What have we studied so far?

1
What have we studied so far?
Bacteria Archaea Eukarya Eukarya Eukarya Eukarya
Eubacteria Archaebacteria Protista Fungi Plantae Animalia
Domains Kingdoms
2
Unit Question

• How is the world we live in impacted by things we
  cant see?

Area of Interaction

• Health and Social Education

3
Kingdom Protista...

• First group of organisms to have a nucleus
  (eukaryotic).
• They are not animals, plants,
• or fungus

4
Kingdom Protista...

• Most are unicellular

Amoeba
Euglena
Paramecium
5
Kingdom Protista...

• A few are multicellular

Kelp
Brown Algae
6
Kingdom Protista...

• Protists have no specialized systems.
• They do everything within a single cell.

Paramecium eating Red yeast
Amoeba eating paramecium
7
Reproduction of Protists
Conjugation- 2 protists Exchange genetic material
Cell Division
Alternation of generation in green algae- sexual
stage and asexual stage
8
Types of Protists

• Protists are Grouped by how they get energy.
  They can be
• Heterotrophic
• Autotrophic
• Symbiotic

9
Heterotrophic Protists eat other organisms.
They are classified by how they move
10

• Flagellates move with
• a whip-like tail called
• a flagella.

11
Ciliates move with many cilia or hairs
12
(No Transcript)
13
(No Transcript)
14
Amoebas change their shape making cytoplasmic
projections called Pseudopods.
Amoeba performing phagocytosis (engulfing
food)
15
Amoeba phagocytosis
16
(No Transcript)
17
Passive protists dont move at all, they depend
on air or water to carry them.
18
A second type of protist are the Symbiotic
protists. They form a relationship with another
organism.
19
Some are mutualistic- both organisms are
benefited.
Coral(an animal) and Zooxanthellae(a
protist) help each other to survive
20
Trichonympha protists live in the intestines of
termites, helping them digest wood.
21
Some protists are parasitic and are responsible
for some of the worlds most deadly diseases!
Trypanosoma- causes African Sleeping Sickness
22
Protozoan Diseases

• Malaria
• Severe flu-like symptoms to coma and death,
• carried by the mosquito

23
Life cycle of Plasmodium and Malaria
24
Protozoan Diseases

• Amoebic dysentery
• Fever, stomach cramping. Dehydration
• Water-borne pathogens

Giardia
Cryptosporidium
25
Autotrophic Protists

• Unicellular algae and multicellular
• algae
• Get their energy by photosynthesis
• Produce half of the worlds oxygen

26
Ecological Roles- photosynthetic protists play an
important role on earth
They are the base of most aquatic food chains
27
(No Transcript)
28
Provide energy for coral
Some protists live inside coral and
provide food for its survival
29
Giant Kelp Forests
30
Provide shelter
Autotrophic protists help recycle sewage
31
Algal Bloom- protist grow to enormous
numbers and then disrupt the normal
ecosystem
Red Tide
32
Human Uses of Algae

• Food sushi, ice cream, salad dressing, pudding,
  candy bars, syrup, eggnog
• Medications, cosmetics
• Industrial uses plastics, waxes, paints,
  lubricants

33
Ocean Food Web
34
Deep Thoughts

1. What would fish eat without protists?
2. How would the global environment change without
   protists?

35
Guiding Question

• How is the world we live in impacted by things we
  cant see?

Area of Interaction

• Health and Social Education