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Answers:* they lack a membrane-bound nucleus and other organelles * they lack the histone proteins associated with eukaryotic chromosomes like those of "true algae" * their cell walls contain peptidoglycan like other eubacteria * their photosynthesis is different to that of "true-algae" in that they lack chloroplasts. They have an elaborate and highly organized system of internal membranes which function in photosynthesis. Chlorophyll a and several accessory pigments (phycoerythrin and phycocyanin) are embedded in these photosynthetic lamellae, the analogs of the eukaryotic thylakoid membranes.
Answers:they have no nucleus, they are prokaryotes. their cell wall is like the one of other gram-negative bacteria. they are eubacteria, the name blue-green algae is not in use anymore. now they are called "cyanobacteria".
Answers:Animalia: multicellular heterotrophic eukaryotes with no cell wall Plantae: multicellular eukaryotes with cell wall of cellulose, (almost all are) photoautotrophic Fungi: heterotrophic eukaryotes with cell wall of chitin Protista: eukaryotes that don't fit into Animalia, Plantae, or Fungi Archaebacteria: prokaryotes with ether-linked membrane lipids Eubacteria: prokaryotes with ester-linked membrane lipids
Answers:Eubacteria - Clostridium tetani, Clostridium botulinum, Clostridium perfringens, Bacillus antracis, Bacillus pneumoniae Archaebacteria - Thermus aquaticus, Pyrococcus furiosus,Deinococcus radiodurans, Methanopyrus kandleri, Methanosarcina acetivorans I hope that helps