Microbes(2) Flashcards
What are protists?
Protists are mostly unicellular eukaryotes that are found in a variety of aquatic or moist habitats
What are the different means of nutrition protists may have?
They may be:
-autotrophic, called algae
-heterotrophic, informally called protozoans, or
-mixotrophic. Mixotrophs are capable of photosynthesis and heterotrophy
State the 4 monophyletic supergroups.
-SAR
-Excavata
-Unikonta(proists and fungi)
-Archaeplastida
Seeyou at the arcade (acronym)
______are thought to be the main source of fossil oil.
Diatoms are thought to be the main source of fossil oil.
_____ was formed from primitive plants.
Coal.
How did the name “Excavata” come to be?
The name Excavata, the second supergroup in our survey of protists, refers to an “excavated” feeding groove possessed by some members of the group.
Which supergroups are completely unrelated to plants,animals and fungi?
SAR
What are some features of excavata?
- Excavates are anaerobic protists
- Have modified mitochondria
What is euglena?
An excavate, that is a mixotroph, and termites endosymbionts
What are the two clades that are included in unikonta?
-Amoebozoans, the protistan unikonts, include amoebas with lobe-shaped pseudopodia, plasmodial slime molds, and cellular slime molds.
-Fungi and animals are also unikonts
What are some features of archeaplastid?
-Archaeplastida are autotrophic.
-Archaeplastida also includes land plants
- Red and green algae are part of this group.
Give two examples of SAR.
Brown algae and Diatoms.
What are the ancestral lineages that evolved muliticelluarlity?
Multicellularity evolved in ancestral lineages of:
-stramenopiles (brown algae),
-unikonts (fungi and animals), and
-archaeplastids (red and green algae and plants
What kind of parasites are viruses?
Obligate parasites
Why are viruses called obligate parasites?
Viruses can only reproduce in cells that they infect.
