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Cyanobacteria: Quiz

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Question 1: Certain cyanobacteria produce cyanotoxins including anatoxin-a, anatoxin-as, aplysiatoxin, ________, domoic acid, microcystin LR, nodularin R (from Nodularia), or saxitoxin.
ProteinOxygenWaterCylindrospermopsin

Question 2: Carbon dioxide is reduced to form carbohydrates via the ________.
Citric acid cycleCalvin cycleMicrobiologyBiochemistry

Question 3: Mitochondria are believed to have originated not from cyanobacteria but from an ancestor of ________.
Rocky Mountain spotted feverRickettsiaScrub typhusOrientia tsutsugamushi

Question 4: The variations to this theme is mainly due to ________ and phycoerythrins which give the cells the red-brownish coloration.
XanthophyllCaroteneLycopeneCarotenoid

Question 5: The most common cyanobacterial structures in the fossil record include ________ and oncolites.
Primary productionPlanktonDiatomStromatolite

Question 6: Sometimes a mass-reproduction of cyanobacteria results in ________.
Marine conservationMarine biologyAlgal bloomMarine larval ecology

Question 7: A clear paleontological window on cyanobacterial ________ opened about 2000 mya, revealing an already diverse biota of blue-greens.
Introduction to evolutionNatural selectionPopulation geneticsEvolution

Question 8: Cyanobacteria, also known as blue-green algae, blue-green bacteria or Cyanophyta, is a phylum of ________ that obtain their energy through photosynthesis.
Gram-negative bacteriaGram-positive bacteriaBacteriaCorynebacterium

Question 9: In most forms the photosynthetic machinery is embedded into folds of the cell membrane, called ________.
ThylakoidLight-dependent reactionsMitochondrionPhotosynthesis

Question 10: Some live in the fur of sloths, providing a form of ________.
Convergent evolutionCrypsisMilitary camouflageCamouflage







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