Block 3 - Lec 26/27 Flashcards Preview

Dental Biochemistry > Block 3 - Lec 26/27 > Flashcards

Flashcards in Block 3 - Lec 26/27 Deck (35):
1

semi conservative involves the blank strand serving as a template for a new strand

old

2

conservative model is that a new double helix is made from an old blank

double helix

3

dispersive model is when old strand is blank to form multiple new strands

split up

4

during dna replication, you can tell the difference between primer and template strand by noticing that the primer strand has this base

uracil

5

most dna replication in nature is blank directional

bidirectional

6

during replication, these are formed on the discontinuous strand

okazaki fragments

7

dna polymerase that seems to actually do the replication

3

8

theta model of replication involves a blank of dna

ring

9

dna polymerase does proofreading.. when an incorrect base is inserted... a blank activity recognzies the mismatch and changes it out

3' exonuclease

10

dna polymerase 2 is for blank

dna repair

11

dna polymerase blank fills gap after removing rna primer, repairs dna, work with rnaase H

1

12

gaps in dna cannot be fixed by blank, but blank can

dna polymerase, ligase

13

dna polymerase is an assembly of blank

polypeptides

14

replication at both forks results in the blank form

theta

15

where dna replication begins

origin

16

dna polymerase requires a free 3' blank on the primer so we start with blank instead because it is not required

OH, RNA

17

unwinding dna double strand for replication is accomplished by blank

helicase

18

to prevent unwound single strand dna from pairing back up... single strand blank are used

binding proteins

19

dna polymerase 3 is a blank enzyme

holo

20

assists helicase to relieve stress during unwinding

gyrase topoisomerase

21

a very long chromosome must have mutliple blank and undergo blank replication

origins, bidirectional

22

you can start a second replication before blank is done... as in blank

first, e coli

23

four phases of cell cycle

Mitosis, G1 growth, S DNA replication, G2 prepare for cell division

24

although dna replication is semiconservative, histone replication is blank

dispersive

25

uv light can damage dna by forming blank dimers

pyramidine

26

uv pyramidine dimers can be repaired by blank enzyme

photoreactiving

27

having 2 sexes allows for blank

recombination

28

recombination requires mitosis or meiosis

meiosis

29

most recombination occurs by a blank mechanism

break join

30

inhibitors of replication do not necessarily inhibit blank

recombination

31

one copy of each gene

haploid

32

two copy of each gene

diploid

33

dna replication can look blank but it's actually semi conservative with a whole lot of blank

dispersive, recombination

34

endonucleases, ligase, ss binding proteins, dna polymerase are all involved in blank and blank

repair, recombination

35

mesleson stahl came up with the blank model of replication

semi conservative