Photosynthesis: Light Reactions and the Calvin Cycle

Рет қаралды 658,746

Күн бұрын

We get energy by eating other organisms, but plants don't have to do that. They can build their own food out of water, carbon dioxide, and sunlight. I'm sure you've heard of photosynthesis before, but let's take a look at some of the finer points, shall we?
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Пікірлер: 266

@blissfulfragrance2511 6 жыл бұрын

Man this deserves more views. Honestly this is the best video on photosynthesis I've found and I've been searching for 2 hours. This is even better than bozemanscience and khan academy THANK YOU I LOVE YOU

@serene9532 6 жыл бұрын

blissful fragrance ikr

@elleekani 4 жыл бұрын

Legit! He is the only one that can get information through when the rest fail to.

@imtheski5908 4 жыл бұрын

ice cream yeah the bisector

@jordy6636 3 жыл бұрын

100% agree. This was excellent.

@musick4288 2 жыл бұрын

@@jordy6636 Hi! May I ask how is this better than the video made by Bozeman Science? Thank you.

@deedee6460 5 жыл бұрын

Your lectures are a life saver!! Keep ‘em coming!! Thank you!

@heathernabors2190 5 жыл бұрын

Been studying for about six hours now reviewing videos that my professor has provided and was lost...this just cleared it up in about six minutes. Thanks!

@danielgladish2502 4 жыл бұрын

This is an excellent video. Doesn't dumb down any of the concepts while still being clear and concise

@kevinmoore2501 3 жыл бұрын

You’ve always put out great vids, Dave. Keep it up! Liked the vid.

@nickknight5373 6 жыл бұрын

Best summary of the topic I've seen so far on YT.

@user-bg3jj1dz1v 22 күн бұрын

u r good at it pr. Dave. still helping after 7 years

@tymanning8 5 жыл бұрын

These explanations on Cellular respiration and photosynthesis have been lifesavers! Thank you so much

@5minutebiology 2 жыл бұрын

Very comprehensive yet compact and well summarized. The content is precise and amazing. Thanks !

@m101397 5 жыл бұрын

Nice clip, thank you for sharing! After watching this clip, i realized Calvin Cycle, which helps me to understand photosynthesis.

@pinkjohn3884 7 жыл бұрын

how smart is this process, make me think of the guys who sorted all this out. If we guys have a bit of difficulty in understanding all of this I think we should spend a little time giving prase to all the people who discovered all of this,by checking out the history of these discoveriers.

@ProfessorDaveExplains 7 жыл бұрын

right on the money! learning the history of science and knowing how we came to understand everything that we do is extremely important.

@arifzaman409 3 жыл бұрын

Wow! That's totally a mind boggling way to get inspired! Thanks man.

@eliseancell292 2 жыл бұрын

@@ProfessorDaveExplains v bbg BBC cc

@keneanz7194 2 жыл бұрын

What about the one who made all of this? God deserves to be thanked praised and worshipped for the creation of all this complex beings by just a word

@KaitokiNohara Жыл бұрын

I wish ..but it's gonna take extra time

@shejoubson9428 2 ай бұрын

bro THANKS for making it simple

@theaviator1152 3 жыл бұрын

Thanks Professor Dave! Even after two years of high school biology I never knew how plants actually produce oxygen, now I know!!

@annelise610 2 жыл бұрын

No matter how many videos I watch I still don’t get it

@abubakrialliy3350 3 ай бұрын

Sincerely open your mind to it.

@MARK-MAN 2 ай бұрын

Relax.....😌watch it when u feel free

@nanna1202 2 ай бұрын

Have you tried writing and drawing all the different steps? I'm taking biochem for my bachelors in biology and I'm often overwhelmed but drawing it out makes all the difference - hang in there!

@kwizeraboris2287 Ай бұрын

😂😂😂😅

@colinfranks4635 Ай бұрын

I’ve been studying it religiously the last few days and I think I finally have a good idea on it. I watched many different videos and looked through a couple books.

@solar.10 6 жыл бұрын

Thank you so much for teaching us free

@Ridanayab10 5 жыл бұрын

Thank you sir. ..I clear my many of concepts by this video

@Vanessa._7 5 жыл бұрын

excellent explanation! thank you

@easyscienceinternational6039 4 жыл бұрын

Wow..! I have already subscribed for more... nice content Prof. DAVE

@SadhuBiochemist Жыл бұрын

Good job! Clear and concise:)

@sahildharwani3784 7 жыл бұрын

sir you are last minute saver today was my chemistry test and I revised it totally on your videos btw I love the jingle 😇😇

@SriramPatnaik-bv7ob 9 ай бұрын

You probably are already in medschool/have a job; but how is photosynthesis taught in chem?

@Drforeverok 8 ай бұрын

@@SriramPatnaik-bv7ob just through more chemical processes and focusing more on the biochem side of things like structures etc

@nonhlanhlaprincessdlamini3385 5 жыл бұрын

And I did it again,this time it was photosynthesis!!! Thanks a lot Prof

@abdullahashraf3163 3 жыл бұрын

Professor Dave explains so clearly🤩Big Hands sir👍

@mayanksangam4655 4 жыл бұрын

That's fabulous, thanks professor

@marchurtubise4722 5 жыл бұрын

Prof. Dave is a real one

@penguinthegreatest1305 5 жыл бұрын

You're amazingggg, I wish you were my teacher. I LOVE YOU SO MUCH

@Phuktup3 3 ай бұрын

The process isn’t as confusing as it was before (I have watched so many videos) I think I just wasn’t ready. Getting a clearer picture it’s is more amazing than anything else. How incredible it is this process not only exists, but is the reason we all draw breath. The electron getting moved around like that….. Great video!

@Mu3_1 3 ай бұрын

I have an exam on Wednesday in this chapter. Could you plz tell me how can I get past exams papers

@Phuktup3 3 ай бұрын

@@Mu3_1 I am unsure of what the exam will cover, I’m sorry, I cannot help. I understand the process generally and I would need to do my own further studying to help anyone else.

@Mu3_1 3 ай бұрын

@@Phuktup3 it will cover " the photosynthesis" And I'm just looking for notes or last final exams .

@anantrajput2005 4 жыл бұрын

Professor Dave is a good all rounder

@eduardogaldino8432 3 жыл бұрын

Always the relentless genius ... thanks profe...

@jasdeepkaur1901 5 жыл бұрын

thank you professor Dave👍

@SolomeGetnet-xy4dm 9 ай бұрын

Good luck on your tests.

@dadliseyyomqafarafa6843 4 жыл бұрын

Thank you teacher! Keep it up!!!

@ume7739 5 ай бұрын

My teacher's notes make so much more sense now. Thanks really

@Mu3_1 3 ай бұрын

How can I get these notes?

@Gaku-tw3bd 3 жыл бұрын

Allow me to offer me my thanks to you sir professor Dave.You exaplained these complicated steps and made them easy for me!!!😀👍

@Kushneeds_tostudy 3 ай бұрын

thank you professor dave you are the best ❤❤

@kaylaleggett377 Жыл бұрын

This was so good but I’m going to have to watch it at least twice more for it to soak in.

@prabhleenreen3594 5 жыл бұрын

this hella good so clear

@harjotsingh20kviews3daysag4 2 жыл бұрын

Very educational video

@user-vd3qy9se1j 8 ай бұрын

Appreciate you, prof

@achillesczlvideos8424 5 жыл бұрын

Thank you I now understand the lesson Im cramming for an exam

@lexie.ward. 4 жыл бұрын

Omg your jingle sounds like my favorite band, They Might Be Giants.

@saragalea9134 7 ай бұрын

I watched so many of Professors Dave videos but the intro still makes me giggle 😅

@bellaazizi4230 4 жыл бұрын

thankss now i understand clearly abt this

@johntindell9591 4 жыл бұрын

Thank you

@SpencerMagic 2 жыл бұрын

The only videos I watch for bio and chemistry

@keziah.johnson 3 жыл бұрын

Thank you for this concise video! I'm only a week into my biochem 2 class and was already getting lost! This was super helpful to sum up the light and dark rxns!

@JMYaden 4 ай бұрын

Extraordinary that plants harness the most abundant power source in the universe: starlight. It would seem that we could learn much from their internal machinery. Thank you for sharing your knowledge, Professor Dave, and creating these easy-to-use graphics!

@esmeraldagarcia1095 6 жыл бұрын

You sir just made studding way easier.

@patrickthestan 3 жыл бұрын

U listen to pr Dave during sex?

@biochemicalracketeering3018 3 жыл бұрын

I can only read this in a country accent

@lmaobruh4808 3 жыл бұрын

👀💀👀

@dinoclasher4129 2 жыл бұрын

@@patrickthestan who doesn't

@sumbalnaz4742 5 жыл бұрын

♥stay blessed professsor!!!

@wvz. Жыл бұрын

I pray you get the things you pray for, you helped a ton.

@minecraftshiporama211 3 жыл бұрын

You are the best!

@leavalledor3700 3 жыл бұрын

Thank you rold.

@hopeswartz5141 5 жыл бұрын

This is the only video that makes sense thank you!😂

@Mugen_YG 4 жыл бұрын

"Photosystem 2 and Photosystem 1 are backwards because that was the way they were discovered" Some scientists just like to watch the world burn...

@chrissj2513 3 жыл бұрын

kakyion u still learning science eh

@x_x5009 2 жыл бұрын

At least it isn't PS 3 -> PS1 -> PS4 -> PS2

@ta1al 2 жыл бұрын

ah yes, the cause of global warming

@NewWesternFront Жыл бұрын

@@x_x5009 then you just remember it as the "fucked up" process. kinda like remembering purines are bigger than pyrimidines because they are the smaller word. lol.

@aruna2224 4 жыл бұрын

Ur animations very nice sir

@Zetsuke4 4 жыл бұрын

Awesome!

@jinx2873 3 жыл бұрын

thank you

@johndemwell6022 3 жыл бұрын

4:44 - 5:38 you helped me create a 3D model of Calvin Cycle. Thank you.

@NewWesternFront Жыл бұрын

lets see it

@shookhwathen8490 3 жыл бұрын

Thanks, it solves my headache.

@NC-mv1rw 4 жыл бұрын

Great video! I am having a little trouble seeing where the 9 ATP and the 6 NAPDH are coming from

@okukuseku_43 2 жыл бұрын

I watched your video just yesterday and i passed my test today🥰

@futurestanleanspirit5286 3 жыл бұрын

thanks sir it helps for my NEET exam

@pickle2696 Жыл бұрын

this the goat right here

@Eric-sq4hd 4 жыл бұрын

Dominates Mr Anderson on this topic

@drwatsonater1381 2 жыл бұрын

This man makes my real professors look like they don't know what they are doing. Yes, the animation (green screen) aids in his work, but like damn... A well created powerpoint slide would be a solid substitute.

@sunitagavande-vi1ol Жыл бұрын

MOM, I learnt PHOTOSYNTHESIS from Jesus himself !!!

@tabia101 5 жыл бұрын

Lol thanks, my teacher is terrible at teaching...team Dave! 💯💕

@devo6413 3 жыл бұрын

my teacher is terrible at teaching too💕💯

@maryfrancestheresec.estrel1360 2 жыл бұрын

this so helpful to understand. thank you. Grade 9 student.

@aditidhawan7604 6 жыл бұрын

best content on youtube! thanks for helpin us all

@fortunataelias1269 5 жыл бұрын

Good presentation

@fortunataelias1269 5 жыл бұрын

nice ,,content

@beyzee8516 5 жыл бұрын

Reviewing for NMAT for the October 21 exam, not a pre-med course, I'm doomed 😭

@abhinavpotineni2605 Жыл бұрын

i love dave

@nelsonphysics 5 жыл бұрын

Great video! One minor correction: at 2:00 you refer to the ring structure of chlorophyll as porphyrin. It is in fact a chlorin ring, since it only has 20 π electrons and is therefore not fully aromatic like porphyrin (with 22 π electrons).

@williamraleigh7546 7 ай бұрын

Why do you say 20 pi?

@adarshjha1999 6 жыл бұрын

How can an enzyme(RUBISCO) can be utilized in a chemical reaction(PHOTOSYNTHESIS) ??

@ProfessorDaveExplains 6 жыл бұрын

every enzyme has a different mechanism of action! but they are all catalysts. check out my clip on enzymes.

@Kashyapsuhani 4 ай бұрын

Love from India ❣️ Thanks sir 🥰

@kevinmoore2501 5 жыл бұрын

I love these videos. Liked, and subscribed. Relating to photosynthesis, and chloroplasts, are cell walls, or anything specific to a plant cell required for the survival of chloroplasts?

@ProfessorDaveExplains 5 жыл бұрын

all of the features and functions of the cell are necessary to survival, to my knowledge!

@kevinmoore2501 5 жыл бұрын

Alright. I was just thinking that, the chloroplast couldn’t survive if exposed to certain bands of radiation that were filtered out by the cell wall, or if the cytosol absorbed some harmful radiation that would otherwise harm the chloroplast.

@ProfessorDaveExplains 5 жыл бұрын

oh i see what you mean, hmm well obviously high-energy radiation like gamma can be destructive to almost anything but i don't know anything about whether certain frequencies are absorbed by other cellular components. interesting concept!

@kevinmoore2501 5 жыл бұрын

Thanks, Prof. Dave.

@kevinmoore2501 5 жыл бұрын

@@ProfessorDaveExplains One more question, how does EM radiation, and nuclear radiation differ from each other?

@aishani7994 4 жыл бұрын

The light reaction that was explained is the Non-Cyclic Photophosphorylation right? Coz the Cyclic Photophosphorylation is diff...pls let me know asap...

@krin5506 7 ай бұрын

Awesome

@ZarakiJoy 4 жыл бұрын

This is crazy!

@sonice9020 3 жыл бұрын

im smiling thank u sir

@EpicSelenium34 6 жыл бұрын

Professor, in your video you say that 1 electron is excited by the photon. However, 2 electrons from water are used to replenish chlorophyll, and it takes 2 electrons to reduce NADP+ to NADPH, so where does the other electron come from?

@ProfessorDaveExplains 6 жыл бұрын

just one electron per reduction! notice the charge changes by one only. i think it's just the coefficients of the balanced equation that can get confusing.

@suyashmhatre2916 3 жыл бұрын

Thanks a lot you sajed me.😢

@maximilianojosefanegovalen1622 Жыл бұрын

So which ones are the light independent reactions and which ones are the light dependent reactions ?

@imtheski5908 4 жыл бұрын

well the synthesis is intersecting the mithrochondriasynthesis of the photosynthesis thats bisecting the binary code of the honoricificialicalibility

@zubeirubawa7472 5 жыл бұрын

U are d best

@juddgreenhill1154 9 ай бұрын

ILY

@kincypreslaquindanum5479 3 жыл бұрын

what is the substages of light dependent and independent reaction?

@surgoesoliman9966 4 жыл бұрын

This man is the Cr1tikal of biology

@bbbros8826 2 жыл бұрын

My school biology teacher send this video link and told us to watch it and explain to her. 👀👀👀

@hirafatima3453 Жыл бұрын

Sir hum phosynthsis ko define karty huy kahty hain k it produce glucose but at the end of calvin cycle G3 P formed then where and how Glucose formed..

@user-pv7po3fg4j 6 ай бұрын

question. If one CO2 gives off two 3PGA, and each 3PGA makes one G3P, and out of every 6 G3P only one goes towards glucose production, that means 3 CO2s only produced 1 net G3P, right? So my question is, wouldnt that mean we need 18 CO2 to produce one glucose? Why do all textbooks say we only need 6?

@KamranAli-nd7ve 2 жыл бұрын

Professor dave we want you to make vadio on how you memoize a lot of things Quick ..

@meeramalik7860 3 жыл бұрын

studying for finals over winter break check :P

@PumpUPdaBase 7 жыл бұрын

Hello sir are you going to cover myo and hemp globins?

@ProfessorDaveExplains 7 жыл бұрын

not on this round but i will put it on the list! i talk about hemoglobin a little bit during DNA damage/repair for the sickle cell part.

@SunSunSunn 6 жыл бұрын

I finally understand why people need to use body language to not appear uninterested while they're talking.

@sargunsingh8585 3 жыл бұрын

Very helpful!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

@Malik-em6ng 2 жыл бұрын

wait didn´t you skip fase 3 in the last part ?

@GurpreetSingh-jr8kk 7 жыл бұрын

Proffesor plzz upload a video on the chapter refraction of light plzz

@aqsajamali9712 7 жыл бұрын

Gurpreet Simngh Nigam

@lawrence2823 3 жыл бұрын

thank you professor Jesus, for designing photosynthesis so we humans can be alive

@muhammadhasan1253 3 жыл бұрын

electrons hop between chlorophylls by resonance transfer, they don't emit their own photons.

@6206ada 3 жыл бұрын

Just about to comment this!! I really wanna know how resonance transfer works

@muhammadhasan1253 3 жыл бұрын

@@6206ada simply put, excited electrons transfer energy to electrons on nearby chlorophylls making them move to an excited state and then the process continues. Resonance energy transfer works due to close proximity provided by multiple proteins making up Photosystems.

@6206ada 3 жыл бұрын

@@muhammadhasan1253 true! I am a 3rd year biology major and I keep asking my prof questions and the answer is always “that’s a graduate level question, but here’s the simple version” gimme the complex version lol I wanna know EXACTLY HOW 😅💚

@muhammadhasan1253 3 жыл бұрын

@@6206ada for that u would hav to do sm reading. Any Biochem textbook chapter on photosynthesis explains this in detail, read end of chapter cited articles for in depth understanding.

@hjuryfhukhjugdstjj8329 Жыл бұрын

HOW ARE THE LIGHT REACTIONS CONNECTED TO CALVIN CYCLE? DID I MISS IT?

@waleedtariq6234 3 жыл бұрын

This guy even not mentioned the enzyme working in this process and also does not mention the side redox reactions,i think it only for students who have already a tight grasp on this topic.also not mentioned how G3P converts back to Ribulose 5 phosphate.