Protists (E1)

Question 1

Protists

Answer 1

a mostly unicellular group of eukaryotes, anything that isn’t a plant, animal, or fungi
- Photoautotrophs, heterotrophs, mixotrophs, sexual/asexual

Question 2

Endosymbiosis

Answer 2

a relationship between two species where one lives inside the cell or cells of another
- Alpha proteobacterium gave rise to mitochondria (only once over evolution’s course)

Question 3

Diplomonads (protists)

Answer 3

have reduced mitochondria called mitosomes, parasites
- Lack of functional electron transport chains, cannot use oxygen
ex. Giardia (causes diarrhea)

Question 4

Kinetoplastid (protist)

Answer 4

have one, large mitochondrion holding a mass of DNA (kinetoplast)
- Can evade detection in the immune system by switching the surface coating protein from generation to generation, preventing the host from forming immunity
- Trypanosoma (sleeping sickness)

Question 5

Apicomplexan

Answer 5

parasites, spread through sporozoites (infectious cells), sexual/asexual
Ex. Plasmodium (malaria)
Bite > sporozoites > merozoites > gametocytes > zygotes

Question 6

Ciliates

Answer 6

covered in cilia that move rhythmically, used to move and feed

Question 7

Rhizarian / Tubulinids

Answer 7

amoebas (move and feed by pseudopodia)