Translation and Transcription Flashcards by Shane Berger

Q

helicase

A

unwinds DNA

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Q

topoisomerase

A

relieves tension

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Q

Primase (RNA Primer)

A

is the RNA primer

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Q

DNA Pol

A

Makes new DNA

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Q

DNA ligase

A

links okazaki fragments

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Q

SSBI (Single stranding binding proteins)

A

keeps DNA apart

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Q

DNA Polymerase can fix mistakes

A

called proofreading

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Q

endonucleases have _____ sequences

A

palindromic (i.e. GCGC) (cuts out specific sequences in DNA errors)

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Q

lac operon

A

inducible system

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Q

trp operon

A

repressive system

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Q

RNA Polymerase I, II, and III (functions?)

A

rmt
I=rRNA
II=mRNA
III=tRNA

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Q

Transcription ends with which three gene mods?

A

5 prime cap
3 poly A tail
splicing

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Q

pi definition

A

pH at which amino acid is neutral

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Q

low pH (amino charge)

A

+ charge

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Q

high PH (amino charge)

A

charge

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Q

acidic aminos (how to find pI)

A

use two lowest pkA values

Q

basic aminos (how to find pI)

A

use two highest pkA values

Q

exonuclease

A

consume from the ends of RNA