Відео

😂💕

Wishing you best of luck! 🤞

Good luck! 🤞

Some topics can come up on both papers like respiration, enzymes, mitosis and meiosis and diffusion, active transport and osmosis ( not the osmosis required practical though). It is unlikely you will have any questions about food tests. Perhaps just diabetic urine which could be tested using Benedict’s solution? Or somebody with high blood pressure having protein in their urine? Other than that probably won’t need to know them! 😊

Ur lost my guy this is it

Hi, don’t forget to go back to the start of the question and look at the method. :)

@@BiologyBreakdownwithMrsH thank you!

Good luck! 🍀

@@BiologyBreakdownwithMrsH Thanks!!!

Respiration and photosynthesis are different reactions. Plants carry out photosynthesis in the light but they carry out respiration all of the time. Photosynthesis in chloroplasts, respiration in mitochondria. Good luck 😊

@@BiologyBreakdownwithMrsH Oh okay I got confused. Thanks for the clear up.

@ghostbusteez no worries 😌

Thank you! 🙏😊

Good question! No, you don’t have to write that much and you can even use bullet points if you wish. For the sake of the video I just wanted to cover as much detail as possible 😊

Hey Piplup! This is higher tier 😊

Absolutely! Maurice Wilkins and many other Scientists’ (Chargaff for example) research and theories helped along the way whose names should be known too 😊

Maybe? Are you referring to leaving the word solution out? best to put iodine solution or Benedict’s solution if you can remember 😊

Good luck! 🍀

@@BiologyBreakdownwithMrsH thank you! Do you have any tips for unit 3 (practical) edexcel? I’m taking the entire AS in the first semester so I study at home, alone. Is there any new material or info I need to solve unit 3 or is it just the structure of the questions that’s different? Thank you for your amazing videos anyway:)

@darkpheonix5216 hi, I’m afraid I’m not familiar with Edexcel, I’ve only taught OCR A Level. Just do as many past paper questions as you can :)

@@BiologyBreakdownwithMrsH no problem! Thank youuu

Probably? Not sure what that is but Chi Squared is definitely part of the A Level Biology course 😊

Thank you 🙏 when I get some time 😊

The 4 came from 3+1, cuz the ratio was 3:1 for the purple:white phenotype ratio

Absolutely! 😊 Using the word ‘evaporation’ is important when describing transpiration!

Hi Alannah! Yes 👍 😊

@@BiologyBreakdownwithMrsH thank you. Your a big help for me this year. Thank you so much❤️

Hi yes, you’re very right. This is quantitative Benedict’s solution which gives a white precipitate and our technician tells me this works better for making calibration curves. If you need to know any more technical details I will have to ask her, I’m just the teacher! 😂😊

@@BiologyBreakdownwithMrsH ahh ok thanks a lot Mrs. H, and no, I don’t have any more questions. 😃🫶

Hi, filtering could work if you have good enough filters, I’d have to check with the technician. Ideally a centrifuge is the best option but we don’t have one at our school so wait for the precipitate to settle. As long as we don’t disturb the precipitate our results tend to be ok 😊

@@BiologyBreakdownwithMrsH Hi, thanks for your quick response! Could you please expan on the technique you used to extract just the solution without disturbing the precipitate? I think the video mentions something about squeezing the dropper before placing it in the liquid…..

Sure! squeeze the dropping pipette before you put it into the solution, keep it squeezed while you put it in, once in the solution (above the precipitate) gently release the squeeze and the pipettes should fill. Gently remove the pipette from the solution and then squeeze the contents out into the cuvette. I doubt you will be asked this in an exam but it’s good to know. Lots of students put the pipette into the solution and then squeeze and this will blow outwards and disturb the precipitate. Try it using water first just to see what I mean 😊

@@BiologyBreakdownwithMrsH Thanks a ton Mrs H!! ❤ I am an IBDP student and am planning on using glucose spectrophotmetry as a part of my Biology HL IA, and the procedure you’ve used is very straightforward. This video helps me a lot!! 🫶🫶

Wow, that sounds pretty impressive! Good luck 😊

🤞🤞

What a lovely thing to say! 🙏 I’m glad the paper went well today! 😊

Hi, the link is in the description but I have put it here for you too! Best of luck! filestore.aqa.org.uk/sample-papers-and-mark-schemes/2019/june/AQA-8464B2H-QP-JUN19.PDF

Thank you

Hiya, farmers need to breed a male and female together to get the desired characteristics. Choosing a female is easier because she (if she’s given birth already) can produce milk and farmers can select the female that gives the biggest volume of lower fat milk than other females. To select the best male, he can’t make milk so the farmers need to look at the milk made by his female offspring, if his female offspring make good milk then there is a chance they have inherited some alleles from him that give them the ability to make good milk. Does that make sense? Is that what you were asking? Selective breeding is not a perfect science, farmers can hope they have selected the best male and best female to breed but it doesn’t necessarily work!

oh and its june 2021

😔I’m not going to be able to get that ready for you in time for next week’s exam. Have a look at the paper 2 mock exam video, this will give some extra practice and some of my other videos have exam questions by topic e.g plant hormones, inheritance. Kidney etc …😊🍀

okay

I hate all sciences with all my might. Higher tier is a living hell.

@@duskraiderci its worth it if im getting A* at the end of the day

If rate is on the y axis then this is usually ok, as long as it looks ok/is part of the natural trend/shape. Otherwise, if anything other than rate on the y axis just stick to doing a straight line or curve through just your plotted points!!