Heterocysts: Nitrogen Fixation in Cyanonacteria

Biology Professor (Twitter: @DrWhitneyHolden) discusses the function of heterocysts, specialized cells in cyanobacteria that enable it to fix nitrogen in compartments that are separate from its photosynthetic processes. This practice is an example of microbial cooperation where two cells share metabolic products for their mutual survival. The biochemical reason (nitrogenase and its need for an anaerobic environment) that underlies the need for this compartmentalization are also described.

[@ramakrushnaswain.9085]

Im from. India nd tomorrow is my exam day....im so glad to see nd learn Something good about this topic

[@ayushtripathi6791]

Wow mam ty so much..
Love from India 💕

[@edgardoreyes7545]

This was brilliant and very useful! Thank you

[@TylerPilz]

Thank you so much! Really helped me at my cyanobacteria biology homework!

[@mansuralom8967]

Well explained mam .... Thanks for this videos...soo helpfull....Have a Goodday ..

[@meetmahakdixit7363]

can you please post a video on topic development of heterocyst

[@abhinavatreya9178]

So heterocysts aren't themselves living cells but can only fix nitrogen and communicate with the "living" cells , then why do we still call them unicellular (for they are unable to perform all functions alone). moreover can we say heterocysts are "living" ??

[@BiologyProfessor]

I think heterocysts are definitely alive. They are just highly specialized.

[@abhinavatreya9178]

@@BiologyProfessor oh cool
Thanks a lot ❤️❤️ love your content

[@adarsh65kumar]

The information you gave here was good, but I actually clicked on this video looking for an explanation on the reaction process involved in turning nitrogen gas into ammonium.
Thanks anyway.

[@mosaic.emom1234]

Did heterocysts come into existence because of nitrogen-depletion of Precambrian ocean?please anybody should help me with the answer if u know

[@meetmahakdixit7363]

actually heterocyst are cells which when in anaerobic condition nitrogenase enzyme become in active due to oxygen they mainly activates the nitrogenase by providing anaerobic invironment

[@JANTH]

I would never miss a class 😭

[@MartianLivesMatter]

Do you know what a heterocyst would look like in a hollow sphere colony of cyanobacteria?
Technically how large could they get? Could one be grown?

[@anokhi_species]

Its really helpfull thanku mam

[@kanmuzamil786]

this was good for concept

[@hemajpawar9343]

it was very useful information, thanks mam.

[@BiologyProfessor]

You are welcome. Thanks for watching

[@srini1841]

Does this bacteria fix ammonia in water body

[@Teawithlee]

Fantastic 👍🏼

[@anamikapandey394]

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[@kanmuzamil786]

best lecture

[@مريمحوراء-ص9ل]

thanks dear

[@Archis1999]

Thanks a lot.

[@papihakaundal1424]

Ma'am, do heterocysts too help in reproduction?

[@meetmahakdixit7363]

yaa they are a kind of archaic reproductive cells because they secrete certain substance which stimulates cell division

[@puneetkaur3911]

Brilliant ma'am

[@janmauuoskkshhh2346]

Great video! Can anyone relate this to the akinetes

[@BiologyProfessor]

Akinetes are a separate cell type possible in filamentous Cyanobacteria that are not covered in this video. More info here:. en.m.wikipedia.org/wiki/Akinete

[@katilyt5372]

Very good m

[@adventureandtravels3149]

Nice

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Why it is necessary

[@AS-mm4pn]

I saw some of your past lectures and you are much thinner now ,and don't take it otherwise but you look extremely beautiful😍 nowadays .By the way this was really helpful as always.👍

[@sameersamuel4693]

Thnkuu

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excellent lecture!! also ure so cute

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You are beautiful n u teach well

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