Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/27

Click to flip

27 Cards in this Set

  • Front
  • Back
Protist
-all eukaryotes except green plants, fungi, and animals
What is caused byprotists?
-Malaria
-Irish Potato Famine
-Toxic algal blooms
-Toxoplasmosis
-"Red tides"
-Diarrhea
-Trichormoniasis
-Leishmaniasis
-Trypanosomiasis
-Chagas disease
-Amoebic dyssentery
What causes malaria?
Plasmodium
What is the economic importance of protists?
-produce chemical energy by photosynthesis
-Diatoms
-Produce carbon
-Aquatic food chains
-Help reduce global warming because they move carbon
-Carbon sink
What are the key lineages of protists?
Every- Excavata
Day- Discicristata
Alfred- Alveolata
Ships- Stramenophila
Cargo- Cercozoa
Past- Plantae
America- Amoebozoa
Excavata
Every
-Feeding groove
-No mitochondrion
Discicristata
Day
-Disc shaped cristae
-Mitochondria
Alveolata
Alfred
-Alveoli (sacs) for support
Stramenophila
Ships
-Flagella with hairlike projections
Cercozoa
Cargo
-Lack cell walls
-Tests (shells)
-Pseudopodia
Plantae
Past
-Chloroplasts with double membrane
Amoebozoa
America
-Lack cell walls
-Pseudopodia
Endosymbiosis Theory
Proposes that mitochondria orginated when a bacterial cell took up residence inside a eukaryote about 2 million years ago. Also contends that chloroplasts orginated in an analogous way
What are the themes in the diversification of Protists?
-Organelles divide a large cell into compartments
-Evolution of multicellularity
-Structures for support and protection
How do protists find food?
-Ingestive- Pseudopodia engulf
-Flter or suspension feeding- cilia currents sweep food into gullet
-Absorptive- nutrients are taken up directly from environment (decompsers or parasites)
-Photosynthesis
How do protists move?
-Cell crawling via pseudopodia
-Swimming via flagella
-Swimming via cilia
How do protists reproduce?
Most undergo asexual reproduction routinely. Many udnergo sexual reproduction intermittenly.
Alternation of generations
Haploid and diploid phases of life cycle are multicellular.
Gametophyte
Multicellular haploid form
Sporophyte
Muticellular diploid form
What lineage includes Diplomonads and Parabasalids?
Excavata
What lineage includes Euglenids?
Discicristata
What lineage includes Ciliates, dinoflagellates, and Apicomplexa?
Alveolata
What lineage includes Oomycetes, Diatoms, and Phaeophyta (brown algae)
Stramenophila
What lineage includes Foraminifera?
Cercozoa
What lineage includes Rhodophyta (red algae)?
Plantae
What lineage includes Cellular Slime Molds and Myxogastrida (Plasmodial Slime Molds)?
Amoebozoa