Download Cell

https://www.youtube.com/watch?v=URUJD5NEXC8&feature=player_embedded
Have a
nucleus
Organelle: STRUCTURES inside the
cell; “little organs”
https://www.youtube.com/watch?v=URUJD5NEXC8&feature=player_embedded
Cytoplasm: Gel-like material inside
cells
Cell Membrane: “GATE KEEPER”—
Controls what goes in and out
Clip
NUCLEUS: Directs all cell activities
With the
electron
microscope
NUCLEOLUS: Helps to make protein;
Found inside nucleus
CHROMATIN (aka: DNA):
Found in nucleus; Contains genes or
instructions for cell’s activities
Clip
Under the electron
microscope:
ENDOPLASMIC RETICULUM:
Pathway for moving materials through
cell (the “express-way”); usually close
to the nucleus
RIBOSOMES: Make protein!
Under the electron
microscope:
Clip
A simple diagram
Under the electron
MITOCHONDRIA: Releases energy in
the cell; the “power house”
(generator)
Clip
Under the electron microscope:
CHLOROPLAST: Found in plants
ONLY! Converts sunlight into cell
energy
Under the microscope
CELL WALL: Found in plants only!
Outer structure; made of cellulose
Under the microscope
VACUOLES: Store water,
food, and waste products.
Usually larger in plants!
Under the microscope
GOLGI BODIES: Nicknamed “UPS”—
Packages & secrete substances made
inside the cell
Under the microscope
LYSOSOMES: Digests cell wastes
“garbage disposal”
Clip
What are the two parts
plant cells have that
animal cells do not have?
• Cell Walls
• Chloroplasts
Clip
Prokaryotic vs. Eukaryotic
Prokaryotic
Cells: NO
NUCLEUS
Eukaryotic Cells:
have a TRUE NUCLEUS
Example:
Bacteria
Example: all cells in
your body
What is the difference between
a single cell and cells working
together?
Single Cells do everything by themselves;
Cells in tissues and organs divide up the work!
In many-celled organisms, cells work
together to accomplish their work:
TISSUES:
Cells look ALIKE, perform the
same function.
Examples: MUSCLE TISSUE,
NERVE TISSUE
ORGANS:
A structure made up of different kinds of
TISSUES that all work together to perform
the same JOB.
Examples: HEART, BRAIN,
LUNGS
SIZES AND SHAPES OF CELLS
Cells have different sizes and shapes,
based on their JOB
Some can be very SMALL and some
can be very BIG
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Cell:
Example: Muscle cell
The smallest unit that can perform life functions
Tissue Example: Muscle tissue
similar cells grouped together to do one job
Organ
Example: heart
Two or more types of tissues that work together
Organ system
Example: circulatory system
group of organs that perform a function
Organism Example: human being
a living thing
The Chain of Life
and
Levels of Organization
It all fits
together!
Cell Structures by Brainpop