Transcript File

Do Now
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List and define all the life functions
Cell Structures, Functions and
Transport
Objectives:
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2.
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4.
Explain cell theory.
Compare /contrast Prokaryotic and eukaryotic cells.
Identify cell organelles
Differ between animal and plant cells
Definition of Cell
A cell is the smallest unit of life
that can perform ALL the life
functions.
Cell Theory
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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.
Examples of Cells
Amoeba Proteus
Plant Stem
Bacteria
Red Blood Cell
Nerve Cell
Two Types of Cells
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Eukaryotic
•
Prokaryotic
Prokaryotic Cell
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Prokaryotes
– No nucleus
– No membrane bound
organelles
– Unicellular
– Some have cilia (hair-like
structures) and some
flagella (whip-like tail) for
movement.
Example: Amoeba,
bacteria
Eukaryotic Cell
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Contain organelles surrounded by membranes
Most living organisms, (multicellular)
Plant
Animal
Prokaryotes vs. Eukaryotes
Prokaryotes
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No nucleus
No organelles
Bacteria
Much smaller
Unicellular
Cilia
flagella
Amoeba
Eukaryotes
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Nucleus
Organelles
Unicellular (protists)
and multicellular
(animal and plants)
Plant Cell
Animal Cell
http://web.jjay.cuny.edu/~acarpi/NSC/images/cell.gif
Plant Cell
Cell Parts
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Organelles
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little organs inside of a
cell.
They are used to:
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transport of materials
capture and release
energy
Building proteins
waste disposal
Send and receive
information
movement
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Cell membrane
Cell wall
cytoplasm
Nucleus
Chromosomes
Endoplasmic reticulum
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Smooth / rough
Ribosomes
Mitochondria
Golgi bodies
Vacuoles
Lysozome
Chloroplast
Figure 7-5 Plant and Animal Cells
Section 7-2
Go to
Section:
Animal Cell
Eukaryotic Cell Organelles and
Function
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http://library.thinkquest.org/12413/structures.html
Cell membrane
Nickname: “The Fence”
Function:
Controls movement in
and out of the cell
Eukaryotic Cell Organelles and
Function
Nucleus
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Nickname: “The Control
Center”
Function: holds the DNA
Eukaryotic Cell Organelles and
Function
Ribosomes
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Nickname:
“Construction
Workers”
Function: makes
proteins
Found in all cells,
prokaryotic and
eukaryotic
Eukaryotic Cell Organelles and
Function
Endoplasmic
Reticulum (ER)
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Nickname: “Cellular
Highway”
Function: The internal
delivery system of the
cell
Endoplasmic Reticulum
2 Types:
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Rough ER:
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2.
Rough appearance because it
has ribosomes
Function: helps make proteins,
that’s why it has ribosomes
Smooth ER:
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NO ribosomes
Function: makes fats or lipids
Eukaryotic Cell Organelles and
Function
Golgi Bodies
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Nickname: The Post
office
Function: packages,
modifies, and transports
materials to different
locations inside/outside of
the cell.
Appearance: stack of
pancakes
Eukaryotic Cell Organelles and
Function
Lysosomes: circular, but
bigger than ribosomes)
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Nickname: “Cellular
Stomach”
Function: digests food
into small particles the rest
of the cell can use and to
destroy old cells.
Eukaryotic Cell Organelles and
Function
Mitochondria
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Nickname: “The
Powerhouse”
Function: Energy
formation
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Breaks down food to
make ATP
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ATP: is the major fuel
for all cell activities that
require energy
Figure 7-5 Plant and Animal Cells
Section 7-2
Plant Cell
Now let’s talk about structures only found
in PLANT Cells!!
Go to
Section:
Eukaryotic Cell Organelles and
Function
Vacuoles
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Function: stores
water
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This is what makes
lettuce crisp
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When there is no water,
the plant wilts
Found in animal cells
too, but much smaller.
Eukaryotic Cell Organelles and
Function
Chloroplasts
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Function: traps energy
from the sun to produce
food for the plant cell
Green in color because
of chlorophyll, which is a
green pigment
Eukaryotic Cell Organelles and
Function
Cell Wall
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Function: provides
support and protection
to the cell membrane
Found outside the cell
membrane in plant cells
Plant vs. Animal Cells
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Plants
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Cell wall
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Chloroplasts
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Animals
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Cell membrane
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Smaller vacuoles
Large vacuole
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Centrioles- help
organize cell
division.
N/A
N/A
N/A
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Practice questions
Directions: Describe three
differences between the
STRUCTURES of Animal and Plant
Cells. (Do not say one is found in
animals and one is found in
plants!!!!!)
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List the three parts of the
cell theory.
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2_______________________________
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3______________________________