General
Background
Tetra
Environment
Characteristics ASSET
Labs and
of Tetra
Tetra
ASSET Lab
Equipment
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Final Jeopardy
Tetrahymena is a ______ cell,
meaning it has a membrane-bound
nucleus and organelles.
What is a Eukaryote?
This is the Kingdom that
Tetrahymena belong to.
What is Protista?
This is the term used to describe
something that DOES NOT cause
disease. It is also one of the reasons
Tetrahymena is a safe organism to use
in classrooms.
What is non-pathogenic?
Like other living things,
Tetrahymena perform these three
basic functions…
What are eat, reproduce, and
respond to their environment?
In 2009, this award was given
to scientists doing research on
telomeres using Tetrahymena.
What is the Nobel Prize?
Tetrahymena are found mostly
in this type of water…
What is fresh water?
This is Tetrahymena’s food of
choice, another reason why they
are an excellent classroom
organisms for non-sterile
environments.
What are bacteria?
Like all organisms, Tetrahymena
___________, for limited resources
in their environment.
(Charles Darwin identified this as a
basic biological concept)
What is compete?
Depending on environmental
conditions, certain strains of
Tetrahymena can go _______,
meaning they eat their own species.
What is Cannibalistic?
When Tetrahymena go
cannibalistic, the cannibals
form one of these, which
means, “Big Mouth”.
What is a macrostome?
Tetrahymena belong to this group
of Protozoans, meaning they
have cilia.
What are Ciliates?
This is the term used to
describe how Tetrahymena
eat. It means “to devour” a
particle when feeding.
What is Phagocytosis?
“Fat”, “Balloon” and
“Mouthless” are three different
______________ that are
expressed when Tetrahymena are
exposed to increased
temperature.
(37 degrees C)
What are Mutations?
One of the ASSET Modules allows student
to create microcosms where they mix one
of Tetrahymena’s favorite bacteria with the
Tetrahymena. Bacteria that are able to
survive by filling different niches produce
visibly different colonies. The selection
pressure causing this is?
What is Predation?
Humans have 2 sexes. How
many sexes do Tetrahymena
have?
What are Seven (7)?
These are structures found on
the outside of Tetrahymena
used for both movement and
feeding.
What are Cilia?
This is the shape that Tetrahymena form
when they are sexually reproducing.
Also, a common term for a throwing
device traditionally use by Australia’s
Aboriginal people who use them for
hunting.
What is a boomerang?
These organelles can be seen clearly
under a microscope during the
Phagocytosis and Osmosis Labs. Their
role is to fill-up with extra water and
pump it out of the cell to maintain
homeostasis.
What are contractile vacuoles?
In the Field Research and
Bioinformatics Lab, your students can
extract Tetrahymena’s ________ and
compare it to others to identify whether
it is from a currently known species of
Tetrahymena or a new species.
What is DNA ?
This refers to an organism’s
ability to change directions in
response to chemicals in its
environment. Also, the name of
one of the ASSET Labs.
What is Chemotaxis ?
These devices ship with many
of the ASSET Lab Modules,
they are designed to precisely
measure, in microliters, the
volume of a substance.
What are micropipettes?
These are the types of
microscopes, with two lenses,
you will need to use when
observing Tetrahymena in
your classroom.
What are compound light
microscopes?
When culturing Tetrahymena in
your classroom, it is important to
use ________ technique, which is
why we provide you with pipettes
that are individual wrapped.
What is STERILE technique?
We lend these devices
(standard and mini sizes),
which allow you to spin down
cells using centripetal
acceleration.
What is a Centrifuge (Micofuge)?
These devices allow students to
work in groups and all be
engaged in watching what is
going on under the microscope.
They are a great technological
tool to integrate into your
science classroom!
What is a Digital Camera
(ASSET uses Moticams)?
When asking to borrow an ASSET
Lab Module, you must first
__________ on our website?
What is to register (create an
easy to remember user name
and password)?
These two fantastic people
started the ASSET Program at
Cornell University.
Who are Donna Cassidy-Hanley,
and Ted Clark?
When borrowing an ASSET
module, we ask for this many
weeks notice.
What are Two Weeks?
PLEASE!
When your ASSET Kit
arrives, what is the first thing
you should do after opening
it?
What is find your Tetrahymena
shipping tube and make a
Stock Culture of it using the
falcon tube provided?
Three (3) days before running a lab
with students, you will need to make
“working cultures” of Tetrahymena in
the provided sterile petri plates, HOW
LONG do these plates generally stay
viable to use in experiments?
What are 3-4 days?
(Plates start to crash on about Day 5.
Plan to make fresh plates if you are using
with other classes later in the week.)
Category:
Cellular Biology
How much will you wager?
Tetrahymena have a ______, that contains
5 pairs of chromosomes with about the
same number of genes as humans have
and divides mitotically. Tetrahymena
also have a ________, which have about
300 chromosomes and instead of
dividing mitotically, it elongates,
constricts and divides to pass on to the
daughter cells.
(NEED BOTH BLANKS for Full Points)
What are a micronucleus
and a macronucleus ?
Tetrahymena have 2 nuclei! COOL!