door Muhammad Nazrin Baharudin 10 jaren geleden
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Photoautotrophs Chemotrophs Autotrophs Heterotrophs
Reproduction: Binary fission. Shorter generation time quick evolution higher mutation rate
Cellular organization: DNA not enclosed in membrane, no other membrane bound compartments, genome 1/1000 smaller than eucaryotic genome
Various morphology
Bioremediation
Symbiotic relationships - Interactions: commensalism, parasitism, mutualism - e.g. N fixing bacteria provide source of N for plants - e.g. Cause various kinds of diseases e.g. tuberculosis, pneumonia, cholera
Recycling of chemical components
To remove detrimental pollutants from the environment
Mutualistic relationship (both organisms benefit) e.g. with ruminants - Degradation of fibrous plant materials releasing energy and VFA for growth of animals - Major barrier to the passage of pathogens through the digestive tract of ruminants
Parasitic relationship (cause harm to host) - Zooflagellate Trypanosoma (African Sleeping Sickness in humans) - Sporozoans: Plasmodium causes Malaria
In the marine food chain - Zooplankton (protozoans) ingest phytoplankton and bacteria - Influence the C and N cycle in oceans - A link for primary production and higher levels in the food chain.
Ciliophora
Ciliated and 2 types of nuclei
-Labyrinthomorpha -Apicomplexa -Microspora -Ascetospora -Myxozoa
Saprozoic or parasitic sp.
Sarcomastigophora
Flagellates and amoebae; single type of nucleus
Distribution: moist habitat, mostly free living in freshwater or marine, some terrestrial (soil)
Eucaryotic cells but unicellular
Motile eucaryotic unicellular protist
Algal bloom
Production of neurotoxin by algae
Disrupt higher links of local food web
as human food or to make various products
food base for marine food chains -Phytoplankton convert CO2 into protoplasm -->consumed by zooplankton --> crustaceans --> fishes --> humans
Human food e.g. sushi
provide habitat for marine communities
PRIMARILY AQUATIC
Neustonic
Benthic
Planktonic
Photoautotrophic
Differences with other photosynthetic eucaryotes
Eucaryotic + chlorophyll and pigments
Simple “aquatic plants”
Oomycota (Water molds)
Sexual reproduction: Oogonium fertilized by sperm cell/ antheridium to zygote to germinates to asexual zoospores with flagella
Acrasiomycota (Cellular slime molds)
individual amoeboid cells (unicellular) - feed phagocytically
cellular slime molds
Myxomycota (Plasmodial slime molds)
Characteristics
phagocytosized dead material
motile amoeboid mass called plasmodium (lack of cell wall)
saprophytes
viscous masses of slime
Cause diseases in plants e.g. tobacco plants, potatoes, grapes
As decomposer and consumer in the ecosystem
Engulf bacteria (as predator)
Moist terrestrial habitats e.g. soil, decaying wood, dung and etc.
multicellular except yeast
spores bearer
nutrient stored-glycogen
cell wall-chitin
no cholorophyll
Ascomycetes-sac
Zycomycota-zygote
Chytridimycota-chytrid
Basidiomycetes-club
FUNGI TO MODIFY HABITAT
Lichens inhabit inhospitable places and make habitat suitable for life
FUNGI AS DECOMPOSER
Recycling carbon, nitrogen and other elements to the ecosystem
Reduce complex polysaccharides and proteins into simple organic compounds and use by other
FUNGI AS SPOILER
Decompose food, wood and etc.
HELP IN IMPROVE GROWTH
Mycorrhizae
FUNGI AS PATHOGENS
causes ringworm,carcinogens,aflatoxin
FUNGI AS FOOD