Diversity Of Eukaryotic Microorganisms

Question 1

Explain phylogeny of the eukarya

Answer 1

Uses 18S rRNA genes for phylogeny of eukaryotes and relationship of 18S rRNA genes is much less strong for eukaryotes than 16S rRNA genes are for prokaryotes; have been constructed using other genes

Question 2

Describe archaeplastida

Answer 2

Red and green algae; all are photosynthetic, can be unicellular to colonial or motile, coenobium (attach together), tetresporal (embedded in mucilage), and have colonies

Question 3

Describe green algae

Answer 3

Known as chlorophyta; closely related to plants, mostly inhabit freshwater but can also be in marine or terrestrial, can be unicellular to multicellular, and have sexual and asexual reproduction

Question 4

Describe red algae

Answer 4

Mostly marine, but some freshwater and terrestrial and red color is from phycoerythrin

Question 5

Yeast is?

Answer 5

Unicellular fungi

Question 6

Hyphae is?

Answer 6

Mass of branching filaments

Question 7

Mycelium is?

Answer 7

Whole mass of hyphae

Question 8

septate hyphae have?

Answer 8

have visible crosswalls

Question 9

non septate hyphae do not have

Answer 9

Crosswalls

Question 10

Fungi has?

Answer 10

2 divisions and 6 classes

Question 11

Describe Microsporidia

Answer 11

Tiny unicellular parasites that are Closely related to chytridomycetes; Lacks mitochondria, hydrogenosomes, Golgi apparatus

Question 12

Describe Chytridiomycota

Answer 12

Infects amphibians and is the Oldest most primitive fungi called Coenocytic hyphae

Question 13

Describe Glomeronycota

Answer 13

Dependent on symbiosis with and plants

Question 14

Describe zygomycete

Answer 14

Also known as mucormycota (bread mold) ; sporangiospores reproduce from asexual spores, zygospores reproduce from sexual spores

Question 15

Describe yeast

Answer 15

Unicellular fungi that can be either ascomycete, basidiomycete, or deuteromycete ; asexual reproduction has budding of yeast (blastospore)

Question 16

Describe Ascomycete

Answer 16

Mold or yeast that is a septate hyphae; conidiospores reproduce from asexual spores or ascospores reproduced from sexual spores (rare)

Question 17

Describe basidiomycete

Answer 17

Mold and yeast that have septate hyphae; conidispores reproduce from asexual spores (rare) or reproduce from sexual spores called basidiospores

Question 18

Describe deuteromycete

Answer 18

Mold and yeast that have a septate hyphae and Human and animal pathogens (biphasic or dimorphic); have no sexual stage but change from fungal stage and yeast phase

Question 19

Some Protozoa..

Answer 19

Produce cysts, protect against the environment, have reproductive function, and means of transfer from one host to another

Question 20

Describe parabasalids

Answer 20

Contain a parabasal body that lack mitochondria but have hydrogenosomes for anaerobic metabolism; genomes lack introns

Question 21

Describe diplomonads

Answer 21

Have two nuclei of equal size and microsomes

Question 22

Describe the Giardia lamblia disease

Answer 22

Mostly asymptomatic that produces mild diarrhea, stomach ache, abdominal tenderness, transmitted by cysts to food and water ; can be controlled with proper hygiene and municipal sanitation