Come back to comment you predictions are spot on. Gene mutations and why they are not harmless came up and if it wasn’t for this video I wouldn’t have done that question with ease
This was so so so accurate today!!! There was a 3 mark question on fish farming, 4 mark question on sampling, a 5 mark question on industrial fermenters, 6 mark question on human impact on biodiversity... And many more.... You are amazing sir!!!!!!
Was testing myself with others before the exam from these predictions for paper 2, and they asked if I already had the paper when we walked out they were that accurate!
@M43K if ur only reading the textbook u cant expect to know the answer to questions that come on the exam, you still need to know the content in depth as it forms the basis for your responses but you need to know how to apply it. 1)Do all past papers avaliable so you know what the examiners are looking for 2) Do all the topic questions on physics and maths tutor for each topic on advanced info 3) if you're struggling to remember content watch the mindmaps on this channel as it helped me understand the content a lot, as well as the summarised notes from the textbook on savemyexams 4) test yourself with quizlet flashcards or physics and maths tutor flashcard
Thank you so much!! 🙃You're the only teacher on YT i could find who does OCR bio! Can i ask though, how long do you think each one should take/how much time should you spend per question?
Well that’s a lot of questions. Do the ones that scare you, not the ones you think are easy. 5-10 minutes to plan, 10 to write under timed conditions. Get a friend to give you feedback
i found your videos on friday and your mindmaps are really helpful, doing a transport in plants mindmap but took a break to type this. have you done an AS biology mindmap on classification and evolution? i dont know whether i missed it or you just havent had time/gotten round to it yet. thank you :D
For population and sustainability with the specific examples you need to learn for example maasai mara, how much would you recommend is needed to be learned? The textbook contains a lot of information, so which parts would you say to be aware of for each? Thank you
That’s a really good question and difficult to answer. The spec says this: To include how ecosystems can be managed to balance the conflict between conservation/ preservation and human needs e.g. the Masai Mara region in Kenya and the Terai region of Nepal, peat bogs I interpret this to mean that you don’t need to learn it like a case study (eg numbers of tourists etc) but you should be able to talk about general principles in balancing human and conservation needs. It certainly wouldn’t hurt to know in detail though
thankyou sm this really helped me in my revision and questions to look out for. Can you also share what past papers are the most beneficial to go through :)
I’d do my “predicted paper ones” and then mark using the videos. The papers are linked in the video description. Try them first, then do the Runthrough
Thank you for this! Really helpful :) just wondering for Question 24 would a glycolipid count as a lipid too and not just cholesterol and phospholipid?
Thanks for the video! I have a question about one of the 6 markers, number 21. How would 'start' the serial dilution? It's difficult for me to explain but if I started with a nutrient broth, I know that the starting concentration is 1% for example. In a bottle of yakult I don't know this, so how would I know the concentration of the following dilutions? I hope this made sense.
Hi, I use the same OCR textbook as you’ve used in the video for the sections per topic, and I was wondering what your opinion was on the textbook questions ? I haven’t gone through many questions for the topics and was wondering whether you think it’s worth doing more of those textbooks questions or doing past paper questions instead ? Thank you :)
I think the revision and summary questions at the end of each topic are a good place to start. Then look at maths and physics tutor or save my exams for topic questions
In question 12, does transpiration count as the third pathway, because I only ever learnt about the symplast and apoplast pathways for water entering the xylem. I've described osmosis from the soil to the roots, then symplast and apoplast, then transpiration and then the cohesive and adhesive nature of water - is that all I would need? Also, thank you so much for all your videos, they've been so helpful for consolidating information and then doing practice.
The third route is less commonly mentioned but is the vacuolar pathway. Water moves into the cell and into the vacuole then into the next cell and vacuole etc…
Hi - these are probably the least beneficial I’m afraid. They won’t ask the same question 2 years in a row. Also we have the advanced information to work with now so you should focus on questions from those topics
I've been doing past paper questions and noticed there are slight differences between the mark schemes in the old unit papers and the new spec. Is it still alright if I do old spec questions or do you think it's a waste of time? Also thanks for these videos!
Yeah they’re a good idea to do especially as some topics have never really come up in the new spec. Just try and be aware what the newer mark schemes would be like for the old questions (eg no QWC marks for 3/4 markers and more precise use of keywords etc)
its so tough to say. i think the paper itself will be much the same but there are factors that could move the grade boundaries up or down. its a bit of a mystery. all you can do is try to be better prepared than everyone else!
Definitely a fair question! Yes I have but of course some predictions will come up and some won’t. This year we have the added information of what modules are being tested so this should make it easier to predict. In reality you should definitely NOT just revise the predictions but the whole modules tested. It’s just that you should be really really clear on the predictions and be able to explain these areas in substantial detail
how do baroreceptors work, Isn't the high blood pressure due to the heart pumping more, so how could there be an increase in blood pressure before the signaling of the heart to increase cardiac output?
Baroreceptors in the carotid arteries might detect a fall in blood pressure (if you stand up quickly and blood is not reaching your head) and cause the heart rate to increase. They are more about responding to drops in bp
+ more fish, less impact on wild fish numbers, sustainable, can choose which species to minimise impact/maximise yield, no risk of by-catch - csn cause pollution of water (fish poo), csn be parasites that thrive in high population density environments, these csn then transfer to wild populations
This was a little bit of a weird one. Basically can you explain a predator prey cycle and the increases / decreases at different points but then can you also compare the methods of hunters (who collected the original data on population cycles in Canada with lynx/hares) to those of ecologists today
It’s possible - but they would have to give you some information about keratin/elastin as they wouldn’t expect you to memorise details of their structure (but you would then compare with haemoglobin structure which you do need to know about)
Here are 5 reasons… 1. Spans scales from DNA (10nm) to ecosystems (1,000 km) 2. So many variables it’s hard to control in experiments 3. Maths and statistics all the way through to essays 4. A lot of educated guessing 5. Studies the most complicated thing in the known universe = human body
yes its just about possible but start now! i mean immediately. spend 2/3 weeks doing as much content revision as possible then you should shift focus and be doing practice exam questions (so if you want to use stuff on my channel i'd say first step do all the mindmaps on the topics coming up, then you can do practice tests and runthroughs and then stuff on maths and physics tutor for example). good luck!
please do these predicted papers for this 2022-2023 a level, you would be a saviour for us students.
Your muscle aerobic to anaerobic and adrenal glands predictions were correct
your predictions are literally all I have been revising and they have actually been really accurate and life saving so thank you for your hardwork !!!
Come back to comment you predictions are spot on. Gene mutations and why they are not harmless came up and if it wasn’t for this video I wouldn’t have done that question with ease
Sir u genius, predictions were the most accurate I've seen from any teacher!!!
@M43K he predicted muscles and how it’s linked to respiration, chloroplast structure and adrenal glands 🤷♀️
This was so so so accurate today!!! There was a 3 mark question on fish farming, 4 mark question on sampling, a 5 mark question on industrial fermenters, 6 mark question on human impact on biodiversity... And many more.... You are amazing sir!!!!!!
do you do OCR?
@@myli5554 yes they do by the look of them questions
@@am12300 i dont remeber a 5 marker on human impacts on biodiverosty lol
@@myli5554 neither do I tbh
Your my saviour, If I become a billionaire just know your getting a small loan of a million dollars
What a good lad thank you
thanks for this great resource
Mr murray pls know I’ll literally salute u if i see u in public. 😭❤️
the 6 marker on ATP/ respiration and muscle contractions during excercies came up so glad I got to cover it here
@M43K the first box 😭
@M43K 16:10
Was testing myself with others before the exam from these predictions for paper 2, and they asked if I already had the paper when we walked out they were that accurate!
Your predictions were most questions on the paper 1, thankyou
This was so accurate wow
Mr Murray you little dancer
thank you thank you thank you thank you
Hi, could you please do a video on the practicals that might come up in the paper?
absolute legend most of your predictions were very helpful
@M43K if ur only reading the textbook u cant expect to know the answer to questions that come on the exam, you still need to know the content in depth as it forms the basis for your responses but you need to know how to apply it.
1)Do all past papers avaliable so you know what the examiners are looking for
2) Do all the topic questions on physics and maths tutor for each topic on advanced info
3) if you're struggling to remember content watch the mindmaps on this channel as it helped me understand the content a lot, as well as the summarised notes from the textbook on savemyexams
4) test yourself with quizlet flashcards or physics and maths tutor flashcard
@M43K yeah well it's just unlucky that happened maybe it will lower gbs
@M43K literally all of it was on the advance information? Apart from the water 6 marker
Thank you so much!! 🙃You're the only teacher on YT i could find who does OCR bio! Can i ask though, how long do you think each one should take/how much time should you spend per question?
Well that’s a lot of questions. Do the ones that scare you, not the ones you think are easy. 5-10 minutes to plan, 10 to write under timed conditions. Get a friend to give you feedback
i found your videos on friday and your mindmaps are really helpful, doing a transport in plants mindmap but took a break to type this. have you done an AS biology mindmap on classification and evolution? i dont know whether i missed it or you just havent had time/gotten round to it yet. thank you :D
Not yet I’m afraid - will get round to it later on this term. Not assessed this year if you’re a y13 student
Thank you so much
No way he actually predicted it so accurately!!
UGH when I saw that 6 marker of aerobic respiration and ATP I internally screamed with joy because I watched this video
it was mostly anaerobic tho
@@archiesutherland6127 yeah the one about like doing excessive exercise or something
@@melodysdiary. yh. I just outlined anaerobic, aerobic and creatine phosphate. I probably should of mentioned more about coenymes tho for aerobic
Really appreciate your hard work. If you dont mind, could you do a population and sustainability video before out exams?
I’ll try!
Hi just wondering if you can do a similar thing for as level ocr biology
For population and sustainability with the specific examples you need to learn for example maasai mara, how much would you recommend is needed to be learned? The textbook contains a lot of information, so which parts would you say to be aware of for each? Thank you
That’s a really good question and difficult to answer. The spec says this: To include how ecosystems can be managed
to balance the conflict between conservation/ preservation and human needs e.g. the Masai Mara region in Kenya and the Terai region of Nepal, peat bogs
I interpret this to mean that you don’t need to learn it like a case study (eg numbers of tourists etc) but you should be able to talk about general principles in balancing human and conservation needs. It certainly wouldn’t hurt to know in detail though
@@MrMurrayBiology this topic just reminds me a lot about geography 😂
thankyou sm this really helped me in my revision and questions to look out for. Can you also share what past papers are the most beneficial to go through :)
I’d do my “predicted paper ones” and then mark using the videos. The papers are linked in the video description. Try them first, then do the Runthrough
Thank you for this! Really helpful :) just wondering for Question 24 would a glycolipid count as a lipid too and not just cholesterol and phospholipid?
Yes - good point!
please predict 2023 a level biology!!!
@Mr Murray can u please release a unified paper mock 2 similar to others. Thank you for all you have done so far.
Coming soon!
@@MrMurrayBiology thank you!
would you be doing this for this years ocr a level exams?
would really appreciate it!
Thanks for the video! I have a question about one of the 6 markers, number 21. How would 'start' the serial dilution? It's difficult for me to explain but if I started with a nutrient broth, I know that the starting concentration is 1% for example. In a bottle of yakult I don't know this, so how would I know the concentration of the following dilutions? I hope this made sense.
The yakult is the unknown concentration you are trying to find out. It’s 100% yakult. The next dilution would be 10% yakult and so on….
@@MrMurrayBiology Thank you so much! I genuinely watch the ads all the way through on your videos so you get more money 🤣
Hi,
I use the same OCR textbook as you’ve used in the video for the sections per topic, and I was wondering what your opinion was on the textbook questions ? I haven’t gone through many questions for the topics and was wondering whether you think it’s worth doing more of those textbooks questions or doing past paper questions instead ? Thank you :)
I think the revision and summary questions at the end of each topic are a good place to start. Then look at maths and physics tutor or save my exams for topic questions
@@MrMurrayBiology awesome ! thank you for the fast reply !
my fate is in your hands now Mr Murray
In question 12, does transpiration count as the third pathway, because I only ever learnt about the symplast and apoplast pathways for water entering the xylem. I've described osmosis from the soil to the roots, then symplast and apoplast, then transpiration and then the cohesive and adhesive nature of water - is that all I would need? Also, thank you so much for all your videos, they've been so helpful for consolidating information and then doing practice.
The third route is less commonly mentioned but is the vacuolar pathway. Water moves into the cell and into the vacuole then into the next cell and vacuole etc…
@@MrMurrayBiology Thank you!
Hi could you please go through the 2021 paper 1,2 and 3. As they will be most beneficial papers to go through because they are the latest ones. Thanks
Hi - these are probably the least beneficial I’m afraid. They won’t ask the same question 2 years in a row. Also we have the advanced information to work with now so you should focus on questions from those topics
how can we access ur google drive?
I've been doing past paper questions and noticed there are slight differences between the mark schemes in the old unit papers and the new spec. Is it still alright if I do old spec questions or do you think it's a waste of time? Also thanks for these videos!
hey I have done most old spec papers and i have to say they are game changing highly recommend
@@shambhavimohare1106 Oh that's good to hear!!
Yeah they’re a good idea to do especially as some topics have never really come up in the new spec. Just try and be aware what the newer mark schemes would be like for the old questions (eg no QWC marks for 3/4 markers and more precise use of keywords etc)
Hi! Is there no way you can provide the answers for the questions? I think they would be pretty useful examplar answers
I doubt it.. hes a working teacher and all of this help he is providing us students for FREE is more than enough to be grateful for
Hiya sir, thanks for this video, just had 1 question. Do you think that the 2022 ocr bio exam will be an easier paper due to Covid disruption. Thanks
its so tough to say. i think the paper itself will be much the same but there are factors that could move the grade boundaries up or down. its a bit of a mystery. all you can do is try to be better prepared than everyone else!
please come back 🙏🏾
Hi just a genuine question, have you predicted a-levels correctly in the past ever?
Definitely a fair question! Yes I have but of course some predictions will come up and some won’t. This year we have the added information of what modules are being tested so this should make it easier to predict. In reality you should definitely NOT just revise the predictions but the whole modules tested. It’s just that you should be really really clear on the predictions and be able to explain these areas in substantial detail
hello sir ,could you predict for this years OCR a-level biology?
how do baroreceptors work, Isn't the high blood pressure due to the heart pumping more, so how could there be an increase in blood pressure before the signaling of the heart to increase cardiac output?
Baroreceptors in the carotid arteries might detect a fall in blood pressure (if you stand up quickly and blood is not reaching your head) and cause the heart rate to increase. They are more about responding to drops in bp
Could you look at AQA?
There are other channels such as Miss estruch to focus on AQA
Have u done a video on cellular control?
6.1 - yep
Hi, is this specification for OCR GCSE or for A level biology, as I need GCSE and this one seems different to what I have.
A level! Sorry not doing a gcse one
Hi, how do you ensure aseptic conditions in fermentors?
Fill it with steam before you add any nutrients / microbes (batch culture). Or air filters as well if it’s continuous
Also at the end of the video you mention that the powerpoint will be linked below? Would you mind sending the link please? Thank you so much
there now
10:00
Hi is there any way you can share your document presentation ? Its very useful
check the description
For fishing, what are the advantages and disadvantages of fish farming? Thanks!
+ more fish, less impact on wild fish numbers, sustainable, can choose which species to minimise impact/maximise yield, no risk of by-catch
- csn cause pollution of water (fish poo), csn be parasites that thrive in high population density environments, these csn then transfer to wild populations
ua-cam.com/video/K2Hlxu6VGWQ/v-deo.html is a good intro
Hi Sir,
Hope you are doing well!
Just quite unsure on how to answer question 26?
This was a little bit of a weird one. Basically can you explain a predator prey cycle and the increases / decreases at different points but then can you also compare the methods of hunters (who collected the original data on population cycles in Canada with lynx/hares) to those of ecologists today
@@MrMurrayBiology thanks a lot really appreciate your help !
can they ever ask a compare 6marker with keratin or elastin, i've only ever seen collagen
It’s possible - but they would have to give you some information about keratin/elastin as they wouldn’t expect you to memorise details of their structure (but you would then compare with haemoglobin structure which you do need to know about)
for question 22, what is that practical called?
That’s a microbiology PAG - antibiotic testing
anyone know what the google drive link is ??
he has it in the description
why is a level biology so hard
Here are 5 reasons…
1. Spans scales from DNA (10nm) to ecosystems (1,000 km)
2. So many variables it’s hard to control in experiments
3. Maths and statistics all the way through to essays
4. A lot of educated guessing
5. Studies the most complicated thing in the known universe = human body
can someone please tell me what happens if i wrote on the sides of my paper outside the lines will it still get marked???
your paper will get requested for physical review, and they will mark your paper physically. don't worry
@@harshaanand4620 i rlly hope soooo my exam board is ocr A i heard some exams boards legit cut the paper so if u write ur writing is cut aswell
Fun fact: he used to be my science teacher
I envy u
Woah what's his first name
If I start now and learn everything on advance info can I get at least a B grade ?????
yes its just about possible but start now! i mean immediately. spend 2/3 weeks doing as much content revision as possible then you should shift focus and be doing practice exam questions (so if you want to use stuff on my channel i'd say first step do all the mindmaps on the topics coming up, then you can do practice tests and runthroughs and then stuff on maths and physics tutor for example). good luck!
Thank you so much can you also attach answers for 6 mark questions please
@@diamond-zb6rl unlikely I’m afraid. Perhaps team up with someone else, trade answers and give feedback on each other’s