The Cell Organelles Internet Activity
All living things are made of cells. All cells are divided into two basic categories based on
their contents and make up. Prokaryotic cells lack a nucleus and membrane-bound organelles.
All bacteria are prokaryotic. Eukaryotic cells have a nucleus and other membrane-bound
organelles. Protists, fungi, plants, and animals are all eukaryotic. So, what are organelles
anyway? Organelles act as the “organs” to the cell. Each organelle has a specific role or job to
help that cell function. Now you are going to look at the different organelles, mostly found in
eukaryotic cells. As we look at eukaryotic cells, you will need to note the differences between
plant and animal cells. You will also note that not all organelles are membrane-bound, but
they still have a specific function important to that cell. Membrane-bound simply means that
they have a membrane surrounding the entire organelle.
ACTIVITY:
1. Type in www.cellsalive.com
2. Click on Interactive Animal, Plant and Bacterial models
3. Click on Take me to the plant and animal cell animation first
4. Choose Animal cell first
5. Click on each organelle and fill in the info (there are some names that you will NOT need to click
on)
6. After you finish with the animal cell go back and choose the PLANT CELL. Fill in the information
for organelles ONLY found in Plant Cells.
A= found in animal cells P = found in plant cells B = found in both
Nucleus (B)
Nucleolus (B)
*Acts as the
“BRAIN” or
control center
Most ____________ organelle
in any eukaryotic cell. It is
enclosed by a _____________
membrane that communicates
with cytosol through many
nuclear _______________.
It contains ______________
responsible for providing the
cell with its unique
characteristics.
Cytosol/Cytoplasm (B)
“ _______________”
Found inside of the _________
Produces _______________
Mostly made of __________,
but also full of proteins that
control cell _______________.
Cytoplasm is the collective
term for cytosol and ________
_________________________
Centrosome & Centriole (A)
Area where _______________
are produced. The animal cell
centrosome is a pair of
____________________.
Each centriole is a ring of 9
fused ___________________.
They are arranged such that
one is ___________________
to the other.
Golgi (Body/Apparatus) (B)
Stack of membrane-bound
___________________
Lysosome (A)
More common in __________
cells
Important in ______________
macromolecules for transport
elsewhere
Contain ________________
“Post office”
___________________for
intracellular digestion
Packages molecules into
Vesicles.
Aids the cell in cell division
(Secretory) Vesicles (B)
Cell (plasma) Membrane (B)
Mitochondrion (singular) (B)
Packages for substances that
are shipped from the ________
All cells are enclosed by it.
Consists of a double layer of
“Powerhouse” of the cell
_______________________
Provide the ____________, in
the form of ATP, a cell needs
to__________, __________,
Controls what enters and exits
the cell.
_____________, etc…
“the bouncer”
Site of cellular respiration
Vacuole (B)
Cell Wall (P)
Not found in animal cells
Chloroplast (P)
Rigid outermost part of a plant
cell.
Membrane-bound sac playing
a role in ___________
____________ and release of
cellular waste.
___________ in animal cells
___________ in plant cells
and called the central vacuole.
Made of a polysaccharide
Not found in Animal cells
called _______________
Site for photosynthesis
Provides & maintains
___________ and serves as a
protective barrier
Contains green pigment called
Pushes back on vacuole for
In plants, helps regulate
_______________ pressure
___________ pressure.
_____________________
Smooth ER/Rough ER
(endoplasmic reticulum) (B)
Ribosomes (B)
Cytoskeleton (B)
Helps maintain the cell’s
The dots
_______________
SMOOTH:
Network of membranes for the
synthesis, movement, and
modification of ___________
Packets of ____________ &
_______________
Also, allows for the movement
of organelles.
Includes _______________,
Sites of _________ synthesis
ROUGH:
“Pebbled” because of its
surface containing _________
The RER is a network of
membranes for the synthesis,
transport, and modification of
_________________
*not in activity
Flagellum (singular)
Long whip-like or tail-like
structure used to propel a cell
Found in protist cells, sperm,
and some bacteria.
This movement is called
locomotion
________________, and
Each is comprised of _____
subunits
Not membrane-bound; so
can be found in prokaryotic
cells too!!!!
___________________.
Microtubules are long thin
tubes that look like straws
*not in activity
Cilia (plural)
Go back to the pictures of the
whole cell (animal and plant)
and notice what each organelle
looks like in the actual cell.
Shorter hair-like structures
used for locomotion in cells
by constantly beating
Cells are 3D so remember that
your picture is not a true
representation of a cell.
Found in protist cells
Click on Bacteria cell animation at the top
Click on each of the parts of the bacterium and complete the matching section below:
____Nucleoid
____Pili
(singular=pilus)
____Genopore
____Plasmids
____Flagellum
____Capsule
a.
Sometimes referred to as the bacterial chromosome, is a long double strand of
DNA, usually in one large circle. It includes most of the genetic material.
b. Most of the bacterial DNA is found here, along with some RNA and proteins.
Unlike the eukaryotic nucleus, it is not bounded by a membrane.
c. The purpose of this is for motility (or movement). They are long appendages which
rotate by means of a “motor” in the cell envelope. Bacteria may have one, a few, or
many in different positions.
d. This layer of polysaccharide (sometimes proteins) often serves as a protective
barrier against white blood cells.
e. These are hollow, hair-like structures made of protein that allow bacteria to
attach to other cells.
f. These are small circular DNA fragments found in the cytoplasm that contain code
responsible for antibiotic resistance. They are associated with traits that can be
transferred between different bacteria
Review Questions:
Ok…so let’s see what you learned! 
1. What are some differences between plant and animal cells?
Plants have a ________ _______ and __________________ but animals do not.
Animals have ________________ to aid in cell division, but plants do not.
Plant cells have a large _________ ___________, but animals have many small ones.
_______________ are more common in animal cells for intercellular digestion and rarely in plants.
2. Name the organelle/structure
_____________________: associated with protein synthesis and can be free floating
_____________________: has ribosomes and is a network of membranes for the synthesis and movement of
proteins
_____________________: has NO ribosomes and is a network of membranes for the synthesis and movement
of lipids
_____________________: used as locomotion for cells, long and whip-like
_____________________: outermost part of a plant cell that provides structure
_____________________: site of photosynthesis
_____________________: part of the cytoskeleton described as long thin tubes
_____________________: brain or control center containing the cell’s DNA
_____________________: digestive center of the cell which contains strong enzymes
_____________________: post office of the cell responsible for packaging into vesicles
3. Bacteria are prokaryotic, so they do not have a _______________ and membrane-__________
_______________. But, they do have _______________ for protein synthesis.
4. Do bacteria still have DNA?