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BIOS 260 Unit 2-QUESTIONS AND ANSWERS
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BIOS 260 Unit 2-QUESTIONS AND ANSWERS
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BIOS 260 Unit 2-QUESTIONS AND ANSWERSMycosis Correct Ans-any disease caused by a fungus
Algae Correct Ans--group of photosynthetic organisms
-have all of the eukaryotic organelles, and chloroplasts
-produce mosts of the earths oxygen and a main component of plankton
-rarely infectious
Protista Correct Ans--term used for unicellular and simple multi cellular organisms
-2 major categories are algae and protozoa
Helminths Correct Ans--parasitic worms that are eukaryotes
, BIOS 260 Unit 2-QUESTIONS AND ANSWERS
-multicellular
-round worms and flat worms are the two major groups
What is the function of the cell wall and which organisms have chitin Vs. cellulose Correct
Ans-They are a rigid structure on the outside of the cell that provide structural support and
shape. Fungi have cell walls made out of chitin, while algae have cell walls made out of
cellulose
Which organisms contain ergosterol in the membrane Correct Ans-contained in fungi cell
membrane
Major fungal infections of humans Correct Ans-Tinea versicolor: Superficial skin infection
Ringworm: Caused by fungus! cause rings on skin found where there is keratin
Cadidiasis: Yeast infection
, BIOS 260 Unit 2-QUESTIONS AND ANSWERS
Coccidioidomycosis: San Joaquin valley fever. fungal lung infection
Cryptococcus: Torrulosis (lung infection)
What does candida albicans commonly cause? Correct Ans-Yeast infections
Ringworm is caused by which type of organism Correct Ans-FUNGI!
What are some benefits of fungi Correct Ans--Play an essential role in decomposition of
organic matter. (return essential minerals and nutrients to soil)
-Used in the production of antibiotics, alcohol, organic acids and vitamins
What are the two major categories of protists and which ones are photosynthetic Correct
Ans--algae and protozoa
-algae are photosynthetic
, BIOS 260 Unit 2-QUESTIONS AND ANSWERS
what are the characteristics of protozoa Correct Ans--eukaryotes
-single-cell
-grouped by locomotion
-Have two cell forms
*trophozoite
*cyst
What are the trphozoite requirements for moisture Correct Ans--there must be lots of
moisture and food for it to remain active
Life cycles and reproduction of protozoa in general Correct Ans--There life cycles revolve
around two stages. The trophozoite and cyst stage. conditons must be good for it to be in
trophozoite and when there bad they go into the cyst stage.
-asexual and sexual reproduction
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