Happy Friday! 4/25
Bell Work
1. What are three diseases caused by protozoa?
2. What structure do paramecia use to move?
3. What protozoa produce spores?
4. State another fact about protozoa.
TOC
29 QR Protist Codes
Please turn in crossword to the basket.
Also, have notebooks ready to turn in.
Example 1 –
1. Watch video clip
2. Draw the organism
3. Label parts
www.101science.com/paramecium.htm
Example 2
1. Draw organism
2.
http://www.cnqhkj.com/products_detai
l/&productId=4baf6dac-78ac-40459c5e-e5d24b73bcc0.html
Example 3
1. Watch video Clip
2. What is type of protist is this?
3. http://www.youtube.com/watch?v=7p
R7TNzJ_pA
Example 4
1. Watch video clip
2. What is happening?
3. What two organisms are shown?
4. http://www.youtube.com/watch?v=aWItglvT
iLc
Example 5
1. Draw and label
2. What protist is this?
3.
http://www.polypompholyx.co
m/2012/10/glockentierchen/
Example 6
1. View video clip?
2. 2. What organism is shown
here?
3. www.youtube.com/watch?
v=YybvNCWPXkA
Example 7
1. Draw and label
2. What protist is this?
3. http://Kbradleyscienceclas
s.blogspot.com/2012/02/c
ell-project.html
Example 8
1. What protist is this?
2. What structure is clearly
seen? Hint: It helps it
3. http://www.youtube.co
m/watch?v=jl0TzaWUQ
Wk
Example 9
1. What protist is in video clip?
2. What organelle is being shown?
www.youtube.com/watch?v=9Ynm
5ZOW59Q
Example 10
1. What protist is shown in picture?
2. Draw the protist.
3. http://www.powerchemicals.com/bio/spirogyra.htm
Example 11.
1. Watch video clip.
2. What protist is shown?
3. http://www.youtube.com/watc
h?v=w8O4OolGcPg
Example 12.
1. Watch clip.
2. What is it showing?
3. http://www.youtube.com/watch?v=bkVhLJLG7ug
Example 13
1. Watch clip
2. What is shown here?.
3. http://www.youtube.
com/watch?v=GY_uM
H8Xpy0
Kingdom: Protists
Domain Eukarya
Domain
Bacteria
Domain
Archaea
Common ancestor
Domain
Eukarya
General characteristics
• Classification criteria
– eukaryotes
– not animal, plant or fungi
– Live in wet or moist environments
That’s more of
what they’re not
& not
what they are!
Great Diversity
Protist Diversity
• The full spectrum of modes of life
– from unicellular to multicellular
– autotrophic to heterotrophic
– asexual to sexual reproduction
– pathogenic to beneficial
– sessile to mobile
Protist Motility
• How they move:
– flagellum
– cilia
– pseudopod
Kingdom Protista is REALLY Diverse:
• We will divide & learn them in three-groups:
– Animal-like
– Plant-like
– Fungus-like
Animal-like Protists
• Aka Protozoans
– heterotrophs, predators
– Unicellular
• Amoeba
• Paramecium
• Stentor
Amoeba ingesting a Paramecium
Paramecium with food
vacuoles stained red
Plant-like Protists
• Plant-like Protists
– autotrophs, photosynthesis
– Unicellular or multi-cellular
•
•
•
•
Euglena
Algae (green, red, brown)
Diatoms
Dinoflagellates
Fungus-like Protists
• Fungus-like Protists
– Heterotrophs
– Motile at some point in life cycle
– Reproduce by forming spores
• Water molds
• Downy Mildews
• Slime molds
Benefits of Protists
• Plankton
– phytoplankton
• small algae + diatoms
• much of the world’s photosynthesis
• produces ~90% of atmospheric oxygen
– zooplankton
• heterotrophic protists + animals
• key ecological role at base of
marine food web
Mmmmmm!
Sounds like breakfast!
Benefits of Protists
• Plankton
– Food for humans
• Kelp (brown algae or “sea weed”)
• Used to thicken foods such as ice cream or jelly
– Abrasives
• Diatoms (silica shells *glass)
• Empty shells form thick deposits that can be
used for commercial items such as pool filters,
toothpaste, sparkling paint
– Also natural pest control for slugs & fleas
Protists can also be Harmful
• Phytophthora infestans
• Great Potato Famine
– killed nearly a million people in Ireland in 1846–1847
– water mold virtually wiped out the country’s potato crops,
which were an essential staple in the Irish diet (sometimes
the only food on the table.)
.
• Red Tides occur when enormous
blooms are triggered by an
upwelling of nutrients from the
water’s depths during warmer
seasons.
• Population can jump to more
than 20 million cells per liter of
sea water along some coasts
during these blooms, turning the
water a reddish hue.
• Produces deadly toxin that can be
passed to humans from fish/shell
fish that consume them causing
illness/death.
After encountering and absorbing a red tide..a stingray becomes
disoriented. They have the appearance of not being able to see or control
what they are doing. Eventually the ray will stay at the surface lying
horizontally and die.
Protists & Disease
• Parasitic & pathogenic Protists
– Malaria – transmitted by mosquito
Plasmodium
– Giardia from contaminated water
– Trypanosomes – carried by fly
Giardia
Trypanosoma
Any
Questions??