Homework

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Homework

• Summarizing concepts 3 and 4 pg. 521

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Character Ed
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Objectives

• Distinguish plant-like protists.
• Describe how protists affect humans.

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Protists!

• Chapter 26

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Plant-Like Protists

• Plant-like protists are known as algae
• Autotrophic
• Have chloroplasts for photosynthesis
• Share several features
• Have photosynthetic pigment chlorophyll a
• Aquatic
• Flagella
• Pyrenoids storing starch and photosynthesis

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Algae

• Four basic body forms
• Unicellular free-living aquatic, live together
  as phytoplankton
• Form the base for nearly all marine and
  freshwater food chains
• Colonial individual cells acting in a
  coordinated manner, Volvox

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Algae

1. Filamentous multicellular, slender and rod
   shaped and are composed of cells that are joined
   end to end, Spirogyra
2. Multicellular kelp and seaweed

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Plant-like Protists

• Green Algae
• Brown Algae
• Red Algae
• Diatoms have cell walls, shells
• Dinoflagellates bioluminescence, red tide
• Golden algae
• Eugleniods both plant-like and animal-like,
  Euglena

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Fungi-like Protists

• Slime molds and Water molds
• Stationary reproductive phase in which they use
  spore-bearing structure called a fruiting body

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Slime Molds

• Found on moist, decaying matter
• White, yellow, or red masses of slime

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Water Molds

• Composed of branching filaments of cells
• Found mainly in bodies of fresh water

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Protists and Humans
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Protists and Humans

• The produce large amounts of oxygen
• Autotrophs produces
• Symbiotic relationship with coral give them
  their color and carbon supply

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Industry

• Food seaweed, sushi
• Byproducts
• Alginate cosmetics, various drugs, stabilize
  ice cream
• Carrageenan
• Agar petri dishes

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Health

• Can also cause diseases
• Malaria
• Sleeping Sickness
• Giardiasis
• Trichomoniasis