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Flashcards in Protists Deck (38):
1

General characteristics

Eukaryotic (but prokaryotic-like organelles)
Mostly unicellular

2

Endosymbiosis

Unicellular organisms engulf other cells, with become organelles in the host cell

3

Excavata

One of 5 supergroups
Non-functional mitochondria
Groove for feeding
Lack plastids
Anaerobic
Flagellated

4

Diplomonads

Members of Excavata
Giardia: intestinal parasite

5

Parabasalids

Members of Excavata
Trichomonas vaginalis: STD that infects vagina

6

Euglenozoans

Members of Excavata
Crystalline rod in flagella

7

Kinetoplasts

Members of Euglenozoa
Trypanosoma (Sleeping sickness): spread by Tsetse fly and infects nervous system

8

Euglinids

Members of Euglnozoa
Flagella
Mixotroph
Phagocytic

9

Chromalveolata

One of 5 supergroups
Engulfed a red algae

10

Dinoflagellates

Members of Chromalveolata
2 flagella
Cellulose plates
Phytoplankton
Red tides
Bioluminescence

11

Apicomplexans

Members of Chromalveolata
Animal parasites
Plasmodium (Malaria)

12

Ciliates

Members of Chromalveolata
Use cilia to move and feed
Paramecium

13

Macronuclei

Nuclei paramecium use for daily functions

14

Micronuclei

Nuclei paramecium use for reproduction

15

Diatoms

Members of Chromalveolata
Pigments: Chl a and c, caroteoids, fucoxanthin
Silica in cell wall
Phytoplankton

16

Golden algae

Members of Chromalveolata
Mixotrophs
Phytoplankton

17

Oomycetes

Members of Chromalveolata
Cells with cellulose
Once thought to be fungi

18

Brown algae

Members of Chromalveolata
Seaweeds
Thallus: algae that is plantlike
Holdfast (adhere), Stipe (exchange materials- stem), blades (leaves), floats (suspend in water)
Chl a and c, carotenoids, fucoxanthin
Cell walls: cellulose
Alternation of generations

19

Rhizaria

One of 5 supergroups
Amoebas with thread-like pseudopods
Heterotrophs

20

Cercozoans

Members of Rhizaria
Amoeboid
Flagellated

21

Forams

Members of Rhizaria
Have CaCO3 shells through which pseudopodia extend

22

Radiolarians

Members of Rhizaria
Internal silica skeletons through which microtubules extend

23

Archaeplastidia

One of 5 supergroups
Contain algae species

24

Red algae

Members of Archaeplastidia
Phycoerythrin- give blackish/reddish color

25

Chlorophytes (green algae)

Members of Archaeplastidia
Chlorophyll a and b, carotenoids
Starch
Cell walls made of cellulose

26

Unikonta

One of 5 supergroups
Heterotrophs
Decomposers
Contain amoebas, fungi, and animals

27

Plasmodial slime molds

Members of Unikonta
Bright colors
Form super cell (plasmodium)

28

Cellular slime molds

Members of Unikonta
Single cell
Can aggregate when food is scarce
Parasitic

29

Gymamoebas

Members of Unikonta
Heterotrophs
Variety of environments

30

Entamoebas

Members of Unikonta
Parasites
E. histolytica (dysentery)

31

Desmids

Unicellular green algae
Symmetrical
Junction between 2 halves

32

Chlamydomonas

Unicellular green algae
Move with flagella

33

Chlamydomonas Sexual Lifecycle

Zoospores (haploid cells) have different mating strains (+ or -): isogametes
Zoospore nuclei fuse (syngamy): sexual reproduction
Zygote is resistant to environmental stressors
Meiosis produces more zoospores

34

Volvox

Colonial green algae
Individual cells connected to each other by cytoplasmic strands

35

Spirogyra

Filamentous green algae
Grow in end-to-end chains
Photosynthetic: ribbon-like chloroplasts

36

Spirogyra Sexual Lifecycle

Haploid vegetative cells have opposite mating strains
Mating strains connect via conjugation tube
Male gamete fuses with female gamete
Resistant zygote forms
Asexual reproduction: fragmentation

37

Oedogonium

Filamentous green algae
Have distinctive male and female parts

38

Oedogonium Sexual Lifecycle

Antheridium (male part) releases antherozoids
Antherozoids travel to Oogonium (female part)-fuse with egg
Oospore (diploid) undergoes meiosis to form zoospore (haploid)
Zoospore forms into a filament
Mitosis occurs by fragmentation