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
@hassenfuad72583 жыл бұрын
for*
@madsubhash3 жыл бұрын
You have Wi-Fi there?!
@arielthemermaid35763 жыл бұрын
@@hassenfuad7258 wrong. It should go “I have been watching you” -> “I began watching you” because she said “two years *ago*”
@mubashiraashraf27223 жыл бұрын
Nice
@ahmadmuhdi1902 жыл бұрын
@@arielthemermaid3576 insert meme "why are you the way that you are?"
@sowmyarampoore3715 Жыл бұрын
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 👍🏻
@Justanov8 ай бұрын
Which exam? NEET?
@subratabhattasaly30127 ай бұрын
Neet?
@ashely13255 ай бұрын
I’m studying for Neet
@Voerh_mavetali8 ай бұрын
Thumbs up if you are watching this before writing Biology test.
@nstar64122 ай бұрын
😅
@robfreiman88223 жыл бұрын
Thank you Professor Dave! Just the video I needed! As always, very well done!
@markdelaney91433 жыл бұрын
I've learnt alot from dave over the years 👍
@nitin66402 жыл бұрын
*I learnt all the three processes in just one video. Thanks*
@blackbeard95453 жыл бұрын
My first interaction with this topic was a 2nd year university assignment that asked to explain Kranz anatomy.
@kitthecat02742 жыл бұрын
professor dave always comes in clutch the night before an exam. thank you!!
@chrisdavidson68383 жыл бұрын
He knows a lot about the science stuff. 👏🏽
@somyaagarwal627 Жыл бұрын
your video helped me gain 6 free marks in my endsem exams thank you so much.
@ultrapromax59023 жыл бұрын
I am form india and subscribe you. Thanku so much professor Dave
@TheFarmacySeedsNetwork Жыл бұрын
Really well explained my friend! I'll be linking to this video!
@imdadullah86913 жыл бұрын
Unmatchable, great sir dave
@kullaninasir6790 Жыл бұрын
Hello i am from Ethiopia 🇪🇹
@User_f23486 ай бұрын
Me to
@obsanhabtewold-hu3ch13 күн бұрын
Same here, hi
@NyakuruRose7 күн бұрын
Hi am from uganda😅😅
@CalraIsaac2 ай бұрын
This is my first time of listening to you and I Guinea lots from it
@anushkachaturvedi35133 жыл бұрын
Here since 90k!
@sudarshangubbala9265 Жыл бұрын
Love from south India
@ezudinezere60342 жыл бұрын
Tnx Dave one day I will pay your gratitude
@rushil1498 Жыл бұрын
This was amazing. Thank you!
@AshishTeli-t3d Жыл бұрын
Thanks man It's very helpful
@charlesjmouse3 жыл бұрын
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.
@soumithraanand63773 жыл бұрын
DO YOU KNOW that RUBISCO is the most abundant enzyme in world ....awesome right🥳
@sachitsharma1661 Жыл бұрын
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
@omegahaxors9-117 ай бұрын
It hasn't evolved because they take the factorio approach; they just spam more of it to make up for lower efficiency
@pietershiffler40892 жыл бұрын
Thank you Professor Dave, this was very helpful for my upcoming ecology exam!
@ltsfreerealestate4 ай бұрын
Crushed it, Dave.
@AchAzrin3 ай бұрын
That's really cool... Thanks for your effort sir
@hgt90972 жыл бұрын
wow what an explanation brilliant🙃
@aaryajain63963 жыл бұрын
I have my exam on this tomorrow thanks so much Dave!!!!
@THIS---GUY3 жыл бұрын
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
@Coding-Yogi Жыл бұрын
Thanks 💖💖
@republicofprogaming785 Жыл бұрын
2:04 "Burn through carbon previously fixed by the Calvin cycle" what does that mean
@ProfessorDaveExplains Жыл бұрын
Check out my original tutorial on photosynthesis for the general information.
@hanisgowdahani7064Ай бұрын
Hey it means it uses atp previously fixed by the c3 pathway to release co2
@calebmunyaradzikambare33802 жыл бұрын
Dis z excellent. Thank u 💓
@rayyurayyu34122 жыл бұрын
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❤️
@lucasmartin91962 жыл бұрын
Very helpful for my plant fisiology class, thank you :)
@manbiteslife3110 Жыл бұрын
is there hope?? I feel like there is too much information to learn
@発展途上国から日本へ在2 жыл бұрын
No shit guys, he knows alot about the science stuff (unlike those flat earthers out there)
@varunij58243 жыл бұрын
Yo Professor 👏🏻
@baran_ot122 жыл бұрын
Perfect, thank you
@PrabhavBenara11 ай бұрын
awesome explanation
@pragyayadavxls22073 жыл бұрын
Information is Insufficient But explained adequately than my school teacher
@ashely13255 ай бұрын
So mean
@sriwulandari50603 жыл бұрын
Thank you Professor Dave. Nice video !👍
@nca197509752 ай бұрын
Hi! Could you please give the wide list of c3 and c4 plants.
@Letsbecurious293 жыл бұрын
Wonderful explanation
@MultiRedhammer3 жыл бұрын
The resulting 4 carbon compound? How is malate formed in the mesophyll cells from OAA??
@sunergi3 ай бұрын
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.
@Dhikkariyayanissaran3 ай бұрын
Malaye dehydrogenase enzyme
@esha6221 Жыл бұрын
thank you so much 👍
@iramkalsoom64542 жыл бұрын
Thank you professor Dave this is very helpful for my lecturer biology test
@rubengomes38833 жыл бұрын
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
@yakikalasi71123 жыл бұрын
Thank you very much professor Dave😍
@writwits58262 жыл бұрын
Thank you Professor Dave! This is the video I needed to learn this! Now I know this!
@FreemanVashier3 жыл бұрын
For the legal states, you can add Mj as a C3 plant
@jana63592 жыл бұрын
Thanks that's really helpful
@FrostDirt3 жыл бұрын
Thanks Dave, would've helped me last semester.
@allianmariena-ong39023 жыл бұрын
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.?
Do you consider this high school or university level biology?
@ProfessorDaveExplains Жыл бұрын
I think freshman undergrad.
@sharonsibanda75302 жыл бұрын
You are good at explaining sir thank you.
@LadyTink7 ай бұрын
But what about Portucala Oleracea (common purslane) a plant that does factultative cam and c4 photosynthesis :D
@adenho230 Жыл бұрын
Can always count of prof dave. Looking forward to a question on this on my final thanks to you.
@NareshKumar-om2dh Жыл бұрын
thankyou i am in 10th and your video helped me a lot to understand this topic easily
@backstreetfan28873 жыл бұрын
Very nice, thank you for doing this topic
@thaongo79489 ай бұрын
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?
@stbrmilku3 жыл бұрын
nice, clear differentiation! learned lots :)
@geetugupta72442 жыл бұрын
Thankyou so much....
@ev99982 жыл бұрын
Thank you
@adarshbhat94532 жыл бұрын
Thank you sir ,
@IzabellaGonzalez-z2v Жыл бұрын
wow thank you thank you thank you!!!!
@sagarak999 Жыл бұрын
Thank you for the video. So are there any angiosperms that have conversantly evolved to do C4 photosynthesis?
@Murmu943 күн бұрын
From India
@Positive_quotes0012 күн бұрын
Me too
@essahsaeidi55432 жыл бұрын
definitely helped, especially when I slowed the speed down by 25 %.
@鶴岡市リット9 ай бұрын
In CAM plant, when O2 release into environment? If answer night, where is the O2 in the daytime?
@sunergi3 ай бұрын
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2 ай бұрын
@@sunergi Are CAM plant' stomata closed during daytime? Where is O2 leave? Pl. kindly explain.
@ashmiko3 жыл бұрын
Wow 🤩
@ajieacwemik3 жыл бұрын
When you can't understand this thing at school, but you understand this here
@Just_KshitizTiwari3 жыл бұрын
Ah! The another nice one
@dorotheufarias3 жыл бұрын
The other videos are appearing private to me. Is I because they are not released yet?
@ProfessorDaveExplains3 жыл бұрын
Yep they'll all be out soon!
@dorotheufarias3 жыл бұрын
@@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!
@coreyalyn22493 жыл бұрын
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
@아아만취급2 жыл бұрын
머리속이 한번에 정리 되었네요 감사합니다!
@nathanbailey22294 ай бұрын
Searched C3 vs C4 and came here. I wanted corvettes but instead I got science
@nannyondobridget70072 жыл бұрын
I like it thanks
@bramsturk6192 жыл бұрын
Thanks!! really clear!
@iot31363 жыл бұрын
Thank you very much for your video. If they are all angiosperms- why would convergent evolution? Was that only for specific metabolic pathways
@youremom54632 жыл бұрын
Why isn't this in your botany playlist
@ProfessorDaveExplains2 жыл бұрын
it is
@cguy963 жыл бұрын
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?
@zoyapk Жыл бұрын
In c4 plants where does the carbon dioxide comes from ???
@nurefsan2410 ай бұрын
I am asking the same thing but cannot find the answer
@asifbrohi98188 ай бұрын
i think from mitochondria a little amount off carbon dioxide came
@asifbrohi98188 ай бұрын
i think from mitochondria
@frankchen42293 жыл бұрын
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?
@antimatter313 жыл бұрын
" Can a dog come from a protista? " - Kent Hovind 😂
@coldloyalty3 жыл бұрын
Does this count towards anything for his continued education programs?? It definitely should
@鶴岡市リット9 ай бұрын
Where (cell) is chloroplast in cam plants?
@sunergi3 ай бұрын
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
@knowledge_is_virtueАй бұрын
Nice
@alexanderx332 жыл бұрын
Does this mean that CAM plants would die if they were kept under continuous light?
@sunergi3 ай бұрын
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.
@alexanderx333 ай бұрын
@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.
@josephmoleski62443 жыл бұрын
I don't watch you to learn, i watch you to laugh. (that was a compliment i find u funny idk y)
@funnyonly8535 Жыл бұрын
Great
@frncepwd Жыл бұрын
🙌🙌🙌
@Displ4c11 ай бұрын
This will never enter my brain
@marcmarc172 Жыл бұрын
hell yeah
@Motofanable3 жыл бұрын
Aren't all grasses C4?
@jalapenoandbanana3 жыл бұрын
I had no idea
@srikanthpawar84663 ай бұрын
I'm from India 🇮🇳
@haidershaker71033 жыл бұрын
Thank you very much.can you add references to the video.if this is possible?
@dryriverquinnie3 жыл бұрын
plants that use which kind of photosynthesis are best for peeing on?