Cyanobacteria Characteristics & Morphology Flashcards
What defines a prokaryotic cell?
No membrane bound organelles / No nucleus, chloroplast, or mitochondria / Circular strands of DNA without histones / No mitosis, meiosis, or organized sex.
What are cyanophyrin granules?
It’s a Nitrogen/Carbon reserve polymer present in most cyanobacteria.
What’s the equivalent of the cytoplasm in cyanobacteria?
The periplasm.
The five pigments found in most/all cyanobacteria.
Chl. a, phycobilins (phycoerythrin/phycocyanin), others (allophycocyanin, beta carotene, and zeaxanthin).
Which do photosynthetic organelle do cyanobacteria have?
Thlyakoids.
The components of a cyanobacteria’s cell wall.
Peptidoglycan, protein & carbohydrate combinations.
What are the four possible storage products in cyanobacteria?
Glycogen, polyglucan granules, cyanophycean granules, polyphosphate bodies.
Cyanobacteria are flagellated.
No.
What are the two ways cyanobacteria move?
Via gliding movements (in Oscillatorials; via mucilage and pores in cell wall).
What are the four important features of cyanobacteria?
Lots of mucilage, gas vesicles (aerotropes), luxury consumption of phosphorus, and toxin production.
What do heterocytes do?
Convert atmospheric nitrogen into ammonia (or other organic and usable forms).
What do akinetes do?
Stores nutrients to serve as a long term survival spore; resistant to freezing and dryness.
All cyanobacteria have heterocytes and/or akinetes.
False.
What’s hormogonia?
The fragmentation of a trichome.
Difference between trichomes v. filaments.
Trichomes make up the filament. (Trichome plus sheath equals filament).
