friday class

7/24/2019 Friday Class

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Cell Structure

& Function

http://koning.ecsu.ctstateu.edu/cell/cell.html


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Cell Theory

All living things are made up of cells.

Cells are the smallest working units of all

living things. All cells come from preexisting cells

through cell division.


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Definition of Cell

A cell is the smallest unit that is

capable of performing life

functions.


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Examples of Cells

Amoeba Proteus

Plant Stem

Red Blood Cell

erve Cell

Bacteria


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Two Types of Cells

Prokar!otic

"ukar!otic


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Prokaryotic

#o not havestructures surroundedb! membranes

$ew internalstructures

%ne&celledorganisms' Bacteria

http://library.thinkquest.org/C004535/prokaryotic_cells.html


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Eukaryotic Contain organellessurrounded b! membranes

(ost living organisms

Plant Animal

http://library.thinkquest.org/C004535/eukaryotic_cells.html


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Typical Animal Cell

http://web.jjay.cuny.edu/acarpi/!"C/images/cell.gi#


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http://waynesword.palomar.edu/images/plant3.gi#

Typical Plant Cell


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Cell Parts

%rganelles


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%rganelle) *littleorgan+

$ound onl! inside

eukaryotic cells

All the stuff inbetween the

organelles is c!tosol "ver!thing in a cell

except the nucleus isc!toplasm


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Cell "em#rane

%uter membrane of cell

that controls movement

in and out of the cell

#ouble la!er

http://library.thinkquest.org/$%4$3/structures.html


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Boundar! of the cell

(ade of a phospholipidbila!er


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Cell $all

(ost commonl! found inplant cells , bacteria

Supports , protects cells

-ocated outside of the

cell membrane

(ade of cellulose fiber/



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%nsie the Cell


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ucleus

#irects cell activities

Separated from c!toplasm b! nuclear

membrane

Contains genetic material 0 #A

Surrounded b! a double membrane

1suall! the easiest organelle to see under a

microscope 1suall! one per cell


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uclear "em#rane

Surrounds nucleus

(ade of two la!ers

%penings allow

material to enter andleave nucleus



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Chromosomes

2n nucleus

(ade of #A

Contain instructions

for traits ,characteristics



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ucleolus

2nside nucleus

Contains RA to build

proteins



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Cytoplasm

3el&like mixture

Surrounded b! cell membrane

Contains hereditar! material


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Enoplasmic 'eticulum

(oves materials around incell

Smooth t!pe4 lacksribosomes

Rough t!pe pictured/4ribosomes embedded insurface



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'i#osomes

"ach cell contains

thousands

(ake proteins

$ound on ribosomes, floating throughout

the cell



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Rec!cles and

decomposes

proteins' fats' and

carboh!drates


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(ol!i )oies

Protein 6packaging

plant6

(ove materials within

the cell (ove materials out of

the cell



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*ysosome

#igestive 6plant6 for proteins'fats' and carboh!drates

7ransports undigested

material to cell membrane

for removal

Cell breaks down if

l!sosome explodes



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+acuoles

(embrane&bound

sacs for storage'

digestion' and waste

removal Contains water

solution

8elp plants maintain

shape



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Chloroplast

1suall! found in plant

cells

Contains green

chloroph!ll 9here

photos!nthesis takes

place



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Acts as skeletonand

muscle

Provides shape and

structure

8elps move organelles

around the cell

(ade of three t!pes of

filaments

Cytoskeleton


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Centriole

Aids in cell division

1suall! found onl! in

animal cells

(ade of microtubules

Q i k R i


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Quick Review 9hich organelle is the

control center of the cell:

9hich organelle holds the

cell together:

9hich organelles are not

found in animal cells:

9hich organelle helps

plant cells make food:

9hat does ".R. stand for:

ucleus

Cell membrane

Cell wall' central vacuole'

chloroplasts

Chloroplasts

"ndoplasmic reticulum


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Comparing Plant and Animal Cells

Plant Animal

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