Diversity Of Eukarya Pt.2

Question 1

Describe Kinetoplastids

Answer 1

Named for the presence of the kinetoplast, a mass or DNA in their single large mitochondria and live primarily in aquatic habitats feeding on bacteria

Question 2

Describe Euglenids

Answer 2

Nonpathogenic and phototrophic, contains chloroplasts that can exist as heterotrophs and can feed on bacteria by phagocytosis

Question 3

What are Alveolates

Answer 3

Have alveoli that are sacs underneath the cytoplasmic membrane that can be ciliates, dinoflagellates, and apicomplexans

Question 4

Describe Ciliates

Answer 4

Organisms with cilia that can cause asymptomatic, mild diarrhea, stomach ache, abdominal tenderness and is transmitted by cysts to food and water; can be found in the intestinal tract and can be controlled with proper hygiene and municipal sanitation

Question 5

Describe Dinoflagellates

Answer 5

Can be marine or freshwater and phototrophic ; have two flagella with different insertion points on the cell ; some are free living or symbiotic with corals ; dense suspensions are called red tides and can poison and kill fish and humans

Question 6

Describe the Apicomplexans (sporozoan)

Answer 6

Are non motile and parasitic ; cause malaria, toxoplasmosis, and coccidiosis

Question 7

What are Stramenopiles

Answer 7

Oomycetes, diatoms, golden algae, and brown algae

Question 8

What are Oomyctes

Answer 8

Water molds based on their filamentous growth and the presence of coenocytic hyphae

Question 9

Describe diatoms

Answer 9

Freshwater and marine habitats that have cell walls that are made of silica called frustules

Question 10

Describe Golden algae

Answer 10

Chrysophyta that are mostly unicellular, with some colonial; named from their color

Question 11

Describe Brown algae

Answer 11

Seaweed (not unicellular)

Question 12

Describe Rizaria

Answer 12

Have threadlike pseudopodia; Chlorarachniophytes are phototrophic amoeba- like organisms that have flagellum for dispersal; Foraminifera are only marine that form shell-like structure called tests; Radiolarians are mostly marine heterotrophic organisms and their tests are made of silica

Question 13

Describe Amoebozoa

Answer 13

Use pseudopodia for movement and feeding ; include Gymnamoebas, entamoebas, slime molds

Question 14

Describe Entamoebas

Answer 14

Cause amebic dysentery, abdominal cramps, copious diarrhea, low grade fever; found in intestinal tract transmitted by cysts to food or by animal waste irrigation

Question 15

Describe Slim molds

Answer 15

Plasmodial slime with several shapes and forms that move as a plasmodium (mass whose nuclei aren’t separated by cell membrane) ; Cellular slime molds are myxamoeba-amoeboid (when food is plentiful) pseudoplasmodium that form sorocarp (produces spores)