042 tour of the cell
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Part of Biology CampbellTRANSCRIPT
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BIOLOGYCONCEPTS & CONNECTIONS
Fourth Edition
Copyright 2003 Pearson Education, Inc. publishing as Benjamin Cummings
Neil A. Campbell Jane B. Reece Lawrence G. Mitchell Martha R. Taylor
From PowerPointLectures forBiology: Concepts & Connections
CHAPTER 4A Tour of the Cell
odules !." # !.$!
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The !r"est or"!nee is usu!# the nuceus
The nuceus is se$!r!ted from the c#to$!sm %#the nuce!r eneo$e
The nuceus is the ceu!r contro center
' It cont!ins the (N) th!t directs the ce*s!ctiities
4.6 The nucleus is the cells genetic control center
ORGANELLES OF THE ENO!E!"RANES#STE!
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%igure !."
Chromatin
Nucleolus
Pore
NUCLEUS
Two membranes
of nuclear
envelope
ROUGH
ENOPL!S"#C
RET#CULU"
Ribosomes
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The endomem%r!ne s#stem is ! coection ofmem%r!nous or"!nees
' These or"!nees m!nuf!cture !nd distri%ute ce
$roducts
' The endomem%r!ne s#stem diides the ce intocom$!rtments
' Endo$!smic reticuum +E,- is $!rt of theendomem%r!ne s#stem
4.$ O%er%ie&' !(n) cell org(nelles (re rel(te*through the en*o+e+,r(ne s)ste+
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The rou"h E, m!nuf!ctures mem%r!nes
,i%osomes on its surf!ce $roduce $roteins
4.- Rough en*ol(s+ic reticulu+ +(/es+e+,r(ne (n* roteins
$ %
&
'Transport vesicle
bu(s off
Ribosome
Su)archain
Gl*coprotein
Secretor*
+)l*co,- protein
insi(e transportvesicle
ROUGH ER
Pol*pepti(e%igure !.&
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Smooth E, s#nthesi.es i$ids
In some ces/ it re"u!tes c!r%oh#dr!temet!%oism !nd %re!0s down to1ins !nd dru"s
4.0 S+ooth en*ol(s+ic reticulu+ h(s ( %(riet) offunctions
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S"OOTH ER
ROUGH
ERNuclear
envelope
Ribosomes
S"OOTH ER ROUGH ER
%igure !.'
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The Go"i !$$!r!tus consists of st!c0s ofmem%r!nous s!cs
' These receie !nd modif# E, $roducts/ thensend them on to other or"!nees or to the cemem%r!ne
4.12 The Golgi ((r(tus finishes3 sorts3 (n* shiscell ro*ucts
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The Go"i !$$!r!tus
Gol)i
apparatus
.Receivin)/ si(e of
Gol)i apparatus
Transport
vesicle
from ER
Newvesicle
formin)
Transport vesicle
from the Gol)i
Gol)i apparatus
.Shippin)/
si(e of Gol)i
apparatus %igure !.$0
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L#sosomes !res!cs of di"estieen.#mes %uddedoff the Go"i
4.11 L)soso+es *igest the cells foo* (n* &(stes
L0SOSO"E
Nucleus
%igure !.$$(
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L#sosom! en.#mes
' di"est food
' destro# %!cteri!
' rec#ce d!m!"ed or"!nees
' function in em%r#onic deeo$ment in !nim!s
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%igure !.$$B
Rou)h ER
Transport vesicle
+containin) inactive
h*(rol*tic en1*mes-
Gol)i
apparatus
Plasma
membrane
L0SOSO"ES
.2oo(/
En)ulfmentof particle
2oo(
vacuole
i)estion
L*sosome
en)ulfin)
(ama)e(
or)anelle
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L#sosom! stor!"e dise!ses !re heredit!r#
' The# interfere with other ceu!r functions
' E1!m$es2 Pom$e*s dise!se/ T!#3S!chs dise!se
4.1 Connection' A,nor+(l l)soso+es c(n c(usef(t(l *ise(ses
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P!nt cescont!in ! !r"ecentr! !cuoe
' The !cuoe h!s#sosom! !ndstor!"efunctions
4.15 (cuoles function in the gener(l +(inten(nceof the cell
Central
vacuole
Nucleus
%igure !.$3(
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Protists m!# h!e contr!ctie !cuoes
%igure !.$3B
Nucleus
Contractile
vacuoles
' These $um$ out e1cess w!ter
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The !rious or"!nees of the endomem%r!nes#stem !re interconnected structur!# !ndfunction!#
4.14 A re%ie& of the en*o+e+,r(ne s)ste+
Transport
vesiclefrom ER
Rou)hER
Transport
vesiclefrom Gol)i
Plasmamembrane
3acuole
L*sosomeGol)iapparatusNuclear
envelope
SmoothER
Nucleus
%igure !.$!