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Dinoflagellates

Dinoflagellate

Photosynthetic organisms of the order dinoflagellida (for botanists Dinophyceae). They are aquatic and have 2 flagella lying in grooves in an often elaborately sculptured shell or pellicle that is formed from plates of cellulose deposited in membrane vesicles. The pellicle gives some dinoflagellates very bizarre shapes. Their chromosomes lack centromeres and may have little or no protein and may perhaps be intermediate between pro and eu karyote types, hence the group has been termed mesokaryotic. The nuclear membrane persists during mitosis. They are very abundant in marine plankton. Gymnodinium and Gonyaulax, that causes red tide, produce toxins that if accumulated by filter feeding molluscs can be fatal. Another common genus is Peridinium.


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Help with questions on mitosis/meiosis/reproduction

... I can only find long explanations that are way too confusing to understand. Could you please help me out? 1. How does cell division in diatoms and dinoflagellates help us to understand how the process of mitosis evolved in eukaryotes? 2. Prokaryotic cell division is a much simpler process than ...

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by drivingmecrazy
Sun Nov 21, 2010 10:53 pm
 
Forum: Genetics
Topic: Help with questions on mitosis/meiosis/reproduction
Replies: 1
Views: 1863

algae

Dinoflagellates are not included in Rhodophyta but in Dynophyta, and diatomes are included in Bacillariophyceae inside Ochrophyta as well

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by Nu_Crow
Wed Feb 07, 2007 10:34 pm
 
Forum: Botany Discussion
Topic: algae
Replies: 14
Views: 9248

The Fiber Disease

... okay, cant' get, closed minds............ here is more on the symbiosis......... "We have used monocultures of the DMSP-producing dinoflagellates Pfiesteria piscicida, Pfiesteria shumwayae, and Pfiesteria-like (Cryptoperidiniopsis) dinoflagellates as our model system for studying ...

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by Skytroll
Wed Nov 08, 2006 7:58 pm
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 4988693

The Fiber Disease

... symbiosis........ due the flagella........... "In the marine environment, unicellular algae and other eukaryotic microorganisms, such as dinoflagellates, coexist with a diverse community of heterotrophic bacteria. Much of the carbon and nitrogen required for the growth of these bacteria ...

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by Skytroll
Wed Nov 08, 2006 7:30 pm
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 4988693

bioluminescence

... project, by providing information or a push in the right direction, it would help me immensely. So far i have looked in to using bacteria and dinoflagellates to produce light, however i need specific information as to wether it would work. So if you could supply any information on sustaining ...

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by widget
Fri Oct 27, 2006 4:25 pm
 
Forum: Zoology Discussion
Topic: bioluminescence
Replies: 2
Views: 1260
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