Chapter 8.2 - Transport of O2 and CO2 (Bohr Effect) | Cambridge A-Level 9700 Biology
Вставка
- Опубліковано 22 вер 2021
- Based on the NEW! 2022-2024 syllabus
Cambridge Assessment International Education
9700 AS Biology
Full Chapter 8 playlist:
• Chapter 8 - Transport ... Cambridge A-Level Biology notes, worksheets, topical past papers, videos without ads, and other resources can be now be purchased by chapter on www.genesisorigo.com/cambridg...
AS and A2 Biology Notes Bundles are also available!
Sign up for FREE resources / free trials :D
What will you be getting per chapter?
- Comprehensively written notes by Miss Beh
- Based on the NEW! 2022-2024 Cambridge A-Level 9700 Biology syllabus
- Derived from analysing 12 years of past year papers (2010-2022)
- Highlighted with important keywords in RED and BOLD
- Structured according to the chapter outline listed in the beginning
- Accompanied by lecture videos without ADs
- 100 MCQs and answers for AS Biology chapters
- Topical past papers available from 2015-2020 for each chapter
- Worksheet with selected past year structured questions, to practice frequently-examined questions, a broad variety of questions, and reduce repetitive questions .
P/S: We're still working very hard to build the site! Chapters will be released in stages. Stay tuned :)
How to Enrol? www.genesisorigo.com/a-level-...
----
Contact / follow me on:
Email - behlogy@gmail.com
UA-cam - / @behlogy
Instagram - / behlogy
TikTok - / behlogy
This is one of the best physiology mechanism explanation content here on UA-cam. thanks for the simplified explanation. I got it right away
finally understood this! no matter where i learnt it it never got to my head. my a levels are in 3 days pfft
THANK YOU SO MUCHHHH
I HAVE NOT ENCOUNTERED A SINGLE RESOURCE THAT IS AS THOROUGH AS YOUR VIDEOSSS
LITERALLY SAVING MY LIFE
Just about to sit the structured questions here in NZ. Thanks for all the help. This is the only channel I watch for Bio!!!!
The best video on transport of gases in blood on youtube thanks
THANKYOU FOR BEING SO thorough w this i was abt to hv a mental breakdown:')
Thanks so much this video helped me to understand Bohr effect better, which was one of the most difficult topic that is challenging me thanks so much I appreaciate your effort, keep going, this is only and best channel I watch for Biology😁❤
It is a difficult topic for many! Glad it helped! 😊
thank u sm!! actual life saver
Thank you so so so much for this wonderful explanation it cleared all of my misunderstandings
ur so good, thanks
love your videos! will you be doing some revision videos for A2?
Yay thanks! Not at the moment as my current students are still in AS level... Feel free to browse through the complete collection of A2 videos tho :D Hope it helps.
I love you. Thank you.
Hi miss. I’m a little confused about the chloride shift. The Cl- ions move in to balance out the H+ right? So when H+ binds with Hb, wouldn’t that make the net charge of the rbc negative?
It's a continuous process so chloride ions won't run out of H+ to bind with... And in the case where there is none... Chloride ions can diffuse back out xD
@@behlogy ah okay that makes a lotta sense. Thank you miss ☺️
is chloride shift included in the syllabus?
Yes it is new and included!
If u can bit slow down it will be better because in this video ur to fast ‼️
ah yes! sorry some videos like this one tend to be a little speedy. please make sure you do some past years related to this question to put these knowledge into practice and see if you understand... will take note for future videos!
mate i be doing these at 1.5 speed, So far I understand, though i am doing A levels at age 20 -_-
i had this in x2 lol
really struggling to understand the content of this video. You're going too fast :(
the further I go through this video the urge to cry and have a mental break down grows stronger. This topic is so complicated
@@stressedoutkid2415 try reading SME notes, the textbook and watch the video twice. it really helped me understand hopefully it helps you too
omg the mean level of stress for this chapter is very real
im sorry i dont have time to re-record a version now...but here are a few pointers that may help:
1. Always start with defining the pO2 and pCO2 at the location
i.e. lungs - high pO2, low pCO2
respiring tissue - low pO2, high pCO2
2. Look at the relevant part of the graph that matches the high/low pO2 and pCO2 (shown in video)
- Hb is not only good, but very good at releasing O2 and picking up CO2 at respiring tissue
- that's why when pCO2 is high, the O2 dissociation curve shifts to left
3. Think of the reasons why
- Hint: it's bcs of the way CO2 is transported!
- The product of the process (equation in video) is H+ ion. Hb has a high affinity to H+ and binds to it, forming HHb, releasing O2
- Hb can also directly bind with CO2 and form carbaminohaemoglobin, so O2 is released
In past papers, there is usually a mark for stating the pO2 and pCO2 level, and the rest of the marks is for how CO2 is transported. last mark point goes to stating that all this together explains the Bohr effect :) Hope this helps.
IKR. I struggled understanding this concept.But trying watching the videos I link them below for better understanding and then watch this video. U could understand better Ig :)
ua-cam.com/video/r-16hB76Ark/v-deo.html
ua-cam.com/video/gEdt7ykNzAw/v-deo.html
Studying your class notes and then watching these videos help, more than just straight up watching lectures online.
at 15:09 won't the Cl ion balance out the positive charge instead of the negative charge? Since the RBC at this point if positively charged
It wouldn't bcs they dont exist in the exact same quantities!
can u explain why the at respiring tissues we have less partial pressure of oxygen? i think that respiring tissues have more demand for oxygen so they must have high partial pressure right?
time 2:15
They use oxygen, so there's less oxygen left