d franek cells no yes the smallest living part of organisms
TRANSCRIPT
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D Franek
CELLS
No
YesThe smallest living part of organisms
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Visualizing Cells
Visualizing Cells
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Prokaryotic Cells Earth’s first cells are the simplest life forms exist in two major forms: eubacteria
and archaebacteria Earth’s most abundant inhabitants can survive in a wide range of
environments and obtain energy in a variety of ways
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Prokaryotic Cells
Prokaryotes are cells that lack a nucleus and membrane bound organelles.
Bacteria and blue green bacteria are examples
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Prokaryotic Cells Some use flagellum (a tail)
to move ALL are UNICELLULAR
Bacterial cell wall
Flagellum
Rotarymotor
Sheath
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Prokaryotic Cell
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Eukaryotes vs. Prokaryotes
Eukaryotes– Nucleus &
Organelles
– Linear chromosomes
– Unicellular or multicellular
– Cell wall (plants & fungus)
– Cell membrane (all)
Prokaryotes– No organelles
– Circular chromosomes
– Unicellular or colonial
– Cell wall
– Cell membrane
Includes cells of: Plants, Animals, Fungi& Protists
Includes onlyBacteria
&Blue-green bacteria
Two Major types of Cells
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can be thought of as a "factory,“ with different departments
each performing specialized tasks.
Copyright 1996 Shawn Glynn
Eukaryotic cells
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Eukaryotic cells
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EukaryoteEukaryotes are cells that contain a nucleus and organelles (small parts with functions) surrounded by a membrane, ex: mitochondria and chloroplasts.
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EukaryotesCan be both unicellular or multi-cellular
Organisms with eukaryotic cells are: fungi, plants, animals,protists
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Cell Size - most cells are small because the volume increases more than the surface area transport of materials happens
http://www.cellsalive.com/howbig.htm
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chromosomes
Packaging of genetic materialprokaryote cell
eukaryote cell
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Bacterial Cell
PROKARYOTE
Animal Cell
EUKARYOTE
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Prokaryotic Cells Eukaryotic Cells
Both Basic unit of
LifeAll have:
Cell membraneGenetic material
RibosomesCytoplasm
All have cell wall
Some have
cell wall
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Prokaryotic Cells Eukaryotic Cells
Both Basic unit of
LifeAll have:
Cell membraneGenetic material
RibosomesCytoplasm
All have cell wall
Some have
cell wallUni & multi cellular
Membrane bound organelles
Nucleus
ComplexEvolved laterChromosomes multiple linear Smaller in size
Includes all bacteria Includes animal, plants,
Protists & fungi cells
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_____Unicellular/uni & multi cellular __________ Nucleus/no nucleus _____
_____ Membrane bound organelles/no __________ Simple/complex _____
_____ First on Earth/evolved later __________ Chromosome one circular
Chromosomes multiple linear _____Animal cells _____Plant cells _____
Protists (unicellular animal or plant like organisms) _____Bacteria _____
Blue green bacteria _____Fungi (mold, mushrooms) _____
Smaller in size _____
Name ______________ Date _____ Per ____Practice Use Pro for prokaryotic cell, Eu for eukaryotic cell
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PRO Unicellular / uni & multi cellular EUEU Nucleus / no nucleus PRO
EU Membrane bound organelles / no PRO PRO Simple / complex EU
PRO First on Earth / evolved later EUPRO Chromosome one circular
Chromosomes multiple linear EUAnimal cells EUPlant cells EU
Protists (unicellular animal or plant like organisms) EUBacteria PRO
Blue green bacteria PRO Fungi (mold, mushrooms) EU
Smaller in size PRO
Name ______________ Date _____ Per ____Practice Use Pro for prokaryotic cell, Eu for eukaryotic cell
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Animal Cell
EUKARYOTE
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white blood cell
red blood cell
cheek cellssperm
nerve cell
muscle cell
Amoeba
Paramecium
Different kinds of animal cellsDifferent kinds of animal cells
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Human CellsThere are more than 10 trillion cells,
and over 200 types of cells in the human body, that very greatly in
size, shape, and function!!!
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Animal Cell only -Animal Cell only -OrganellesOrganelles
Near the nucleus Paired structures Help cell divide
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Lysosomes …destroy toxic substances and recycle worn-out cell parts. (contain enzymes)
Animal Cell only -Animal Cell only -OrganellesOrganelles
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Plant Cell
EUKARYOTE
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Onion Epidermal Cells
Root Hair Cell
Guard Cells
Different kinds of plant cellsDifferent kinds of plant cells
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Onion Skin Cell
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Elodea Leaf Cell
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Plant Cells only - Structures
Cell wallMade of cellulose
Strong and rigid
In plant cells only
Protect and supports
Gives shape to the cell
A dead layer
freely permeable
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Plant Cell Structures only
Chloroplasts
-Contain the green pigment chlorophyll
-Traps light energy, (to make food by photosynthesis)
-Contain starch grains (products of photosynthesis)
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In both animal & plant
cells
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Cell membrane– Lies immediately inside the cell wall, gives
shape to the cell– Made of protein and lipid – Selectively permeable– Controls the movement of materials into
and out of the cell
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Cytoplasm -Jelly-like substance within cell membrane, -Gives cell shape-Most chemical reactions take place here-Contains the organelles
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The ER is a continuation of the outer nuclear
membrane, a canal-like system for transport.
Endoplasmic Reticulum
or ER
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The golgi apparatus packages molecules processed by the
endoplasmic reticulum, preparing them to be
transported out of the cell.
Golgi apparatus
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All of the instructions for cell activity are here in the form of chromatin (threadlike DNA responsible for providing the cell with its unique characteristics).
Nucleus – Control Center
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Nucleus
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Nucleolus…produces ribosomes. Some cells can have more than one. Found inside the nucleus.
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•Vacuole
-for storage-especially large
in plants, for water
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Mitochondrion
•Rod shape
•Active cells have more ( eg. sperm, liver cells)
•Energy is made here by Cellular respiration
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Ribosomes use the cell’s genetic instructions to
make proteins.
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Transport system
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SimilaritiesSimilarities between plant cells and animal between plant cells and animal
cellscells
Both have a cell membrane surrounding the cytoplasm
Both have a nucleus
Both contain mitochondria
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Differences Differences between plant cells and animal cellsbetween plant cells and animal cells
Animal cells Plant cells
Have centrioles
Irregular shape
No
No
Regular shape
Cell wall present
Contains chloroplastsNo
Usually one large vacuole
Vacuoles small or absent
Glycogen
as stored food
Starch
as stored food
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Pearson diagram
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The Cell Song
http://www.youtube.com/
watch?v=rABKB5aS2Zg&fe
ature=fvwrel
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atoms (chemical building blocks of all matter) -> molecules (group of atoms with specific properties) -> organelles (structures in cells that perform specific functions) ->
cells (lowest level that exhibits all characteristics of life)-> tissues (groups of specialized types of cells) -> organs (2 or more different tissues, performing a specific function) ->system (group of organs working together for a specific activity) ->organism (living entity) ->
population (localized group of organisms of same species) -> community (interacting populations) -> ecosystems (community interactions including abiotic factors) -> biosphere (world of life)
Hie
rarch
y o
f O
rgan
izatio
n
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Levels of Organization for Multicellular Levels of Organization for Multicellular OrganismsOrganisms
organisms (e.g. man)
cells (e.g. muscle or nerve cells)
tissues (e.g. muscle, epithelium)
organs (e.g. heart, lungs, stomach)
systems (e.g. circulatory system)
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CellsCells• Are the basic units of structure and function in living things.
• May serve a specific function within the organism
• Examples- blood cells, nerve cells, bone cells…
Not
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Tissues Tissues • A group of the same kind of cells which work together to perform a specific activity
• Examples - blood, muscle, bone, nerve…
Not
Humans have 4 basic tissues: connective, epithelial,
muscle, and nerve
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Tissue Type Description Where it is found in the body
Epithelium Cover organ surfaces
Skin, digestive tract
Connective Holds everything together
Blood, bone, cartilate
Muscle Has filaments that contract
Muscles
Nervous Main component of nervous system
Brain, spinal cord
Human Tissues
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Epithelium
Connective
cartilage
Muscle
cardiac
Nervous
central nervous system
Human Tissues
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Type of Tissue Description Where it is found in plant
Meristematic Division of new cells for new growth or repair
Inside plant body
Epidermis Cells forming the outer surface
Cover leaves, plant body
Vascular Transport fluids and nutrients
Inside plant body
Ground Manufactures nutrients by photosynthesis
Center of plant body
Plant Tissues
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OrganOrgan Different tissues group together to carry
out specialized functions Ex:
Heart : (consists of muscles, nervous tissue and blood vessels)
Leaf : (consists of epidermis, mesophyll and vascular tissue)
Not
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Play the organ game at:www.bbc.co.uk/science/humanbody/body/interactives/3djigsaw_02/
index.shtml
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SystemSystem• Several organs and tissues work together to carry out a particular set of functions in a coordinated way
• Examples:
– Human digestive and reproductive systems
– Plant root and shoot systems
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Organism - aka “living thing”
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So…which is more complex?
A cell or an atom?
An organOr a tissue?
A Tissue or an atom?
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SYSTEM
__________ __________ __ __________ work together to carry out a particular set of functions in a ______________________way Give Example: ________________________________________________
ORGAN __________ __________ group together to carry out specialized functions
Give Examples: _____________________________________
TISSUESA group of the _______ _____ of ______ which work together to perform a specific activity
Give Example - _________________________________
CELLS
Are the basic unit of ____________ and ____________ in living things.
May serve a specific function within the organism
Give Example- ____________________________________________________
ORGANISM AKA ________ ______ Give Examples: _________________________
NAME _______________________ CLASS PERIOD _______ DATE ________
CELL ORGANIZATION
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… it is just a protein coat surroundinggenetic material!
VirusIs NOT a cell
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Cell Differentiation Cell specialization occurs during the
development of a multi-cellular organism.
The genetic information necessary for all cellular functions remains in each cell but may not be used.
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