Types of Photosynthesis in Plants: C3, C4, and CAM

[@maryamshariif3909]

Hello professor dave I am from Somalia And I have been watching you two years ago and i have benefited a lot from you thank you

[@hassenfuad7258]

for*

[@madsubhash]

You have Wi-Fi there?!

[@arielthemermaid3576]

@@hassenfuad7258 wrong. It should go “I have been watching you” -> “I began watching you” because she said “two years *ago*”

[@mubashiraashraf2722]

Nice

[@ahmadmuhdi190]

@@arielthemermaid3576 insert meme "why are you the way that you are?"

[@sowmyarampoore3715]

That’s really cool professor. I am sitting for most toughest competitive exams in India and your videos are making my exam preparation easier. Thank you for your effort 👍🏻

[@Justanov]

Which exam? NEET?

[@subratabhattasaly3012]

Neet?

[@ashely1325]

I’m studying for Neet

[@kittujasthi88]

Me too !!

[@Khadiryusufhassen]

Nothing 😊

[@robfreiman8822]

Thank you Professor Dave! Just the video I needed! As always, very well done!

[@markdelaney9143]

I've learnt alot from dave over the years 👍

[@kitthecat0274]

professor dave always comes in clutch the night before an exam. thank you!!

[@nitin6640]

*I learnt all the three processes in just one video. Thanks*

[@kullaninasir6790]

Hello i am from Ethiopia 🇪🇹

[@User_f2348]

Me to

[@obsanhabtewold-hu3ch]

Same here, hi

[@NyakuruRose]

Hi am from uganda😅😅

[@blackbeard9545]

My first interaction with this topic was a 2nd year university assignment that asked to explain Kranz anatomy.

[@somyaagarwal627]

your video helped me gain 6 free marks in my endsem exams thank you so much.

[@chrisdavidson6838]

He knows a lot about the science stuff. 👏🏽

[@Voerh_mavetali]

Thumbs up if you are watching this before writing Biology test.

[@nstar6412]

😅

[@ultrapromax5902]

I am form india and subscribe you. Thanku so much professor Dave

[@ezudinezere6034]

Tnx Dave one day I will pay your gratitude

[@TheFarmacySeedsNetwork]

Really well explained my friend! I'll be linking to this video!

[@imdadullah8691]

Unmatchable, great sir dave

[@anushkachaturvedi3513]

Here since 90k!

[@sudarshangubbala9265]

Love from south India

[@CalraIsaac]

This is my first time of listening to you and I Guinea lots from it

[@rushil1498]

This was amazing. Thank you!

[@AshishTeli-t3d]

Thanks man It's very helpful

[@hgt9097]

wow what an explanation brilliant🙃

[@charlesjmouse]

I am continually amazed by the breadth of subject Prof Dave does videos on. Rubisco is such an interesting enzyme. It's just about the most common enzyme you'll find in any plant cell, is incredibly slow by enzyme standards, and doesn't much care what direction it catalyses. Yet it's one of the most ancient and highly conserved enzymes in existence. What's been driving that 'lack' of evolution for billions of years when one would expect plants would really 'like' something better? My best guess is it initially evolved to 'soak up' O2 when all life 'regarded' oxygen as a poison. For such a purpose you want: -a lot of it to 'catch' every oxygen molecule as soon as possible -so it didn't need to be efficient -it did need to work so once functional there would be huge evolutionary pressure not to 'experiment'. Some life discovered photosynthesis and Rubisco turned out to be useful for that as it would run backwards. Great, but now you need even more of it because 'whoops, there's even more of that nasty oxygen about!' So the pressure not to mess with a functional solution gets even bigger. Finally you get some cells discovering the trick of aerobic respiration and so a poison becomes useful, when its not being poisonous. Before you know it you've got eukaryotes; the aerobic heterotrophs don't need Rubisco any more and ditch it, but the autotrophs are stuck with it warts and all. It's a nice story, I'm afraid I'm not knowledgeable enough on the subject to know if it might be true.

[@soumithraanand6377]

DO YOU KNOW that RUBISCO is the most abundant enzyme in world ....awesome right🥳

[@sachitsharma1661]

For me it was the the most shocking when i got to know it was made by genomic and extra genomic DNA both in plant cells chloroplast

[@omegahaxors9-11]

It hasn't evolved because they take the factorio approach; they just spam more of it to make up for lower efficiency

[@republicofprogaming785]

2:04 "Burn through carbon previously fixed by the Calvin cycle" what does that mean

[@ProfessorDaveExplains]

Check out my original tutorial on photosynthesis for the general information.

[@hanisgowdahani7064]

Hey it means it uses atp previously fixed by the c3 pathway to release co2

[@lucasmartin9196]

Very helpful for my plant fisiology class, thank you :)

[@manbiteslife3110]

is there hope?? I feel like there is too much information to learn

[@pietershiffler4089]

Thank you Professor Dave, this was very helpful for my upcoming ecology exam!

[@ltsfreerealestate]

Crushed it, Dave.

[@AchAzrin]

That's really cool... Thanks for your effort sir

[@aaryajain6396]

I have my exam on this tomorrow thanks so much Dave!!!!

[@baran_ot12]

Perfect, thank you

[@calebmunyaradzikambare3380]

Dis z excellent. Thank u 💓

[@Coding-Yogi]

Thanks 💖💖

[@発展途上国から日本へ在]

No shit guys, he knows alot about the science stuff (unlike those flat earthers out there)

[@THIS---GUY]

Dave this has nothing to do with this video. I just watched your discussion with Jesse Lee Peterson and had a good laugh. Hyperbole vs logic at its finest. Thanks for your awesome channel, whether educational or educational I rest my case

[@Letsbecurious29]

Wonderful explanation

[@yakikalasi7112]

Thank you very much professor Dave😍

[@PrabhavBenara]

awesome explanation

[@sriwulandari5060]

Thank you Professor Dave. Nice video !👍

[@MultiRedhammer]

The resulting 4 carbon compound? How is malate formed in the mesophyll cells from OAA??

[@sunergi]

that process is called Carbon fixation, or in other words transforming carbon dioxide into other forms to store and to be used later, like into Malate or malic acid. it is then transformed back into co2 and used in the photosynthesis. just like storing sugar into fatty acid, and then transformed back into sugar when needed.

[@Dhikkariyayanissaran]

Malaye dehydrogenase enzyme

[@nca19750975]

Hi! Could you please give the wide list of c3 and c4 plants.

[@iramkalsoom6454]

Thank you professor Dave this is very helpful for my lecturer biology test

[@pragyayadavxls2207]

Information is Insufficient But explained adequately than my school teacher

[@ashely1325]

So mean

[@rayyurayyu3412]

Thankyou professor...i am from india preparing for neet medical exam and looking for a vedio which will help me.....and here is the vedio of you welcoming me all the way along....thanks from ma heart❤️

[@esha6221]

thank you so much 👍

[@jana6359]

Thanks that's really helpful

[@varunij5824]

Yo Professor 👏🏻

[@FrostDirt]

Thanks Dave, would've helped me last semester.

[@allianmariena-ong3902]

I don't understand how to calculate this problem. Consider the fixation of carbon dioxide leading to the production of an amylose chain 30 glucose sub units long. Calculate the following: (a) the number of CO2 molecules fixed; (b) the number of ATP molecules consumed; (c) the number of NADPH molecules oxidized.?

[@sunergi]

kzbin.info/www/bejne/infClJJvfN6CmKssi=k-jA453sMRfsDI4D

[@nayantiwari537]

Love ❤ from India

[@sharonsibanda7530]

You are good at explaining sir thank you.

[@sandeepsoni7301]

Thanku sir nice 👍🏿 session

[@writwits5826]

Thank you Professor Dave! This is the video I needed to learn this! Now I know this!

[@Keerthanarts]

Does CAM plants contains PEP carboxylase and RuBisCO??????

[@MEXTguide_yoyo]

This was helpful

[@backstreetfan2887]

Very nice, thank you for doing this topic

[@adenho230]

Can always count of prof dave. Looking forward to a question on this on my final thanks to you.

[@ev9998]

Thank you

[@geetugupta7244]

Thankyou so much....

[@TonyPepperoni-y3t]

Do you consider this high school or university level biology?

[@ProfessorDaveExplains]

I think freshman undergrad.

[@ianbates1964]

Really enjoyed watching this video - thank you

[@IzabellaGonzalez-z2v]

wow thank you thank you thank you!!!!

[@stbrmilku]

nice, clear differentiation! learned lots :)

[@adarshbhat9453]

Thank you sir ,

[@rubengomes3883]

Not going to lie. I saw the thumbnail and I thought it was a meme trying to show how one should drive in a roundabout... And now I feel like it should be

[@FreemanVashier]

For the legal states, you can add Mj as a C3 plant

[@FullAnarchyDotNet]

But what about Portucala Oleracea (common purslane) a plant that does factultative cam and c4 photosynthesis :D

[@NareshKumar-om2dh]

thankyou i am in 10th and your video helped me a lot to understand this topic easily

[@Just_KshitizTiwari]

Ah! The another nice one

[@essahsaeidi5543]

definitely helped, especially when I slowed the speed down by 25 %.

[@sagarak999]

Thank you for the video. So are there any angiosperms that have conversantly evolved to do C4 photosynthesis?

[@ashmiko]

Wow 🤩

[@coreyalyn2249]

I just got some plants last week and in the midst of being a millennial struggling to keep plants alive, I was thinking about this exact thing. What a happy surprise

[@鶴岡市リット]

In CAM plant, when O2 release into environment? If answer night, where is the O2 in the daytime?

[@sunergi]

CAM planta do photosynthesis during daytime, since they still need Sunlight to do the process. and oxygen is a byproduct of photosynthesis so oxygen is also released during the daytime by plants. while CO2 is always around too, 24/7

[@鶴岡市リット]

@@sunergi Are CAM plant' stomata closed during daytime? Where is O2 leave? Pl. kindly explain.

[@dorotheufarias]

The other videos are appearing private to me. Is I because they are not released yet?

[@ProfessorDaveExplains]

Yep they'll all be out soon!

[@dorotheufarias]

@@ProfessorDaveExplains that's great! I'm waiting :) thank you, for the response and the videos, great explanations! I found them recently, and they are helping me understand plants better. I have a dream to some day start building agroforests, and these biology foundations I find very important!

[@bramsturk619]

Thanks!! really clear!

[@nannyondobridget7007]

I like it thanks

[@iot3136]

Thank you very much for your video. If they are all angiosperms- why would convergent evolution? Was that only for specific metabolic pathways

[@thaongo7948]

Wait... in CAM plants, didn't you just say it open the stomata to keep H2O? And then you say during the day, it closes the stomata to keep H2O. Can you bring clarification?

[@Murmu94]

From India

[@Positive_quotes001]

Me too

[@josephmoleski6244]

I don't watch you to learn, i watch you to laugh. (that was a compliment i find u funny idk y)

[@아아만취급]

머리속이 한번에 정리 되었네요 감사합니다!

[@Stonner911]

In c4 plants where does the carbon dioxide comes from ???

[@nurefsan24]

I am asking the same thing but cannot find the answer

[@asifbrohi9818]

i think from mitochondria a little amount off carbon dioxide came

[@asifbrohi9818]

i think from mitochondria

[@鶴岡市リット]

Where (cell) is chloroplast in cam plants?

[@sunergi]

for cactus, its entire body is the would-be leaf that does photosynthesis. while the Thorns or spikes evolved into protective features instead, if they remain as leaves then they would lose water

[@coldloyalty]

Does this count towards anything for his continued education programs?? It definitely should

[@alexanderx33]

Does this mean that CAM plants would die if they were kept under continuous light?

[@sunergi]

not really, they need light to do photosynthesis. but they dont get dehydrated because they evolve to keep stomata close during the day, and opens during the night.

[@alexanderx33]

@sunergi ... woosh. I mean, if they only open their stomata at night, would they suffocate and never have co2 to breath if you just kept them under a grow light 24/7. Is it darkness itself that triggers the stomata opening, and how strict are they about that responce. In nature there would be no situation that would prepare them for 24/7 light. Cacti don't live above the arctic circle.

[@youremom5463]

Why isn't this in your botany playlist

[@ProfessorDaveExplains]

it is

[@ajieacwemik]

When you can't understand this thing at school, but you understand this here

[@knowledge_is_virtue]

Nice

[@nathanbailey2229]

Searched C3 vs C4 and came here. I wanted corvettes but instead I got science

[@frankchen4229]

How about a series on the history of STEM? from all the way back to the egyptians bolstering the development of the geometry field to modern mathematicians like Terence Tao?

[@funnyonly8535]

Great

[@jalapenoandbanana]

I had no idea

[@frncepwd]

🙌🙌🙌

[@cguy96]

P. Dave. I just spent 2 days tying to teach someone what the “scientific method” is. They were convinced that the only “real” science was a strict adherence to “observation”-“hypothesis”-“experiment”... and that experiment was only “manipulating” a single IV and seeing how a single “DV” was changed. I was sadly ineffective in my discussion. Maybe a couple of videos from you in this topic could be helpful?

[@marcmarc172]

hell yeah

[@haidershaker7103]

Thank you very much.can you add references to the video.if this is possible?

[@srikanthpawar8466]

I'm from India 🇮🇳

[@Motofanable]

Aren't all grasses C4?

[@Displ4c]

This will never enter my brain

[@antimatter31]

" Can a dog come from a protista? " - Kent Hovind 😂

[@Zakariae_bs]

❤🇲🇦