2/1 bio notes cont'd
Card Set Information
2/1 bio notes cont'd
what are some uses of alginic acid?
addtives in dehydrated products, gelling agents, impression (making materials in dentistry), emulsion (ice cream/cosmetics)
characteristics of oomycetes
unicellular and multicellular, lack chloroplasts, absorptive heterotrophs, decomposers, plant parasitic
what are coenocytic with threadlike hyphae? ex: water mold on dead fish
what does it mean when a cell is not divided into individual sections, 1 big cell with multiple nuclei
what is the cell walls of fungi made of and what kind of cell are they?
what is an oomycete and what are there cells walls made of?
how are oomycetes distributed?
freshwater, terrestrial (moist areas) (on land-downy mildew, on water- slime mold)
what caused the potato famine in Ireland?
what are the five clades of plantae?
glaucophytes, red algae, land plants, chlorophytes, charophytes
how were chloroplasts derived in plantae?
primary endosymbiosis of a cyanobacterium
what gave rise to alveolates and stramenopolies chloroplasts?
what gave rise to excavate chloroplasts
characteristics of glaucophytes
unicellular, freshwater, photosynthetic pigments,
what are the photosynthetic pigments of glaucophytes?
chlorophyll a, carotenoids
importance of glaucophytes
only plant/alga group whose chloroplasts have peptidoglycan
characteristics of red algae
multicellular, filamentous or leaflike blades, marine, among deepest photosynthesizers, some of reef builders that secrete CaCO3
what are the photosynthetic pigments of red algae?
chlorophyll a and b, carotenoids, phycoerithryn (absorb blue wavelength of water)
how does red algae store food?
as floridean starches
examples of red algae
commercial uses of red algae
carrageenan (thickener in ice cream), agar (microbial growth medium), nori (source of food in Asia)
divisions of green algae
characteristics of chlorophytes
unicellular or multicellular (colonial, filamentous or leaf like blades), photosynthetic pigment
how do chlorophytes store food?
how are chlorophytes distributed?
marine (most), freshwater, and terrestrial
what are the chlorophytes photosynthetic pigments?
chlorophyll a and b, carotenoids
what are important photosynthesizers (primary producers) in aquatic ecosystems
examples of green algae
chlamydomonus, pleurococcus, "moss", oedogonium (filamentous), volvox, ulva
what characteristics are different in charophytes than in chlorophytes?
unicellular or multicellular filaments, freshwater and terrestrial,
what is the importance of charophytes?
closest relatives to land plants ex: spirogyra, chara