BIO 242 Chapter 28 Flashcards
This eukaryote supergroup contains diplomonadida, parabasalids, and euglenozoans.
Excavata
This eukaryote supergroup has been proposed due to DNA similarity and the common ancestor engulfed a single-celled red alga through endosymbiosis. (Includes dinoflagellates and apicomplexans)
Stramenopila, Alveolata, Rhizaria (SAR)
This eukaryote supergroup is proposed due to DNA evidence descended from a common ancestor that engulfed a cyanobacterium. Includes rhodophyta, chlorophyta.
Archaeplastida
This eukaryote supergroup contains animals and fungi and have mitochondria. Includes opisthokonts and amoebozoans.
Unikonta
Contrast prokaryote and eukaryote cell size.
Pro - small (.1 - 10 microns)
Euk - large (10 - 100 microns)
Contrast prokaryote and eukaryote DNA and chromosomes.
Pro - no histones, simple and circular, in nucleoid region.
Euk - histones, linear DNA on several chromosomes, in nucleus region within nuclear envelope.
Contrast prokaryote and eukaryote metabolism
Pro - no mitochondria or chloroplasts, done in cytoplasm
Euk - Occurs in mito and chloroplasts
Contrast prokaryote and eukaryote intracellular movement.
Pro - none
Euk - mitotic movement of chromosomes and via cytoskeleton
Contrast prokaryote and eukaryote flagella, cilia, cell walls
Pro - no ‘9 pairs plus 2’ pattern of microtubules, cell wall of disaccharide polymers
Euk - ‘9 pair + 2’ pattern of microtubules, no cell wall dissacharide polymer
This eukaryotic life cycle is observed in some algae and fungi. It results from the fusion of two haploid gametes in mitosis.
Zigotic life cycle
This eukaryotic life cycle is observed in humans and all other animals. It results from haploid gametes that fuse together.
Gametic life cycle
This eukaryotic life cycle happens in multicellular plants and show a regular alternation of generations, where there is a multicellular haploid adult stage that alternates with a multicellular diploid adult stage (sporophyte).
Sporic life cycle
The process where multiple fission is preceded by the fusion of gametes, seen in some apicomplexans.
Sporogony
When protists form gametes that are all alike and the same size.
Isogamy
When protists form gametes that are of two different sizes.
Anisogamy
How protists move.
Flagella (9+2 microtubules) and cilia
What pseudopodia thickens into a gel state that contains no organelles at the leading end to move.
Ectoplasm
The more soluble part that flows toward the end of pseudopodia to convert to ectoplasm for locomotion.
Endoplasm
These species use light energy.
Phototrophs
These species require at least one organic nutrient as a carbon source.
Heterotroph
Protists that consume whole organisms.
Holozoic (phagotrophs)
Protists that feed on food in fluid form.
Saprozoic (osmotrophs)
The distinct site where food vacuoles form in ciliates and flagellates.
Cytostome
Cell anus where waste vacuoles attach and materials are expelled by exocytosis.
Cytoproct
Ciliates can discharge these at potential predators or use these to capture food.
Trichocysts
Some freshwater species use these along with ATP to get rid of excess water.
Contractile vacuoles
When multiple fission forms many daughter cells are formed.
Schizogony
Amoebozoans use these large lobe-shaped structures for movement.
Pseudopodia
These few protists combine photsynthesis with heterotrophic modes of nutrition.
Mixotrophs
A ciliate has a large _____ for day-to-day activity of the cell and one or more _____ for sexual reproduction.
macronuclei, micronuclei
These are heterotrophic, animal-like protists (ciliates, flagellates).
Protozoa
These are photsynthetic, plant-like protists (red and green algae)
Algae
Many protists form these to survive the bad times in an environment to leave the host and be exposed to the outer environment.
Cysts
This supergroup includes Amoebozoans, opisthokonts (animals and fungi), plasmodial and cellular slime molds.
Unikonta
These unikonts have a single posterior flagellum in their motile cells.
Opisthokonts
These unikonts use large lobe-shaped pseudopodia for movement.
Amoebazoans
These mycetozoa undergo mitosis but not cytokinesis, thus growing on each other.
Plasmodial slime molds
Name and super group for red algae
Rhodophyta (Archaeplastida)
Name and super group for green algae.
Chlorophyta (Archaeplastida)
This super group includes: dinoflagellates (outer cellulose plates), apicomplexans (malaria), ciliates, diatoms (silicon dioxide walls), golden algae (chrysophyta), brown algae (kelps), water molds, and rhizaria.
SAR
This SAR member has silicon dioxide in its cell walls.
Diatoms
This SAR Rhizaria have outer shells of calcium carbonate.
Foraminiferans
This SAR Rhizaria has an internal skeleton made of silica (glass).
Radiolarians
This SAR member has one smooth flagellum and one hairy flagellum.
Stramenopila
This super group includes diplomonadida (giardia lamblia), Parabasalids (trichomonas vaginalis), and Euglenozoans.
Excavata
This Excavata member causes Trypanosoma (sleeping sickness).
Euglenozoans
This Excavata member has mitosomes and some cause dysentery. They can be on the surface of the large intestine and steal food from you.
Diplomonadida
This Excavata member have hydrogenosomes and include Trichomonas vaginalis, a sexually transmitted parasite in humans.
Parabasalids
What are unicellular eukaryotes that are the most diverse and among the most elaborate eukaryotes?
Protists
What’s the advantage of conjugation in ciliates?
It increases genetic variability.
Haploid gametes fuse -> diploid zygote -> zygote mitosis to produce multicellular adult. ONLY life cycle stage that is haploid is the single celled gamete.
Gametic life cycle
Haploid gametes fuse -> diploid zygote -> zygote meiosis creating haploid spores -> spores undergo mitosis to develop haploid multicellular adult organism -> some of these haploid cells till later develop into gametes by mitosis. ONLY diploid cell is the zygote itself.
Zygotic life cycle
In this life cycle, gametes and spores can be haploid or diploid. Plants show an alternation of generations between the gametophyte (haploid adult) and the sporophyte (diploid adult).
Sporic life cycle
What super group? Rhodophyta
Archaeaplastida
What super group? Animals and fungi
Unikonta (ospithokonts)
What super group? Amoebazoans
Unikonta
What super group? Plants
Archaeaplastida
What super group? Chlorophyta
Archaeaplastida
What super group? Water molds
SAR (stramenopila)
What super group? Slime molds
Unikonta (amoebazoans)
What super group? Golden algae
SAR (stramenopila)
What super group? Brown algae (Kelps)
SAR (stramenopila)
What super group? Dinoflagellates (red tides)
SAR (alveolata)
What super group? Ciliates
SAR (alveolata)
What super group? Apicomplexicans (malaria)
SAR (alveolata)
What super group? Diatoms (silicon dioxide)
SAR (stramenopila)
What super group? Foraminiferans (calcium carbonate shell)
SAR (rhizaria)
What super group? Radiolarians (internal silica/glass)
SAR (rhizaria)
What super group? Diplimonadia (dysentery/intestines)
Excavata
What super group? Guardia Lamblia
Excavata (Diplimonadia)
What super group? Parabasalids
Excavata
What super group? Trichomonas vaginalis
Excavata (parabasalids)
What super group? Euglenozoans
Excavata
What super group? Tryponosoma (sleeping sickness)
Excavata (euglenozoans)