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Biochemistry 1
Nucleotides and Nucleic acids 9/14
9
Chemistry
Undergraduate 4
09/16/2006

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Cards

Term
What are the common pyrimide bases that exist in DNA and/or RNA?
Definition
cytosine, uracil, and thymine
Term
What are the common purine bases?
Definition
adenine and guanine
Term
What is a nucleoside and what are the common nucleosides in RNA?
Definition
It is a nitrogenous base bound to a sugar ring. Some common ones are cytidine, uridine, adenosine, and guanosine.
Term
What is more soluble in water, a nucleic acid or a nuceloside?
Definition
A nucleoside because of the added hydrogen bonding that can occur as a result of the sugar molecule.
Term
What are nucleotides?
Definition
Phosphate modified nucleosides, where a phosphoester linkage is created.
Term
How many H-bonds form between A and T? G and C?
Definition
A:T is 2 bonds, and G:C is 3 bonds.
Term
What is a zwitterion?
Definition
An amino acid creates a neutral charge because of the equal number of positive and negative charges at physiological pH.
Term
The formation of the peptide bond is energetically _____?
Definition
Unfavorable
Term
N-terminus =

C-ternminus =
Definition
Amino end, and carboxyl end
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