOL 1001 taught by Professor Minor during the Fall '08 term at LSU.

Page1 / 2

Chapter 9 nucleic acids - Chapter 9 Nucleic Acids:...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online