Chap 14 (Part 3) Control of Blood Glucose Concentration | Cambridge A-Level 9700 Biology
Вставка
- Опубліковано 31 тра 2024
- Based on the NEW! 2022-2024 syllabus
Cambridge Assessment International Education
9700 A2 Biology
Full Chapter 14 playlist:
• Chapter 14 - Homeostas... 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
Hi, Mrs.Beh! I'm confused about something. At 28:00 you said the glucose in blood lowers water potential of blood, and one of the things it results in is dilute urine. Isn't low water potential detected by hypothalamus, which causes ADH to be released from posterior pituitary, resulting in higher blood water potential and more concentrated urine?
Yes i meant that. Ohno, what did i say?!?
@@behlogy The notes say dilute urine is produced 😟
''half of u are in front of a computer n eating something'' was on point. Anyways i hope i can find a channel similar to this for chemistry as well
😂 My students recommend Allery Chemistry and Alt Academy. Hope you find it too!
Have you found one?😭
my exam is in 8 hours and this video js saved my whole life
Thank u so much for making these, ur a life saver
your videos are very helpful thankyouu
thank you thank you thank you !
Your video is very useful. It helped me out especially with how the negative feedback mechanisms are involved with regulating blood glucose concentration with reference to insulin in liver and muscle cells as well as to glucagon in liver cells. Overall this video is a great resource for refining my understanding on homeostasis in general.
So glad it helped! 😊
thank you so much!! these videos are amazing. i wanted to ask whether only watching these videos is sufficient for exam revision?
Hellooo! While these are quite complete, I highlyyy recommend doing past years too.
hello,these vids r rlly helpful so tyy , i wanted to ask if mellitus diabetes type 1 and 2 is still in the syllabus
Yep
Hello Ms. Beh, I just had a question regarding the urine dipstick tests. In your video you said that glucose ----> gluconolactone + hydrogen peroxide in presence of glucose oxidase catalyst. But I think in the textbook and one of the 2022 past papers (May/June 41) they say that glucose ----> gluconic acid + hydrogen peroxide in presence of glucose oxidase catalyst instead. Which one is correct ?
Gluconolactone is a cyclic ester of D-gluconic acid. So i guess it would both work. My formula was based on the textbook
in the syllabus i says limited to glucagon. do we have to study insulin as well ?
Yes! The syllabus under 14.1 (10) says "explain how negative feedback control mechanisms regulate blood glucose concentration, with reference to the effects of insulin on muscle cells and liver cells and the effect of glucagon on liver cells"
Hi Ms. Beh! I had similar questions for this vid also:
1. What's the control centre? Is it the pancreas, overall?
2. In the book the effectors are liver and muscle cells? In past papers is it alpha and beta cells? In that case there both receptors and effectors? Thanks in advance)
1) Control centre typically refers to the brain. In this case, no control centre per se bcs this pathway doesnt involve the brain.
2) huh never noticed that the book said that! The effectors can be alpha and beta cells, and muscle cells, and liver cells hahah. Again, they all csrry out processes and carry out a response. Just in different ways. If you are unsure, write all three as the answer in exams!
miss, if we run out of space and just write the summarized version like "inhibits gluconeogenesis" will they still give us a mark? As the statement doesnt explain what the glucose was produced from.
Usuallyyy it's okay, but not every markscheme is as lenient. So i would encourage you to write in as much detail as possible!
hello, i have a small question. if u had to choose the most 5 important chapters of a level biology, which one would those chapters be? thank you from now and appreciate ur content :)
Hello! That's a....tough question. Bcs people tend to just study the "most important" ones only... but in fact, all chaps are important and are interconnected. Also, every chapter comes out for every paper! So don't skip any!
But okay... important *concepts* that apply throughout AS and A2 i think would be...
- prokaryotic, eukaryotic and viral cell structure
- biological molecules, esp proteins
- enzymes
- transport mechanisms
- DNA structure, transcription and translation
- mutation
- cell division (mitosis and meiosis)
These concepts are basics in AS, but tend to appear again and again throughout the syllabus.
@@behlogy got it, thank you
God bless you Ma'am
I had a question is adrenaline still part of course because i was going through the syllable and i didn't found it in syllable
Yes 100%
@@behlogyMiss are you sure?
I checked the textbook the new edition it's not mentioned there and also in the syllabus it's not there (2022-2024)
@@behlogy its not there for 2022-2024
is pancreas, exocrines and endocrines in the syllabus? because i havent seen that there is cell signalling, insulin stuff like that
Yep
miss is adenylyl cyclase also written as adenyl cyclase because the syllabus writes it as adenylyl while your video has adenyl
It's the same thing! Both are accepted
@@behlogy thank you
in diabetics, why are proteins and fats used for respiration when the glucose isn't entering certain tissues only? like isnt it going to enter all respiring tissue except the liver, muscles and fats
In general, glucose isnt getting absorbed into ALL cells properly, and converted into glycogen. So it stays in the bloodstream and affects osmotic balance (aka water leaves the cells more/ less water is absorbed). so it's not just specific organs
are adrenaline and diabetes in the syllabus?
Yes!
is rhis the last part for chapter 14?
there's plant hormones! i have all of that in one video.
@@behlogy okay thankyouuu
miss beh , urine analysis is removed from syllabus 2024!!!!
Chillll, i still saw it in those harder questions, bcs they assume you should know from your current knowledge.
im gonna get an A* and it’s all cuz of u🫶🏼