lecture 5 protists Flashcards
(23 cards)
protist organelles
nucleus (nucleoid in prkryts) ribosomes ER Golgi Mitochondria chloroplasts
what does algae refer to
MOs that photosynthesis
what are ciliates
a form of protists
what are the basic concepts of protists cells
movement feeding osmosis respiration reproduction
what are cilia
organelle
used for movement
attached by a stalk
used for feeding currents
how are cillia used in vorticella
feeding currents sucks food into vortex at cell mouth
diversity in protists
size is massivley variable
what are the cilia for in ciliate paramecium
feeding and movement
what are podophrya
each tentacle ends with a cytosome and they have extrusomes
what are extrusomes
secretary organelles
how is food ingested in flagellates and amoeba
pseudopodia
cytosome('mouth')how is food ingested ciliates
prey deposited into a food
how is food ingested ciliates
prey deposited into a food vacuole
what is a cytoproct
cell anus!
hows food digested and consumed
food vacuole forms
vacuole becomes acidic
alkalinity restablished
waste material expelled
are all pathogens digested
no some hold them in
what are the three nutritional modes
photoautotroph
heterotroph by ingestion
heterotroph by absorption
what are mixotrophic ciliates
autotroph and heterotroph
what are the two ways autotrophic abilities are acquired
organellar mixotrophy
cellular mixotrophy
what happens in organellar mixotrophy
retain organelle after digesting prey
what happens in cellular mixotrophy
the ciliates use endosymbiotes
how do they reproduces
asexually, binary fission
how do they sexually reproduce
conjugation micronulcei swap (micronuclei fusion)
