Saving me right now. Mocks are approaching and i making notes alongside your videos and they’re being maintained inside my head. I’M SO GLAD YOU’RE STRAIGHT TO THE POINT ! You don’t even lack the detail needed when answering exam questions so really means a lot. Thank you, thank you x
My exam board is OCR A but these videos are very helpful even though they're designed for AQA. There are not a lot of good channels that make videos specifically for ocr a :(
BRO FREESCIENCELESSONS COVERS AQA OCR AND EXECEL AND MAKES VIDEOS SPECIFICALLY FOR OCR TOO I RECCOMEND HIM EVEN THOUGH MISS ESTRUCH IS BEST FOR AQA@@coreywilko9418
Thank you for this video, we went over this very briefly at school and my notes had lots of gaps! Are your videos specific to the biology a level aqa specification?
hello, I enjoy your videos they hit exactly the spec. however, I have a question, isn't water a polar substance? so it shouldn't pass through easily right?
@@Agirl3216 Water can diffuse through the plasma membrane directly, and through aquaporin proteins. www.quora.com/How-does-water-diffuse-a-membrane this has a good image of this.
@@0x1_chips The hydrophilic heads attract the water into the middle of the bilayer. The hydrophobic tails do then repel the water, but they repel the water to the other side of the bilayer, helped by the opposite hydrophilic head attracting it. This enables water to pass through, also helped by it being a very small molecule.
Hey, there are protein channels (aquaporins) that water can diffuse through because it is such a small molecule. As it is so small it can diffuse through the membrane too. It can dissolve in the charged hydrophillic heads, and the hydrophobic tails repel the water to the other side of the membrane. Hope that helps.
thank you so much for ur videos theyre really helpful! i just have one question you know how it says peripheral proteins can bind to make glycoproteins and glycolipids im a bit confused because peripheral proteins are proteins so how can they make glycolipids😅
Hi do we need to know the individual characteristics of the phospholipids? e.g. phosphate group, the charges, the fact that the tails are made up of saturated and unsaturated fatty acid chains?
@@MissEstruchBiology miss estruch i have 1 more question, i watched one of your protein structure videos and you made no reference to globular/fibrous proteins and i understand its not on the spec but do you still its worthwhile to learn the information?
Ohh,Ma'am one week without videos😑🤔 Plez, go ahead. We miss you. "Can i demand a simple order." Hope if you don't mind you have a time to teach me online, Some methodolgy, how to teach different levels of IGCSE biology. Even one hour per week.
Hello! I'm afraid due to the change in working style because of schools closing, due to the coronavirus, I am only finding enough time to make one video a week at the moment. That is really flattering that you would like some support, and I am sorry I am not to be able to offer these lessons, but unfortunately, I am stretched to the limit with work and don't have any extra time I could do this in.
