The Nitrogen Cycle!
Transcript:
Because the earth is finite, matter has to be reused and recycled over and over again. So, the atoms that are in you, were once in the air, in soil, in water, and in rocks. These atoms have also been used by countless other living things, from dinosaurs, to broccoli plants, to Abraham Lincoln. And after they leave you, they will become part of other living things or of the environment. This recycling of matter is known as a nutrient cycle and there are several different nutrient cycles for different elements. Today, we will focus on the nitrogen cycle, the process by which the element nitrogen moves around in ecosystems.
The nitrogen cycle is crucial for all life on earth because nitrogen is needed to make some of the most important molecules for life, including DNA, RNA, and proteins that are needed by ALL living things. Without nitrogen, there would be, literally, no life as we know it. So, it’s important to understand at least a little bit about how the nitrogen cycle works, right? Let’s get into it!
Nitrogen Gas (N2) makes up about 78% of our atmosphere. You breathe it in and out all the time. In fact, you’re doing it right now! The problem with N2 is that you can’t use it to make any of the cool molecules we just discussed. The 3 bonds between the nitrogen atoms in N2 make it very hard to break apart so you can’t do any reactions to make DNA, or RNA, or proteins, or anything else. The nitrogen atoms are essentially superglued together.
Luckily, there are certain bacteria that can break the triple bond of nitrogen gas to make something that organisms can use. These bacteria are called nitrogen-fixing bacteria and they are found in the soil and in root nodules of certain plants known as legumes, as well as a few other places. These nitrogen-fixing bacteria break nitrogen gas apart and add hydrogen atoms to it to form ammonia (NH3), or ammonium (NH4+).
This process moves nitrogen from the air to the soil and is called nitrogen fixation because the nitrogen in the air is getting “fixed” so that other living things can use it!
Ammonia can be taken up by plants and used to make important biological molecules like DNA and proteins etc. This process of uptake and production of biological molecules is called assimilation.
But not all of the ammonia produced by nitrogen fixation gets assimilated into plants. Too much ammonia can be toxic, and sometimes plants prefer to assimilate other nitrogen compounds called nitrates. Our next step is the conversion of ammonia into nitrates, a process called nitrification.
Nitrification is done by nitrifying bacteria. These bacteria oxidize or add oxygen to ammonia in chemical reactions that first convert the ammonia to nitrite (NO2-) and then to nitrate (NO3-). Because oxygen is needed for these reactions, nitrification happens best in soils that are well-aerated.
Like ammonia, nitrate is a plant fertilizer because it can be assimilated and used to make key biomolecules (DNA, RNA, Proteins etc.).
Once nitrogen is inside of plants and used to build our sweet biomolecules, it can pass to other living things through food webs. When an animal eats the plant, the nitrogen-containing compounds in the plant move to the animal. When that animal gets eaten, nitrogen moves to its predator, and so on.
Eventually, all living things die and decompose. This returns the nitrogen back to the soil as ammonia in a process called ammonification. This ammonia can now be used again by plants or converted to nitrates by nitrification. And so, nitrogen gets cycled around and around, over and over again.
But we are still missing one key part of our cycle. In order to have a complete cycle, nitrogen gas needs to get back into the air. This is done by denitrifying bacteria and is called denitrification. During denitrification, bacteria convert nitrates (NO3-) into nitrogen gas (N2). Denitrification happens best in low oxygen environments, like waterlogged soils, and it reduces the fertility of the soil. This is one reason why it is harmful to overwater plants...
For the remainder of the transcript, please visit BioMan Biology here: biomanbio.com/HTML5GamesandLa...
00:00 Intro to Cycles
00:31 The Nitrogen Cycle
01:05 Nitrogen Fixation
02:29 Assimilation of Ammonia
02:42 Nitrification
03:33 Assimilation of Nitrates
03:45 Food Chain Movement of Nitrogen and Ammonification
4:20 Denitrification
05:00 Quick Review
Credits:
Soil background image: Image by brgfx on Freepik
Legume root nodule image: Frank Vincentz, CC BY-SA 3.0 via Wikimedia Commons
Earth Rotating Clip: Video by freepik
Brocolli pic:Image by Racool_studioon Freepik
Dinosaur: Image by wirestock on Freepik
Cat animation: by Freepik
BIRD ANIMATION: Image by Freepik
Sound Effect from Pixabay
Violin Music by FreqMan (sampled and shortened to fit relevant part of video) : freesound.org/people/FreqMan/...
Пікірлер: 466
Who else are watching it for the exam tomorrow 😂
@BioManBiology
7 ай бұрын
I hope it helps for your exam!
@jamyangchoki2401
6 ай бұрын
Yea it helped me today .... It came and I even drew the diagram ....Thank you alot may god bless you🇧🇹💟
@firdossayyed4581
3 ай бұрын
Me
@user-mu9yd4sx6t
2 ай бұрын
I'm watching it for my exam in 4 hours😂
@user-mu9yd4sx6t
2 ай бұрын
Got exam in 4 hours😂
best explanation, he basically summarized 3 school lessons in 5 minutes, i love the animation too.
@BioManBiology
12 күн бұрын
Thanks, I'm glad you enjoyed it!
I've got a test tomorrow on this stuff, thx for making a video that's simple to understand!
@BioManBiology
19 күн бұрын
I'm glad you found it easy to understand! I hope your test went well! Thanks for your comment!
Literally watched so many videos but none of them made sense. This one however, was simple and easy to understand. Appreciate it a lot, especially cause I have exams next week. The added humor also was definitely my cup of tea!
@BioManBiology
Ай бұрын
I'm glad to hear that you enjoyed the video and that it was helpful! Thanks for your comment and good luck on your exams!
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@BioManBiology
7 ай бұрын
Thanks, I'm glad you are enjoying them!
Thanks. About to biology test and this was the last thing I needed to review
@BioManBiology
2 ай бұрын
You're welcome and best of luck on your test!
It helps me a lot tomorrow is my exam thanks a lot ❤❤
@BioManBiology
8 ай бұрын
Great to hear! Thanks for your comment!
@pramodini50
8 ай бұрын
@@BioManBiology welcome sir and it helped me a alot
@jamyangchoki2401
7 ай бұрын
I am also watching it because tomorrow is my exam 😂
@damonmahabir8047
6 ай бұрын
Bro me too 😂😂
@laraharoun7651
6 ай бұрын
Me too. Oh my God.
thank you so much for this! my bio teacher barely taught us and I've been freaking out about the exam and this cleared all my doubts in such a simple way!! - the game as well is so innovative and helpful to test our knowledge! you have earned yourself a new loyal subscriber :))
@BioManBiology
8 ай бұрын
Thanks, I'm glad to hear that it was helpful! And thanks for subscribing! All the best to you!
@nourniquransikhy
2 ай бұрын
No complain about teacher ❤😢😊
Thankyou! I was struggling badly with this concept but you've perfectly outlined it in a way that I can understand 🙂
@BioManBiology
9 ай бұрын
I'm glad to hear that it helped! Thanks for your comment!
Small thing: the atmospheric nitrogen can directly be converted to nitrates in soil by lightning due to the amount of energy provided by the lightning that can break the triple bond
@BioManBiology
12 күн бұрын
True!
This was super clear and well organized, thank you for making this! 💯
@BioManBiology
7 ай бұрын
Thanks, I'm glad you enjoyed it!
Thank you! I have a random test this week and I haven't gone over this content in like 2 years.
@BioManBiology
8 ай бұрын
You're welcome! Good luck on your test!
I need this for an exam in Aquatic ecology next week. Thank you, it was very helpful. You earned yourself a new subscriber.
@BioManBiology
9 ай бұрын
Thanks, I'm glad it was helpful! And thanks for subscribing!
@scy1038
8 ай бұрын
Gl on your test. Mine is in 400 environmental technology. We got this!
@rutgerniemeijer
8 ай бұрын
@@scy1038Good luck to you too!
This cleared all my doubts, please keep on making other videos like these. I think you should make one more video with all the reaction which happen in this nitrogen cycle along with the formation of proteins and all
@BioManBiology
2 ай бұрын
I'm glad it was helpful! I have more videos in the works! Thanks!
@danslandmunro351
2 ай бұрын
@@BioManBiologycould you please do water cycle? Very good video
Thank you so much! I was stuck on this topic for hours, but this video explained it all to me! I'm planning to take an early acceleration exam, so I'm studying everything that will be covered in it. Thanks again!
@BioManBiology
4 ай бұрын
I'm glad it was helpful! Best of luck on your exam!
Great video! Very informative and well done. Way to take a complex concept and make it understandable. Thank you!
@BioManBiology
9 ай бұрын
Thank you!
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@worldtrooperwithdhruv8414
Ай бұрын
Bilkul
@ritikaranot7836
Ай бұрын
Yupss
@Agrima_8888
20 күн бұрын
Yes
quick and easy compared to the other videos ive seen. thx man
@BioManBiology
3 ай бұрын
Cool, I'm glad you found it helpful! Thanks!
good luck with your igcse exams everyone
@BioManBiology
Ай бұрын
👍
Thank you man, i really needed this for my presentation, thx alot!
@BioManBiology
8 ай бұрын
You're welcome, I'm glad you found it useful!
thank you for taking your time to explain it so well🙏🏾
@BioManBiology
2 ай бұрын
You're welcome, I'm glad you found the explanation helpful!
Phenomenal! I will be using this in my classroom tomorrow!
@BioManBiology
9 ай бұрын
Thanks, I'm glad to hear that! All the best!
I still dont understand how dose this guy teaches better than my teacher and is free 😂
@BioManBiology
Ай бұрын
I'm glad you enjoyed it!
the animation of the bacteria and the accents made it all more fun! looking forward to ur videos!!
@BioManBiology
4 ай бұрын
I'm glad you enjoyed the video and the accents! Thanks for letting me know!
thank you so much for making my concepts crystal clear ❤ you deserve millions of subscriptions❤
@BioManBiology
Ай бұрын
Thanks for your comment! I'm glad the videos are clear and helpful to you!
This is really a fantastic illustration and explanation of the nitrogen cycle. So cool, thank you very much.
@BioManBiology
6 ай бұрын
Thanks, I'm glad you enjoyed it!
after a long struggle trying to understand this i finally did thank you so much really helpful have my igcse exams soon
@BioManBiology
8 ай бұрын
I'm glad it helped! Good luck on your exams!
thanks a lot mr. bioman. btw - nice editing and music. keep it up.
@BioManBiology
3 ай бұрын
Thanks, I'm glad you enjoyed it!
You made the nitrogen cycle so simple to learn! 😮😮
@BioManBiology
Ай бұрын
Thanks, I'm glad you found it helpful!
I was stressing because I have a test tomorrow, but now I found this video and I think I am prepared! Big thanks!
@BioManBiology
7 ай бұрын
I'm glad to hear that the video helped! Good luck on your test!
@m_emetube
7 ай бұрын
@@BioManBiology Thanks!
3:43 yes fr a deja vu 😄btw nice editing and clear explanation📈
@BioManBiology
2 ай бұрын
Thanks, I'm glad it was helpful!
I saw many videos for this lecture but this video make my concept 100% clear thanks sir you deserve million of subscribers ❤❤
@BioManBiology
Ай бұрын
Thanks, I'm glad you found it helpful!
explanation is so clearrr thank youu!!!!
@BioManBiology
2 ай бұрын
Thanks, I'm glad you found it clear and helpful!
LOLLLL THE LITTLE CHARACTER NOISES ARE SO FUNNY 😭😭😭 anyways this is so informative and comprehensive!!! thank you so much!!! (studying for the AP environmental exam and the information is a lot to digest sometimes)
@BioManBiology
2 ай бұрын
😄 I'm glad you enjoyed the video! Thanks for your comment and best of luck on the AP Environmental exam!
Your videos help alot in understanding the concept 😊
@BioManBiology
8 ай бұрын
I'm glad to hear that! Thanks for your comment!
Love this video! I watch it every day :)
@BioManBiology
4 ай бұрын
😄 Thanks!
Your videos r so helpful. Please make more so we can benefit
@BioManBiology
8 ай бұрын
Thanks! I am working on more for sure! I have one on osmosis that should be out very soon.
The world needs more people like you bro
@BioManBiology
14 күн бұрын
Thanks, I'm glad you are finding the videos helpful!
Please this really helped me thanks. May we also get a video about the heart and lungs , it’s parts and functions ?
@BioManBiology
2 ай бұрын
Thanks, I'm glad it was helpful! Great suggestion too! I hope to get to more videos soon!
Thank you, this video was so clear and concise! I hope you do a video on the carbon cycle sometime❤❤❤
@BioManBiology
7 ай бұрын
Thanks, that is a good idea!
Thank you for this video so much it helps me a lot for my seminar
@BioManBiology
5 ай бұрын
I'm glad to hear that! Thanks for your comment!
Thank you so much !!! Very helpful 👌 ❤😊
@BioManBiology
2 ай бұрын
Glad to hear it! Thanks for your comment!
Hello i really found this video helpful is there any chance you could do the phosphorus cycle as well please 😁
@BioManBiology
Ай бұрын
Thanks, I'm glad you enjoyed it! I do hope to make a phosphorus cycle video eventually, but it will probably take a while. All the best to you!
Thank I had exam tomorrow you explained soo good You earned a subscriber Dont leave channel and more video like this
@BioManBiology
8 ай бұрын
Thanks, I hope your exam went well! More videos are on the way!
Thank you i needed this for civil engineering exams.
@BioManBiology
4 ай бұрын
You're welcome! Best wishes on your exams!
Thank you that helps a lot❤
@BioManBiology
6 ай бұрын
You're welcome! I'm glad to hear that!
Good, this video is actually helpful.. It make me understanding all about it.. Btw I m in 8th class studying microorganisms freind or foe and it make me understood 9th class science... Thnkz
Great video really helpful for some revision the night before my exam thanks a lot 🙏👍
@BioManBiology
Ай бұрын
Thanks, I hope your exam goes well!
bro this helped so hard u a real one
@BioManBiology
4 ай бұрын
Great to hear! I'm glad it helped! Thanks!
Thank you for this wonderful video
@BioManBiology
16 күн бұрын
You're welcome, I'm glad you enjoyed it!
What a great video. Thanks so much.
@BioManBiology
6 ай бұрын
Thanks, I'm glad you enjoyed it!
Thank u,very useful helped me a lot
@BioManBiology
8 ай бұрын
That's great to hear! Thanks for letting me know!
I am watching it for test tomorrow, thnk you for duch easy explanation
@BioManBiology
8 күн бұрын
Cool, good luck on your test! Thanks for your comment!
Thans darling this was VERY helpful. (my exams tomorrow). I really love the animation and wording you use especially the bacterias with the farts and stuff. I appreciate your effort thanks a lot and keep it up dear.
@Believeyourself1234
3 ай бұрын
11th boards??
@BioManBiology
3 ай бұрын
I'm glad it was helpful and best of luck on your exams! Thanks!
Thank YOu sooooo much I needeed this more than I would have thought it saved me from having to understand it from a book! Thank you 😁😁😁
@BioManBiology
3 ай бұрын
You're welcome! I'm glad it helped!
@PsychologyQueen-1945
3 ай бұрын
@@BioManBiology 😍
Really a great teacher you are. Your teaching method are outstanding ❤. In few days I have exam and it helps me alot. Lots of love from Pakistan ❤
@BioManBiology
Ай бұрын
Thanks, I'm glad you enjoyed it! Best wishes on your exam!
Thank you so muchhh, i have an exam tmrw lmao
@BioManBiology
4 ай бұрын
You're welcome! I hope your exam went well!
Thanks it helped a lot 👍🏻
@BioManBiology
Ай бұрын
I'm glad to hear that! Thanks!
So helpful! Thank you!
@BioManBiology
3 ай бұрын
I'm glad to hear that! Thanks for your comment!
this video is really helpful. thanks
@BioManBiology
2 ай бұрын
You're welcome, I'm glad to hear it was helpful to you!
Thank you very much for this video
@BioManBiology
8 ай бұрын
You're welcome, I'm glad you enjoyed it!
thank you so much i was so confused until i watched this video!! this will definitely help me on my exam
@BioManBiology
7 ай бұрын
I'm happy to hear that! Good luck on your exam and thanks for your comment!
very nice explanation thank you so much!
@BioManBiology
8 ай бұрын
Thanks, I'm glad it was useful!
Thank you its clearly understandable
@BioManBiology
5 ай бұрын
That is good to hear! Thanks for your comment!
Very educative love it! Thank 👍🏾👍🏾👍🏾
@BioManBiology
3 ай бұрын
Thanks, I'm glad to hear that!
Thank you so much for the video
@BioManBiology
4 ай бұрын
You're welcome! I'm glad you enjoyed it!
So basically everyone is scrambling to have nitrogen not be useful again
Thank you so much this will help me so much for my exam next week!!
@BioManBiology
7 ай бұрын
I'm happy to hear that! Good luck on your exam!
Thank you so so much!
@BioManBiology
9 ай бұрын
You're welcome, I'm glad you enjoyed it!
This helps alot thx
@BioManBiology
3 ай бұрын
Great to hear! Thanks!
Thx man take my heart ❤😂 The first video and the last one ... I understand it now
@BioManBiology
7 ай бұрын
Glad to hear it was helpful to you!
The deja vu scene was funny Ur good man..i enjoyed learning this🎉🎉 Wow i even subscribed you😂😂😂😊😊😊❤
@BioManBiology
5 ай бұрын
I'm glad you enjoyed it! Thanks for subscribing and for your comment!
The butler hahaha definitely how I’m gonna remember the nitrifying bacteria
@BioManBiology
9 ай бұрын
😄 I'm glad the butler resonated with you!
thanks a lot this really helped
@BioManBiology
7 ай бұрын
I'm glad to hear that! You're welcome, and thanks for your comment!
Bruv i couldnt learn it from my teacher but you just cleared my year old doubt. Thanks!
@BioManBiology
5 ай бұрын
I'm glad it helped! Thanks!
That was a very nice explanation
@BioManBiology
3 ай бұрын
Thanks, I'm glad you liked it!
Thank you so much 🙏🏻🥰
@BioManBiology
3 ай бұрын
You're welcome!
Such a fun way to learn ❤
@BioManBiology
5 ай бұрын
Thanks, I'm glad you enjoyed it!
Good lesson Thank you for your sharing ❤❤❤
@BioManBiology
7 ай бұрын
Thanks, I'm glad you enjoyed it!
Thank you !Live saving❤
@BioManBiology
5 ай бұрын
Cool, I'm glad it helped! Thanks for your comment!
Well explained! 🎉 thankuu
@BioManBiology
2 ай бұрын
Thanks, I'm glad you enjoyed the explanation!
First, this is a great video. It is super clear, concise, and digestible. One clarification; it says repeatedly that plants use AMMONIA (NH3) during assimilation, but isn't this incorrect?Plants can NOT use AMMONIA, they can only use AMMONIUM (NH4)... unless I am missing something. I have not found a single source that claims plants can use AMMONIA (unless they are incorrectly using AMMONIA and AMMONIUM interchangeably as the same).
@BioManBiology
7 ай бұрын
Thanks, I'm glad you enjoyed it! In the video I chose to use the term ammonia to represent both ammonia and ammonium (its ionized form) because it was too clunky to say both terms every time. I agree that many sources refer to ammonium uptake by plants, but there are others that refer to ammonia uptake. Here are some for reference: 1. www.cell.com/trends/biochemical-sciences/fulltext/0968-0004(76)90319-4 2. cdnsciencepub.com/doi/10.4141/cjps2011-135 So, I'm not sure if the distinction is very important. It seems the terms are often used somewhat interchangeably, but that ammonium is probably more common in soil due to the ionization of ammonia in water. I hope that helps. Thanks for your comment!
Thank you I hsve an exam in a few hours and i instantly got it with this video
@BioManBiology
2 ай бұрын
I'm glad it was helpful! Best wishes on your exam! Thanks!
Very educative thanks
@BioManBiology
Ай бұрын
Cool, I'm glad you found it helpful! Thanks!
Oo. Woww..😊really good method😂loved it... Tquuuu🎉❤❤
@BioManBiology
4 ай бұрын
Thanks, I'm glad you enjoyed it!
Very good and interesting explanation 👍
@BioManBiology
9 күн бұрын
Thanks, I'm glad you enjoyed it!
make one for the phosphorus cycle pls ! :D
@BioManBiology
Ай бұрын
Good idea! I hope to do so eventually!
Thank you very much ❤
@BioManBiology
7 ай бұрын
You're welcome! Thanks for your comment!
Thank u so much. It helped me a lot because tomorrow I have my bio examination 👍
@BioManBiology
3 ай бұрын
You're welcome! I hope your exam went well!
This make me laugh 😅❤️ so creative and clearly mentioned all the things 😍
@BioManBiology
4 ай бұрын
Great, I'm glad you enjoyed it! Thanks!
My friend told me bout this video, very nice
@BioManBiology
Ай бұрын
Thanks, I'm glad you enjoyed it!
Very attractive presentation and simple explanation 😇
@BioManBiology
8 ай бұрын
Thanks, I'm glad you enjoyed it!
I'm Egyptian and I love this video Thank you 💕
@BioManBiology
Ай бұрын
I'm glad to hear that! Thanks for your comment!
Thank you soo much
@BioManBiology
Ай бұрын
You're welcome! I'm glad it was helpful to you!
Ty very much that explanation was better than my teacher I have a final exam tomorrow and that helped me too much 😁🖤
@BioManBiology
4 ай бұрын
I'm glad it helped! Best of luck on your exam!
Thank you so much! This helped me a lot in my exam😁 Could nitrogen get into soil by lightnings?
@BioManBiology
7 ай бұрын
You're welcome! Yes, lightning also adds nitrogen to the soil as well (as nitrates). Bacteria are more significant, but lightning also plays a role. Thanks for sharing! I'm glad this helped on your exam!
Thanks man! Today is my exam and this really helped!
@BioManBiology
2 ай бұрын
You're welcome, I hope your exam goes well!
Thanks man! I had a test recently and got a 3.5/4!
@BioManBiology
7 ай бұрын
Cool, I'm glad it helped!
Thank you ❤
@BioManBiology
Ай бұрын
You're welcome!
Thanx so much❤❤❤
@BioManBiology
2 ай бұрын
You're welcome!