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Updated Apr 21, 2026
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Funkcije organelov v celici
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Uvod v celične organele
Predstavljaj si celico kot dobro organizirano mesto. Vsak organel je kot posebna zgradba z lastno nalogo - nekje se proizvaja energija, drugje hrana, tretje mesto pa skrbi za transport.
Evkariontske celice (naše celice in celice rastlin) imajo pravo jedro in organele z membranami. To jih naredi veliko bolj organizirane od prokariontskih celic (bakterij), kjer vse prosto plava v citoplazmi.
Citoplazma je kot "mestni prostor" - vsa vsebina celice, kjer se organeli nahajajo in delujejo skupaj. Brez te sodelovanja celica ne bi mogla preživeti.
💡 Pomni: Organeli so kot "mali organi" v celici - vsak ima svojo specifično funkcijo!
Mitohondrij - celična elektrarna
Mitohondrij je tvoj glavni vir energije! Ta organel proizvaja ATP - molekule, ki so kot "baterije" za vse celične procese.
V mitohondrijih poteka celično dihanje. Ta proces razgradi glukozo s pomočjo kisika in sprosti energijo. Enostavna formula: Glukoza + O₂ → CO₂ + H₂O + ATP. Tako dobiš energijo za vse - od premikanja mišic do razmišljanja!
Mitohondrij ima dve membrani, notranja pa je nagubana v kriste. Več gub = večja površina = več energije. Logično, ne? V mišičnih celicah jih je zato ogromno.
⚡ Zanimivost: Brez mitohondrijev ne bi mogel dvigniti niti prsta - vse potrebuje energijo iz ATP!
Kloroplast - tovarna hrane (samo rastline!)
Kloroplasti so organeli, ki jih imajo samo rastline in alge. V njih poteka fotosinteza - čudovit proces, ki pretvarja sončno svetlobo v hrano.
Osnovna formula fotosinteze: CO₂ + H₂O + svetloba → Glukoza + O₂. Klorofil (zeleno barvilo) ujame svetlobo in jo uporabi za izdelavo glukoze. Zato so rastline zelene!
Kloroplasti imajo tilakoide, zložene v grane (kot kupčki kovancev). Tu se dogaja čarovnija fotosinteze. Rastline izvajajo tako fotosintezo (za hrano) kot celično dihanje (za energijo).
🌱 Pomembno: Fotosinteza in celično dihanje sta nasprotna procesa - produkti enega so reaktanti drugega!
Ribosomi in endoplazmatski retikulum
Ribosomi so kot tovarne beljakovin. Berejo navodila iz jedra in sestavljajo aminokisline v beljakovine. So majhni in nimajo membrane.
Grob endoplazmatski retikulum (gER) ima na sebi ribosome. Tu se obdelajo beljakovine, ki bodo izvožene iz celice ali vgrajene v membrane.
Gladki endoplazmatski retikulum (jER) nima ribosomov. Njegova naloga je sinteza maščob, razstrupljanje in shranjevanje kalcija. V jetrnih celicah te reši strupov!
🔧 Povezava: Vsi organeli sodelujejo - jedro pošlje navodila, ribosomi izdelajo beljakovino, ER jo obdela, vse pa poganja energija iz mitohondrijev!
Primerjava in ključni povzetek
Mitohondrij vs. Kloroplast - ne zamešaj! Mitohondrij (celično dihanje, ATP, ves čas) najdeš povsod. Kloroplast (fotosinteza, glukoza, potrebuje svetlobo) samo pri rastlinah.
Rastlinske celice imajo OBA - kloroplaste za hrano in mitohondrije za energijo. Živalske celice imajo samo mitohondrije.
Hiter pregled za test: Mitohondrij = elektrarna (ATP), Kloroplast = tovarna hrane (samo rastline), Ribosomi = tovarna beljakovin, gER = obdelava beljakovin, jER = maščobe in razstrupljanje.
🎯 Za uspeh: Vedno poveži zgradbo z funkcijo - nagubana membrana mitohondrija omogoča več energije!
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Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
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This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
Funkcije organelov v celici
Vsaka celica v tvojem telesu je kot majhno mesto z različnimi "tovarnami" in "zgradbami" - to so organeli. Razumevanje njihovih funkcij ti pomaga razumeti, kako deluje življenje samo!
Uvod v celične organele
Predstavljaj si celico kot dobro organizirano mesto. Vsak organel je kot posebna zgradba z lastno nalogo - nekje se proizvaja energija, drugje hrana, tretje mesto pa skrbi za transport.
Evkariontske celice (naše celice in celice rastlin) imajo pravo jedro in organele z membranami. To jih naredi veliko bolj organizirane od prokariontskih celic (bakterij), kjer vse prosto plava v citoplazmi.
Citoplazma je kot "mestni prostor" - vsa vsebina celice, kjer se organeli nahajajo in delujejo skupaj. Brez te sodelovanja celica ne bi mogla preživeti.
💡 Pomni: Organeli so kot "mali organi" v celici - vsak ima svojo specifično funkcijo!
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Mitohondrij - celična elektrarna
Mitohondrij je tvoj glavni vir energije! Ta organel proizvaja ATP - molekule, ki so kot "baterije" za vse celične procese.
V mitohondrijih poteka celično dihanje. Ta proces razgradi glukozo s pomočjo kisika in sprosti energijo. Enostavna formula: Glukoza + O₂ → CO₂ + H₂O + ATP. Tako dobiš energijo za vse - od premikanja mišic do razmišljanja!
Mitohondrij ima dve membrani, notranja pa je nagubana v kriste. Več gub = večja površina = več energije. Logično, ne? V mišičnih celicah jih je zato ogromno.
⚡ Zanimivost: Brez mitohondrijev ne bi mogel dvigniti niti prsta - vse potrebuje energijo iz ATP!
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Kloroplast - tovarna hrane (samo rastline!)
Kloroplasti so organeli, ki jih imajo samo rastline in alge. V njih poteka fotosinteza - čudovit proces, ki pretvarja sončno svetlobo v hrano.
Osnovna formula fotosinteze: CO₂ + H₂O + svetloba → Glukoza + O₂. Klorofil (zeleno barvilo) ujame svetlobo in jo uporabi za izdelavo glukoze. Zato so rastline zelene!
Kloroplasti imajo tilakoide, zložene v grane (kot kupčki kovancev). Tu se dogaja čarovnija fotosinteze. Rastline izvajajo tako fotosintezo (za hrano) kot celično dihanje (za energijo).
🌱 Pomembno: Fotosinteza in celično dihanje sta nasprotna procesa - produkti enega so reaktanti drugega!
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Ribosomi in endoplazmatski retikulum
Ribosomi so kot tovarne beljakovin. Berejo navodila iz jedra in sestavljajo aminokisline v beljakovine. So majhni in nimajo membrane.
Grob endoplazmatski retikulum (gER) ima na sebi ribosome. Tu se obdelajo beljakovine, ki bodo izvožene iz celice ali vgrajene v membrane.
Gladki endoplazmatski retikulum (jER) nima ribosomov. Njegova naloga je sinteza maščob, razstrupljanje in shranjevanje kalcija. V jetrnih celicah te reši strupov!
🔧 Povezava: Vsi organeli sodelujejo - jedro pošlje navodila, ribosomi izdelajo beljakovino, ER jo obdela, vse pa poganja energija iz mitohondrijev!
Sign up to see the contentIt's free!
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Primerjava in ključni povzetek
Mitohondrij vs. Kloroplast - ne zamešaj! Mitohondrij (celično dihanje, ATP, ves čas) najdeš povsod. Kloroplast (fotosinteza, glukoza, potrebuje svetlobo) samo pri rastlinah.
Rastlinske celice imajo OBA - kloroplaste za hrano in mitohondrije za energijo. Živalske celice imajo samo mitohondrije.
Hiter pregled za test: Mitohondrij = elektrarna (ATP), Kloroplast = tovarna hrane (samo rastline), Ribosomi = tovarna beljakovin, gER = obdelava beljakovin, jER = maščobe in razstrupljanje.
🎯 Za uspeh: Vedno poveži zgradbo z funkcijo - nagubana membrana mitohondrija omogoča več energije!
We thought you’d never ask...
What is the Knowunity AI companion?
Our AI Companion is a student-focused AI tool that offers more than just answers. Built on millions of Knowunity resources, it provides relevant information, personalised study plans, quizzes, and content directly in the chat, adapting to your individual learning journey.
Where can I download the Knowunity app?
You can download the app from Google Play Store and Apple App Store.
Is Knowunity really free of charge?
That's right! Enjoy free access to study content, connect with fellow students, and get instant help – all at your fingertips.
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The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user
The app is very easy to use and well designed. I have found everything I was looking for so far and have been able to learn a lot from the presentations! I will definitely use the app for a class assignment! And of course it also helps a lot as an inspiration.
Stefan S
iOS user
This app is really great. There are so many study notes and help [...]. My problem subject is French, for example, and the app has so many options for help. Thanks to this app, I have improved my French. I would recommend it to anyone.
Samantha Klich
Android user
Wow, I am really amazed. I just tried the app because I've seen it advertised many times and was absolutely stunned. This app is THE HELP you want for school and above all, it offers so many things, such as workouts and fact sheets, which have been VERY helpful to me personally.
Anna
iOS user
Best app on earth! no words because it’s too good
Thomas R
iOS user
Just amazing. Let's me revise 10x better, this app is a quick 10/10. I highly recommend it to anyone. I can watch and search for notes. I can save them in the subject folder. I can revise it any time when I come back. If you haven't tried this app, you're really missing out.
Basil
Android user
This app has made me feel so much more confident in my exam prep, not only through boosting my own self confidence through the features that allow you to connect with others and feel less alone, but also through the way the app itself is centred around making you feel better. It is easy to navigate, fun to use, and helpful to anyone struggling in absolutely any way.
David K
iOS user
The app's just great! All I have to do is enter the topic in the search bar and I get the response real fast. I don't have to watch 10 YouTube videos to understand something, so I'm saving my time. Highly recommended!
Sudenaz Ocak
Android user
In school I was really bad at maths but thanks to the app, I am doing better now. I am so grateful that you made the app.
Greenlight Bonnie
Android user
very reliable app to help and grow your ideas of Maths, English and other related topics in your works. please use this app if your struggling in areas, this app is key for that. wish I'd of done a review before. and it's also free so don't worry about that.
Rohan U
Android user
I know a lot of apps use fake accounts to boost their reviews but this app deserves it all. Originally I was getting 4 in my English exams and this time I got a grade 7. I didn’t even know about this app three days until the exam and it has helped A LOT. Please actually trust me and use it as I’m sure you too will see developments.
Xander S
iOS user
THE QUIZES AND FLASHCARDS ARE SO USEFUL AND I LOVE Knowunity AI. IT ALSO IS LITREALLY LIKE CHATGPT BUT SMARTER!! HELPED ME WITH MY MASCARA PROBLEMS TOO!! AS WELL AS MY REAL SUBJECTS ! DUHHH 😍😁😲🤑💗✨🎀😮
Elisha
iOS user
This apps acc the goat. I find revision so boring but this app makes it so easy to organize it all and then you can ask the freeeee ai to test yourself so good and you can easily upload your own stuff. highly recommend as someone taking mocks now
Paul T
iOS user