6.2 Microbes, Plankton, Algae, Plants Flashcards
marine viruses
nonliving, yet most abundant non-living thing in ocean. Still contains DNA or RNA, a capsid protein coat, glycoproteins, envelope, ~20-200nm
lytic cycle
the phage replicates and lyses the host cell
lysogenic cycle
phage DNA is incorporated into the host genome, where it is passed on to subsequent generations
when virus attacks cells and injects DNA/RNA unto core,
virus confuses all to replicate it, cells “lyse”, releasing dissolved organic material into water
primary ecological functions of viruses in ocean
-most abundant non-living thing in ocean
-cause DOM’s to be up for eating
-can cause disease such as hepatitis in marine organisms
marine bacteria
most abundant living thing in ocean, single-celled prokaryote, heterotrophic/autotrophic, aerobic or anaerobic, 1um(millionth of a meter)
marine bacteria ___ DOM
recycles back into food web
marine plankton
adrift organisms in ocean
phytoplankton
unicellular plant-like Algae, - diatoms and dinoflagellates
zooplankton
multicellular animals, like copepods
meroplankton
zooplankton born as plankton maturing into fish, lobsters, crabs later in life
holoplankton
spend whole lives as plankton like jellyfish copepod
marine phytoplankton
visibility can be affected by them, who are photosynthetic, and include diatoms and dinoflagellates
HAB(Harmful Algae bloom)
cause PSP(paralytic shellfish poisoning), domoic acid is caused by diatoms and saxitoxin is caused by dinoflagellates.