{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Lecture 02 2B03 2017.pptx - Lecture 2 Nucleotides and...

Info iconThis preview shows pages 1–10. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture 2 Nucleotides and Nucleic Acids Part I
Background image of page 1

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

View Full Document Right Arrow Icon
4 Essential Questions to Remember What are the structures of the nucleotides? How are nucleotides joined together to form nucleic acids? How is information stored in nucleic acids? What are the biological functions of nucleic acids?
Background image of page 2
Information Transfer in Cells Fundamental process of information transfer in cells. Information encoded in a DNA molecule is transcribed via synthesis of an RNA molecule The sequence of the RNA molecule is "read" and translated into the sequence of amino acids in a protein
Background image of page 3

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

View Full Document Right Arrow Icon
Chemical Structures of Nitrogenous Bases Pyrimidines (Py) Cyt osine (DNA, RNA) Ur acil (RNA) Thym ine (DNA) Purines (Pu) Aden ine (DNA, RNA) Guan ine (DNA, RNA) Underlined is the root of each name
Background image of page 4
Purines and Pyrimidines (a) Pyrimidine ring and (b) purine ring systems; atoms are numbered as indicated please memorize . Carbon (C)
Background image of page 5

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

View Full Document Right Arrow Icon
Three Pyrimidine Bases Chemical structures of cytosine, uracil, and thymine please memorize.
Background image of page 6
Two Purine Bases The common purine bases – adenine and guanine please memorize .
Background image of page 7

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

View Full Document Right Arrow Icon
Chemical Structures of Nucleosides Nucleosides are compounds formed when a base is linked to a sugar via a Glycosidic Bond The sugars are pentoses (5 Carbon based) D-ribose (in RNA) 2-deoxy-D-ribose (in DNA) The difference - 2'-OH vs 2'-H This difference affects secondary structure and stability
Background image of page 8
Ribose (in RNA) The linear and cyclic (furanose) forms of ribose.
Background image of page 9

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

View Full Document Right Arrow Icon
Image of page 10
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}