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Biochem 1 Test 3
THe test that I get an A in.
21
Biochemistry
Professional
11/15/2010

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Term
How many types of DNA
Definition
3-A, B, Z
Term
an enzyme that degrades nucleic acids
Definition
nuclease
Term
A cleavage
Definition
hydrolyzes phosphodiester bond at 3' end of DNA
Term
B Cleavage
Definition
hydrolyzws phosphodiester bond at the 5' end of DA
Term
hydrolyzes internal phosphodiester bonds
Definition
endonuclease
Term
hydrolyze from either the 3' or 5' end.
Definition
exonuclease
Term
percentage of rRNA
Definition
75-80%
Term
percentage of tRNA
Definition
10-15%
Term
percentage of mRNA
Definition
5-10%
Term
reverse transcriptase
Definition
uses a single-stranded RNA
viral genome as a template to synthesize DNA (dbl stranded).
Term
capable of self replication
Definition
replicons
Term
Excision-repair
Definition
endonuclease that recognizes
the deformity and nicks the DNA. Polymerase I elongates and removes the damaged DNA
and then DNA ligase covalently re-links the strand.
Term
RNA polymerase binding sites
Definition
promoters.
Term
the only nucleoside triphosphate utilized for ribosomal protein synthesis
Definition
GTP
Term
Difference between Eukaryotic and Prokaryotic sequencing
Definition
Eukaryotes have methionine to initiate translation. Prokaryotes have N-formylmethionine to initiatie translation.
Term
major enzyme that binds to lagging strand
Definition
Helicase
Term
rep protein
Definition
Enzyme that binds to the leading strand of DNA in prepriming stage if DNA replication
Term
Primase
Definition
Synthesizes RNA primers during primer stage of DNA Replication
one of 6/7 polypeptides in the aggregragte-Primose
Term
Enzyme that catalyzes addition of DNA nucleotides to the 3' end of primers
Definition
DNA polymerase III holoenzyme
Term
prerequisite for DNA replication
Definition
RNA synthesis
Term
Enzyme that joins DNA fragments
Definition
DNA ligase
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