A level Biology Help
A level Biology Help
  • Видео 61
  • Просмотров 1 546 386
REQUIRED PRACTICAL 4 - AQA A LEVEL BIOLOGY
In this video, I go through the background, method, risk assessment, results, and an exam question on required practical 4 for AQA A Level Biology - Investigation into the effect of a named variable on the permeability of cell-surface membranes. This is useful for both your practical endorsement and exam.
Please leave a comment if you have any requests or questions! :)
Просмотров: 33

Видео

What is it like to study a Bioscience at University? Biochem&Genetics at Sheffield and Uni Q&A
Просмотров 2,2 тыс.2 года назад
In this video, I give you all an insight into what it's actually like to study on my course. Please leave a comment if you have any questions!! www.biosnip.net/ is an excellent resource where you can sign up to a newsletter which gives you extra reading articles based on the A Level syllabus - perfect for getting those higher marks in the paper 3 essay!!!
REQUIRED PRACTICAL 9 - AQA A LEVEL BIOLOGY
Просмотров 16 тыс.2 года назад
In this video, I give you an overview of practical 9 for AQA A Level Biology. This is included in paper 2 for the 2022 exams. I also go through an exam question relevant to the practical. Please leave a comment if you have any questions - I'd be delighted to answer them! BioSnip : www.biosnip.net/
REQUIRED PRACTICAL 6 - AQA A LEVEL BIOLOGY
Просмотров 20 тыс.2 года назад
In this video, I take you through the sixth required practical for AQA A Level Biology. I then go through an exam question related to the practical. If you have any requests for videos or questions, please leave them in the comments, I'll be delighted to answer them!
REQUIRED PRACTICAL 3 (OSMOSIS) - AQA A LEVEL BIOLOGY
Просмотров 24 тыс.2 года назад
In this video, I take you through the third required practical for AQA A Level Biology - Production of a dilution series of a solute to produce a calibration curve with which to identify the water potential of plant tissue. I also go through an exam question related to the practical. If you have any questions, please leave a comment - I'll be delighted to answer them!
MATHS SKILLS - AQA A LEVEL BIOLOGY
Просмотров 15 тыс.3 года назад
In this video, I give an overview of all the Maths Skills that you need for AQA A Level Biology. Please leave a comment if you have any questions or requests for future videos!!! :)
REQUIRED PRACTICAL 2 - AQA A LEVEL BIOLOGY
Просмотров 18 тыс.3 года назад
In this video, I take you through the second required practical for AQA A Level Biology: Preparation of stained squashes of cells from plant root tips; set-up and use of an optical microscope to identify the stages of mitosis in these stained squashes and calculation of a mitotic index. I also go through an exam questions relating to this practical. Please comment if you have any questions, I'l...
HOW TO OVERCOME THE TOUGH MARK SCHEME - AQA A LEVEL BIOLOGY
Просмотров 12 тыс.3 года назад
A bit of advice on how to overcome the tough mark scheme so that you can get as many marks as possible. I guess this is a face reveal too ;) Recommended resources: www.physicsandmathstutor.com/biology-revision/a-level-aqa/ www.aqa.org.uk/subjects/science/as-and-a-level/biology-7401-7402 www.primrosekitten.com/
REQUIRED PRACTICAL 1 (AS) - AQA A LEVEL BIOLOGY
Просмотров 41 тыс.4 года назад
In this video, I go through the variables, procedure, theory and results behind the first required practical for AQA A Level Biology : Investigation into the effect of a named variable on the rate of an enzyme-controlled reaction. I also go though an exam question based on this practical. If you have any questions, please leave a comment! :)
REQUIRED PRACTICAL EXAM QUESTIONS : WHAT COULD THEY ASK YOU? - AQA A LEVEL BIOLOGY EXAM SKILLS
Просмотров 7 тыс.4 года назад
In this video, I go through what could be asked of you in the written exams in relation to the required practicals/practical skills. Please leave a comment if you have any questions or specific requests for videos :) Time stamps are in the comments!
ESSAY TIPS - AQA A LEVEL BIOLOGY - EXAM SKILLS
Просмотров 6 тыс.4 года назад
In this video, I go through some general advice on how to approach the paper 3 essay for AQA A Level Biology and also some specifics about what the mark scheme is asking. I also go through a couple of examples. Please leave a comment if you have any questions! :)
HOW TO INTERPRET GRAPHS + TABLES - AQA A LEVEL BIOLOGY EXAM SKILLS
Просмотров 15 тыс.4 года назад
In this video, I go through some general advice on how to analyse/interpret graphs for A Level Biology. I also go through a few past exam questions. Please leave a comment if you have any questions, I'll be more than happy to answer them! :)
HOW TO EVALUATE CONCLUSIONS - AQA A Level Biology Exam Skills
Просмотров 6 тыс.4 года назад
In this video, I take you through how to answer the "evaluate conlcusions" questions for AQA A Level Biology, although this applies to other exam boards too. I also go through a couple of examples from past papers. Please leave a comment if you have any questions, I would be more than happy to answer them! :)
GENETIC FINGERPRINTING - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Просмотров 10 тыс.4 года назад
In this video, I explain ALL of the content required for the "Genetic Fingerprinting" section for AQA A Level Biology. This includes: what genetic fingerprinting is, VNTRs, gel electrophoresis and DNA profiling. Time stamps are in the comments. The content in this video crosses over with other exam boards too. I also go through a few exam questions and explain their mark schemes. Please leave a...
DNA PROBES - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Просмотров 14 тыс.4 года назад
DNA PROBES - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
RECOMBINANT DNA TECHNOLOGY - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Просмотров 31 тыс.4 года назад
RECOMBINANT DNA TECHNOLOGY - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
USING GENOME PROJECTS - AQA A LEVEL BIOLOGY
Просмотров 8 тыс.4 года назад
USING GENOME PROJECTS - AQA A LEVEL BIOLOGY
GENE EXPRESSION & CANCER - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Просмотров 18 тыс.4 года назад
GENE EXPRESSION & CANCER - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
REGULATION OF TRANSCRIPTION & TRANSLATION - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Просмотров 20 тыс.4 года назад
REGULATION OF TRANSCRIPTION & TRANSLATION - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
STEM CELLS - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Просмотров 14 тыс.4 года назад
STEM CELLS - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
GENE MUTATIONS (A2) - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Просмотров 17 тыс.4 года назад
GENE MUTATIONS (A2) - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
POPULATIONS IN ECOSYSTEMS - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Просмотров 31 тыс.4 года назад
POPULATIONS IN ECOSYSTEMS - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
EVOLUTION + SPECIATION - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Просмотров 19 тыс.4 года назад
EVOLUTION SPECIATION - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
POPULATION GENETICS - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Просмотров 14 тыс.4 года назад
POPULATION GENETICS - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
INHERITANCE - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Просмотров 55 тыс.4 года назад
INHERITANCE - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
CONTROL OF BLOOD WATER POTENTIAL - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Просмотров 22 тыс.4 года назад
CONTROL OF BLOOD WATER POTENTIAL - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
CONTROL OF BLOOD GLUCOSE CONCENTRATION - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Просмотров 22 тыс.4 года назад
CONTROL OF BLOOD GLUCOSE CONCENTRATION - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
PRINCIPLES OF HOMEOSTASIS + NEGATIVE FEEDBACK - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Просмотров 27 тыс.4 года назад
PRINCIPLES OF HOMEOSTASIS NEGATIVE FEEDBACK - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
MUSCLE CONTRACTION - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Просмотров 22 тыс.4 года назад
MUSCLE CONTRACTION - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
SYNAPTIC TRANSMISSION - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Просмотров 21 тыс.4 года назад
SYNAPTIC TRANSMISSION - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH

Комментарии

  • @karsondhakal8139
    @karsondhakal8139 14 часов назад

    thank you!

  • @Ayshabegum-r1h
    @Ayshabegum-r1h 3 дня назад

    This Channel is so useful, I wish I had found it earlier. I also love that the layout of the playlists are exactly like the specification!

  • @haadiyahali515
    @haadiyahali515 4 дня назад

    Really helpful video thanks, could you please make one for required practical 4?

  • @auroraxx-vs7bu
    @auroraxx-vs7bu 4 дня назад

    what do you mean by use an external source to find water potential of sucrose solution?

    • @AlevelBiologyHelp
      @AlevelBiologyHelp 4 дня назад

      It means using something a textbook or the internet to find out what the water potential would be at that particular mass/concentration because you can't find it out from the experiment itself. :)

  • @nefertiiti.777
    @nefertiiti.777 12 дней назад

    you're an absolute life saver for this thank you so much i wish you the best in life

  • @RoseWhitehead-mx8od
    @RoseWhitehead-mx8od 20 дней назад

    It mentions in my textbook that the oestrogen releases an inhibitor molecule that prevents transcription causing proto-oncogenes of breast tissue to develop into oncogenes and these oncogenes increase the rate of cell division. Please could you explain this?

  • @DanTheAnimator4978
    @DanTheAnimator4978 25 дней назад

    Both you and Miss Estruch are definitely the most helpful A-Level biology youtube channels!

  • @SamuelOlendo-b2w
    @SamuelOlendo-b2w 28 дней назад

    I love it you're the best teacher

  • @Beautifulday1231r
    @Beautifulday1231r 29 дней назад

    Would it be crucial and a must to remember name of adenyl cyclase

  • @ImranAwan-n9s
    @ImranAwan-n9s Месяц назад

    Do you have any videos for stats tests?

    • @AlevelBiologyHelp
      @AlevelBiologyHelp 16 дней назад

      Hi! I have a video on Maths skills which contains stuff on the stats tests :)

  • @SomeoneCoolAsHell
    @SomeoneCoolAsHell Месяц назад

    Super helpful thank you!

  • @IntelligentDayyib
    @IntelligentDayyib Месяц назад

    Can I please ask what are the independent, dependent and control variable cause I have no idea

  • @vliss4971
    @vliss4971 Месяц назад

    thanks i have my practical tmr so this is very helpful

  • @hussaink-c7v
    @hussaink-c7v Месяц назад

    Is the procedure the exact same for different independent variables?

  • @jasmine-kg7dd
    @jasmine-kg7dd 2 месяца назад

    Hii, do you have any extra information that we can add for an A* to 25 markers?

  • @zahramubashar7664
    @zahramubashar7664 2 месяца назад

    Can y plz help me with the graphs exam questions for mitosis?

    • @AlevelBiologyHelp
      @AlevelBiologyHelp 16 дней назад

      Sure, I will make a video :)

    • @zahramubashar7664
      @zahramubashar7664 13 дней назад

      @@AlevelBiologyHelptyysm And some tips for how to attempt exam questions and to know what to put in the questions

    • @AlevelBiologyHelp
      @AlevelBiologyHelp 7 дней назад

      @zahramubashar7664 I have an exam skills playlist :)

  • @Kat.lmr15
    @Kat.lmr15 2 месяца назад

    This was SO HELPFUL THANK YOUU

  • @IrfanRevision
    @IrfanRevision 2 месяца назад

    14:45

  • @user-sl4pw3fr2k
    @user-sl4pw3fr2k 4 месяца назад

    Does this contain everything I need to know for the spec?

  • @Beautifulday1231r
    @Beautifulday1231r 6 месяцев назад

    Do we not need to know further detail how trisomy or polyploidy occurs

  • @bogdanmocanu6600
    @bogdanmocanu6600 6 месяцев назад

    watching this 2 hours before my a level bio paper 2, thanks for your help.

  • @AmilRegi
    @AmilRegi 6 месяцев назад

    love your video really helpful thankyou

  • @nvrsq-t1x
    @nvrsq-t1x 6 месяцев назад

    Thank you so much for your help - your style of videos are really helpful!

  • @Letik3x
    @Letik3x 6 месяцев назад

    Thank you so much for these video ❤❤

  • @skyline-123-GTR
    @skyline-123-GTR 7 месяцев назад

    This is the best yet channel for aqua a level bio. Revising for paper 1 ❤

  • @qahhxr6996
    @qahhxr6996 7 месяцев назад

    Required practical 4 pls

  • @olusk6457
    @olusk6457 7 месяцев назад

    What an amazing video

  • @tomono_12
    @tomono_12 7 месяцев назад

    hello, is this everything you need to know for exams, also do you thibk I have time to go through all of AS content in 2 weeks and 2 days, not sure if I could

    • @SnellyDoggy
      @SnellyDoggy 7 месяцев назад

      easy my a level exam is in an hour 😂

  • @hxrmxn2034
    @hxrmxn2034 7 месяцев назад

    what organelle isletter M than on the first question at 20.19 seconds?

  • @latifahwakelee6491
    @latifahwakelee6491 7 месяцев назад

    how are you so good at answering exam questions, i know the content but find it really difficult to apply my knowledge

    • @AlevelBiologyHelp
      @AlevelBiologyHelp 7 месяцев назад

      It honestly gets better as you do more of them. You have to think about what they're actually asking, the topic your answer is based on, and the command word i.e. evaluate, describe, suggest etc. You get to know what key words they want you to write as you practise more!! :)

  • @khalid7247
    @khalid7247 7 месяцев назад

    u forgot to mention amylose and amylopectin in the starch part... 6:53

  • @the1makra908
    @the1makra908 7 месяцев назад

    You're a life saver but how can CAG be a VNTR if CAG codes for an amino acid ? because VNTRs are introns which are non coding sequences

  • @alishanamakula
    @alishanamakula 8 месяцев назад

    Im so grateful for you thank you❤

  • @ryou6453
    @ryou6453 8 месяцев назад

    (:

  • @nisargapoudel3911
    @nisargapoudel3911 8 месяцев назад

    i dont understand why we divide 15mins by 4 wouldnt it be multiply

  • @arjunlayall8503
    @arjunlayall8503 9 месяцев назад

    even 3 years on, you are extremely helpful and better than most teachers.

  • @nisargapoudel3911
    @nisargapoudel3911 9 месяцев назад

    could u go through the other required practicals for bio?

  • @rubiksworld2170
    @rubiksworld2170 9 месяцев назад

    How did you know it was a comparison question for q5 c ii?

    • @AlevelBiologyHelp
      @AlevelBiologyHelp 9 месяцев назад

      Because it is asking about table 2 and group 1, which has made a comparison with A and B. :)

  • @dfszf4743
    @dfszf4743 9 месяцев назад

    this topic is so long😪

    • @dfszf4743
      @dfszf4743 9 месяцев назад

      hardest topic 100% for me

  • @estherchukwuma9538
    @estherchukwuma9538 9 месяцев назад

    33:45 don’t u reject null hypothesis when the p value (the t value) is less than critical value

    • @a_active9904
      @a_active9904 7 месяцев назад

      SAME thats what i thought

    • @arjunlayall8503
      @arjunlayall8503 6 месяцев назад

      you reject null hypothesis when value for t exceeds critical value

  • @haileycoetzee4708
    @haileycoetzee4708 9 месяцев назад

    Wait I'm confused. I thought that Tumour Suppressor Genes produce proteins that inhibit continuous cell growth, not division.

  • @KashHoniyar-vz1bm
    @KashHoniyar-vz1bm 9 месяцев назад

    Hi thank you for all your help, just wanted to ask if all your topic videos are according to the specifications needs and if watching them is enough for covering content then off to exam questions ? Thank you!

    • @AlevelBiologyHelp
      @AlevelBiologyHelp 9 месяцев назад

      Hi - yes my videos are all according to the specification so everything that you need to know!!

  • @mahfoozvalli5970
    @mahfoozvalli5970 10 месяцев назад

    thanks video was very helpful

  • @Lavin.
    @Lavin. 10 месяцев назад

    hi, I dont get how to find out the tangent at 24:33 ....?

    • @AlevelBiologyHelp
      @AlevelBiologyHelp 9 месяцев назад

      So, basically a tangent is a straight line that "just touches" a curve and is used a calculate a gradient which in this case would give us the rate. They're used because it's very difficult to make accurate calculations with a curve. You can draw the tangent at any point on the curve and it can be any length because you'll get the same answer. To find the gradient (rate) it's just a case of dividing the y axis by the x axis. Hope this makes sense? :)

  • @SofiyaPretty
    @SofiyaPretty 10 месяцев назад

    lam getting interested and want to know more. 9:30pm

  • @kateridley5342
    @kateridley5342 10 месяцев назад

    what are some control variables for this experiment?