Name
Class
CellStructureandFunction . Readina/Notetakino
Guide
DiscoveringCells(pp.
8o-ss)
This sectiondescribes
Tuhstcellsarc and hontthe inaentionof the fiicroscopeled to
lhc dpdclopmcnt
oJa thearyon ccll,.Thc <?clionol,oexplai;<horr ells of
multicellularorganismsare organized.
UseTargetReadingSkills
As you read,constructaJlowchartshowingho'LL)
the-LLlork
of Hooke,Leeuwenhoek,
Schuann,andVirchowcollttibutedto scienLtfic
Schleiden,
u derstanding
of cells.
DiscoveringCells
Hookeseescellsin cork,
\o€ r:. Sees ftny afgqntsrnt S in
Leeuv.te\''
r a )lt u)4 I'e-^-"ana, Ecra P)n; 3 { ro rn
k.,
L?r"?*!j
i
_'
/839 - Schaqnn cortcL4ded /hq/
Oil
LrA
tht,y1s Qre mqolz uP 4 Cells,
/8s5- Vlfchou) prolaced ths! qll cet-Ls
Qre lornrJ
QYis/ .
onLXfrar^ Cells fh"tf aLrea/V
An OYerviewof Cells (p.81)
1. lvhat aie cells?
ii""are lne
ulLCltt/l
bl ocx: o. &r.
|.1r) )S )rE
4/: )sr\
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Name
Class
CeffStructureand Function . Reading/Notetaking
Guide
FirstObservationsof Cells(pp.81-83)
2.
1 /hat did the invention of the microscope make Dossible?
v)rt 0h
n1tLfDs c oPe
Lt
3. Ar instrument that makes small objectslook larget is a(n)
4. Completethe following tableaboutthe first peopleto observecells.
The Filst People lo Observe Cells
Robert Hooke
Questions
What did he filst look at
with Lhemicroscope?
Anton van Leeuwenhoek
L 4 Ke u) q tar..t
suq PtnA fro,n Tecl+
(.vK cells
o,r,d fia,n Dq +er
1 /hat did he discover?
lle dtse"tare4 4a",
Ce a,/^cs h qfed L:ti';e
L'/'Lle/oonts
Developmentof the CellTheory(p.8a)
5. Is the following sentencetrue or false?Theodor Schwannused only his
own researchto develop the cell theory. f4 454
6. List the three points of the cell theory
a.
*xiu
b.
c.
7. lvhat hformation calr scientistsleam from studyin
per,(orm,
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Class
Date
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Guide
cell Structureand Function . Reading/Notetaking
Discovering CQllskontinued)
andMulticellular(p. 85)
Unicellular
8. lvhat are unicellular and multicellular orqanisms?
tCellular = f)tqt: ttta,A
;2 .r
Gtl,
u Lf lcc l l,e
How are cells organized in most multicellular orqanisms?
-fke, z-etti
rh
tool
tr.t tor* i li c{lJql
otr
is a group o{ similar cellsthat work togetherto
10. A@) / I SSaeperform a specificfunction.
11. tr\hdl ib an orFan?
72. \ o L r r b r a i in, a n
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O fggn-
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Name
Date
Class
Chapier3 CellStructureand Funciion . Section1 Summary
DiscoveringCells
Key Concepts
r Vvhatare cells?
r How did the invention of the microscopecontribute to knowledge about
living things?
r lArhatis the cell theory?
r Hor,rare ther ellsof multiceltularorgani*msorgdniedl
Ali living thingsale madeofcells. Cells are the baEicunits of struclureand
function in living thinBs.Cellscaaryout ihebasicprocesses
of life in similar
\ a y " . M o s t . e l l ( a rleo o 5 m a ltlo b e s e e nw i t h L h en a l e de y e .
The invention of the microecopemade it possiblefor people to
discoverand leam about cells.Oneof the first oeooleto observecellswas
RoberlHoole. h I ool, HooLeob.ervedthe.rruitu re of a thin .Li(eof cork
using a compound microscopehe had built hirrselJ He sawmillions of empty
spaceshe called cells At about the sarnetime, Anton vall Leeuwenhoekbuilt
simple microscopesand used them to observetiny objects.Leeuwenloek
obseived a vanety of moving one-celledorganismsand called them
animalcules
In 1838,MatthiasSchleidenconcludedthat all plants are madeof cells.
The next yeat Theodor Schyr'ann concluded that all animals are alsomade of
cells. In 1855,Rudolf Virchow proposed that new cells are fomed only from
existing cells. Schleiden,Schwann,Virchow, and others helped develop the
cell theory.The cell theory states:All living things are composedof cells;
cells are the basicunit of structureand function in living things; all cells
are producedfrom other cells.Sincecellsale commonto all living things,
they canprovide information about the functions that livmg things perform.
Organisms may be composedof only one cell or ma]ly Lrillions of cells.
Unicellular organisrns,suchasbacteda,are madeup of only onecell.
Multicellular organismsare composedof many cells.
In multicellular organisms,cells are oflen organizedinio tissues,
organs,and organ systems,Atissue is a group of similar cellsthat work
togetherto perform a specificfunction.An olgan is madeup of differenl
kinds of tissuesthat work togetherAn organ system,suchasthe nervous
system,is a group of organsthat work togethet to perform a major function.
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