Enzymes Flashcards
1
Q
Helicase
A
Unwinds ds DNA for replication
2
Q
Topoisomerase
A
Cuts and unwraps DNA to release tension
3
Q
Primase
A
RNA polymerase that synthesizes primer
4
Q
DNA Polymerase
A
Elongation of daughter strand
5
Q
DNA Ligase
A
Joins Okazaki fragments
6
Q
Nuclease
A
Breaks phosphodiester bonds
7
Q
Exonuclease
A
Moves backward to remove incorrect NTs
8
Q
Endonuclease
A
Makes cuts in the middle of the chain
9
Q
Telomerase
A
Adds repetitive NT sequences at the end of chromosomes
10
Q
Reverse Transcriptase
A
Converts RNA to DNA (retroviruses)
11
Q
Transposase
A
Cut/paste of transpons
12
Q
Ribozymes
A
Catalytic RNA with special functions
13
Q
Inducible Enzymes
A
Default off but turns on with lots of substrate (catabolic enzyme)
14
Q
Repressible Enzymes
A
Default on but can turn on and off
15
Q
B-galactosidase
A
Cleaves lactose into glucose and galactose (lac operon)
