DNA'Replication
Worksheet
DIHECTI(}hlS. Answer the roil owing questions about DNA repJicatlon in ccmpletesentences
1. Why does DNA replIcate?
'
2. Is DNAreplicatlonciesc~be as conservative orsemi~CDnservative? \\lhy?
dunngDNA replication?
3, \Nhat 2 enzymes are used
Descr!bewhafeachdOesdurlng
repHcatiort
,
'
When does DNArepiicationoccurin
4.
a cell?
aoefl?
5, Where does DNArepllcatiolloCcurin
ffthe statement i~Jalse:~~t'lrre:ctthestatemertt.
TruelFal5e-
F - Cyt{)SiIi8, gLi~nine, thyrrriM
r or
Emdad~rljn~arereferredio
asphosohate§..
lor F - DNA<is ttl thE!s,it~pe of a helix.
"
'
Tor F - A nucleotide jsm~deuPofasuoat.ph6sphateandh",1\) nltrooon base~.
"
r or
F-
ReplicatiOnfs
perrormedpriotto
lor F'~ AdenrneaJWays
r or
'
celldivisloft
paTrswfth,g!1anihe.
F~ The sideS of the DNA mOlecule are
T brF~,
The letters thai: make
"
.....
Ton:=:-
Replicatkm
.
UP
.
.
,",
.. ..
.
"
,_''__ ' ~
__ --"
__
~
-'-' __
Two
,
".
strands ofDN.A,eaChofwhi(':h
.
'",
.
,"
has
.
halfofthe orioir"tsi strand.
.
-,"
".
hold nitroge:n bases IDgether, forming the ring~ aftl:-te DNA ladder.
Arrange - PLit thesleps
each statement
"
basM ..!8f1dsua3rs;.
,'.-
",
.'
.
Sentence
up ofrspealingnltroaen
th~bN.1'\ molecule . codefof oenes.
.".
results In tv,tb
Tor'F -Covalentbonds
made
.
..
,".
of DNA rep Heation i'riorder by \vriting a number in tIle spm:::e before
,, ',,', ' ,,,' ", ,
new mnle:Ctlles
of DNA are created.
"
DNApoiyrneraseatiachlhefree-floating
nucleotidesto
iheexposed nifrogen
HeHcase'l:\.eginstobreak
thehydrogen'bon6s'betvveennrtrogen
bases~
Cell starts into the mitosis phase of thecef! cycle,
Free floating huc!eotides'pafrup
wim'ex'p6sedhiifogellbases.
bases.
"
Complete thestalernenf
_-.;."'"........
~...;, guanine, 6ytosine,arid Ihymineare the four nitrogen bases.
In DN/i..,
aiwaysfomis hydrogen btin:asWithguanine
The sequence or ,
carries thegeneUctnformaUon of annfganism
The proCBSS of
produces anew copy otan organism'S genetic informatiDn.
The double coiled shape or DNA iscaHeda _~ __ ~~_--"-~,
DNARep1i(~ation
11'i~
'[l~'lt>r
ph'
,t,"f.lt.
LU_vW.,":"~\l"~t'.
..... '-''-'J,~8
.1..,
(,):tI')J";,t
J'.t.:..
'y" ..t,.;,L.v
l)>> :;"'Y'f'.-,nf
J.
l,."i~":-'l.", r'·'"~li'r'~tj"'n'·
.t:.:J.,.;, n'''''''''-'\' ':.,l...1
..~'l,d.: :t.~.i..r- ""Oi"'l'("l
VJ
......... .J..~.
i)
;); •
,1.,;._~ t.}/_
-.--..-~ Di\ug-hLet st:randsare fOrlt1NtllSillg comµlenU;'T1J:ary bascpail1:ug.
DN/;" !ill'WlnQs
-~~~~ The DNA of the daught.er ,'i,trandswirids tvith together ">'lin iLspar-e1lt. stnthci..
,_C,
"