A level Biology Help
A level Biology Help
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What is it like to study a Bioscience at University? Biochem&Genetics at Sheffield and Uni Q&A
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!!!
Переглядів: 2 112

Відео

REQUIRED PRACTICAL 9 - AQA A LEVEL BIOLOGY
Переглядів 14 тис.2 роки тому
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
Переглядів 20 тис.2 роки тому
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
Переглядів 22 тис.2 роки тому
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
Переглядів 14 тис.3 роки тому
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
Переглядів 17 тис.3 роки тому
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
Переглядів 12 тис.3 роки тому
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
Переглядів 37 тис.3 роки тому
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
Переглядів 7 тис.3 роки тому
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
Переглядів 6 тис.3 роки тому
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
Переглядів 14 тис.3 роки тому
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
Переглядів 6 тис.3 роки тому
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
Переглядів 10 тис.3 роки тому
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
Переглядів 14 тис.3 роки тому
In this video, I explain ALL of the content required for the "DNA Probes" section for AQA A Level Biology. This includes: what DNA probes are, how they work, why they're used and DNA hybridisation. Times 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 comment if y...
RECOMBINANT DNA TECHNOLOGY - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Переглядів 31 тис.4 роки тому
RECOMBINANT DNA TECHNOLOGY - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
USING GENOME PROJECTS - AQA A LEVEL BIOLOGY
Переглядів 7 тис.4 роки тому
USING GENOME PROJECTS - AQA A LEVEL BIOLOGY
GENE EXPRESSION & CANCER - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Переглядів 18 тис.4 роки тому
GENE EXPRESSION & CANCER - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
REGULATION OF TRANSCRIPTION & TRANSLATION - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Переглядів 20 тис.4 роки тому
REGULATION OF TRANSCRIPTION & TRANSLATION - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
STEM CELLS - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Переглядів 13 тис.4 роки тому
STEM CELLS - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
GENE MUTATIONS (A2) - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Переглядів 16 тис.4 роки тому
GENE MUTATIONS (A2) - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
POPULATIONS IN ECOSYSTEMS - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Переглядів 29 тис.4 роки тому
POPULATIONS IN ECOSYSTEMS - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
EVOLUTION + SPECIATION - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Переглядів 19 тис.4 роки тому
EVOLUTION SPECIATION - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
POPULATION GENETICS - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Переглядів 13 тис.4 роки тому
POPULATION GENETICS - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
INHERITANCE - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Переглядів 53 тис.4 роки тому
INHERITANCE - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
CONTROL OF BLOOD WATER POTENTIAL - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Переглядів 22 тис.4 роки тому
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
Переглядів 21 тис.4 роки тому
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
Переглядів 27 тис.4 роки тому
PRINCIPLES OF HOMEOSTASIS NEGATIVE FEEDBACK - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
MUSCLE CONTRACTION - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Переглядів 21 тис.4 роки тому
MUSCLE CONTRACTION - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
SYNAPTIC TRANSMISSION - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Переглядів 20 тис.4 роки тому
SYNAPTIC TRANSMISSION - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH
NERVE IMPULSES - AQA A LEVEL BIOLOGY + EXAM QUESTIONS RUN THROUGH
Переглядів 33 тис.4 роки тому
NERVE IMPULSES - AQA A LEVEL BIOLOGY EXAM QUESTIONS RUN THROUGH

КОМЕНТАРІ

  • @user-sl4pw3fr2k
    @user-sl4pw3fr2k 7 днів тому

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

  • @Beautifulday1231r
    @Beautifulday1231r 2 місяці тому

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

  • @bogdanmocanu6600
    @bogdanmocanu6600 2 місяці тому

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

  • @AmilRegi
    @AmilRegi 2 місяці тому

    love your video really helpful thankyou

  • @user-kl5ug8js9z
    @user-kl5ug8js9z 2 місяці тому

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

  • @Letik3x
    @Letik3x 2 місяці тому

    Thank you so much for these video ❤❤

  • @skyline-123-GTR
    @skyline-123-GTR 3 місяці тому

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

  • @qahhxr6996
    @qahhxr6996 3 місяці тому

    Required practical 4 pls

  • @olusk6457
    @olusk6457 3 місяці тому

    What an amazing video

  • @Yoemono_313
    @Yoemono_313 3 місяці тому

    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 3 місяці тому

      easy my a level exam is in an hour 😂

  • @hxrmxn2034
    @hxrmxn2034 3 місяці тому

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

  • @latifahwakelee6491
    @latifahwakelee6491 3 місяці тому

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

    • @AlevelBiologyHelp
      @AlevelBiologyHelp 3 місяці тому

      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 3 місяці тому

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

  • @the1makra908
    @the1makra908 3 місяці тому

    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

  • @user-vi2mj5uy7r
    @user-vi2mj5uy7r 4 місяці тому

    Im so grateful for you thank you❤

  • @ryou6453
    @ryou6453 4 місяці тому

    (:

  • @nisargapoudel3911
    @nisargapoudel3911 4 місяці тому

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

  • @arjunlayall8503
    @arjunlayall8503 5 місяців тому

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

  • @nisargapoudel3911
    @nisargapoudel3911 5 місяців тому

    could u go through the other required practicals for bio?

  • @rubiksworld2170
    @rubiksworld2170 5 місяців тому

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

    • @AlevelBiologyHelp
      @AlevelBiologyHelp 5 місяців тому

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

  • @dfszf4743
    @dfszf4743 5 місяців тому

    this topic is so long😪

    • @dfszf4743
      @dfszf4743 5 місяців тому

      hardest topic 100% for me

  • @estherchukwuma9538
    @estherchukwuma9538 5 місяців тому

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

    • @a_active9904
      @a_active9904 3 місяці тому

      SAME thats what i thought

    • @arjunlayall8503
      @arjunlayall8503 2 місяці тому

      you reject null hypothesis when value for t exceeds critical value

  • @haileycoetzee4708
    @haileycoetzee4708 5 місяців тому

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

  • @KashHoniyar-vz1bm
    @KashHoniyar-vz1bm 5 місяців тому

    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 5 місяців тому

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

  • @mahfoozvalli5970
    @mahfoozvalli5970 6 місяців тому

    thanks video was very helpful

  • @Lavin.
    @Lavin. 6 місяців тому

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

    • @AlevelBiologyHelp
      @AlevelBiologyHelp 5 місяців тому

      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? :)

  • @user-iy6zt3gv2e
    @user-iy6zt3gv2e 6 місяців тому

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

  • @kateridley5342
    @kateridley5342 6 місяців тому

    what are some control variables for this experiment?

  • @swordam1063
    @swordam1063 6 місяців тому

    i dont know why you have so little subscribers best revision channel out there

  • @lilimae3092
    @lilimae3092 6 місяців тому

    In the very first exam question, it asks how mRNA is produced in the Nucleus. I thought you would right about Splicing as that makes mature mRNA from Pre-mRNA. However, you said you need to write about transcription, but why when in transcription Pre-mRNA is produced not mRNA????

    • @AlevelBiologyHelp
      @AlevelBiologyHelp 6 місяців тому

      You can write about splicing but it's mainly writing about transcription given that it's a 6 mark question (splicing doesn't have many steps so you can't get many marks on that). If you look at the mark scheme, you can write any 6 of the points there. :)

  • @razzyysf8435
    @razzyysf8435 7 місяців тому

    please explain, what is HA^-1 ?

    • @AlevelBiologyHelp
      @AlevelBiologyHelp 6 місяців тому

      Hi! It means "per hectare". A hectare is a measure of an area size. The graph is showing gross productivity in an area (as the text says) so that's why you include it in the units. Hope this helps!

  • @s.yusuf01
    @s.yusuf01 7 місяців тому

    at 23:53 i dont understand the answer you put in how does promotor DNA mean the sheep isn't going to be killed?

    • @AlevelBiologyHelp
      @AlevelBiologyHelp 7 місяців тому

      Because the DNA is obtained from milk so the sheep doesn't need to be killed to get the DNA :)

  • @akwasiappiah5835
    @akwasiappiah5835 7 місяців тому

    How is the rate of mutation affected by the environment? 13:14

  • @Letik3x
    @Letik3x 7 місяців тому

    Thank you - my teacher taught this topic today , I had no idea what’s going on … you explained it so well 🎉😊

  • @Lavin.
    @Lavin. 7 місяців тому

    I love this video! thank you. just a quick question, ive seen some other synapse videos and they dont mentioned acetylcholine. why is that?

  • @Shaun.1
    @Shaun.1 7 місяців тому

    Your explanations are on point I like how you explain even the smallest details really helpful

  • @saddahhussin1818
    @saddahhussin1818 7 місяців тому

    this was so helpful thank you so much

  • @Lavin.
    @Lavin. 8 місяців тому

    05:59 states that one of the adaptations for gas exchange in fish is that the filaments are thin increasing the rate of diffusion. doesnt the rate of diffusion decrease becuase that is what I saw in the mark scheme???

    • @BawaDumi-Leslie
      @BawaDumi-Leslie 5 місяців тому

      I think it increases because it’s thin so it has a shorter diffusion distance = increase rate of diffusion

  • @Lavin.
    @Lavin. 8 місяців тому

    hello, what about how to observe the position of starch grains in the cells when using an optical (light) microscope. I dont think it was mentioned in the video? can someone please help?

  • @lilstylo602
    @lilstylo602 8 місяців тому

    BB

  • @Lavin.
    @Lavin. 8 місяців тому

    wow wow wow. I love watching your videos so much. everything you say is exaclty as it is from the mark scheme. you dont include too much information only excalty what is needed specifically from the mark scheme. making it easy and simpler to understand the information without too many other points which arent even worth being mentioned. so thank you!:)

  • @Lavin.
    @Lavin. 8 місяців тому

    I dont get much about the ester bonds. can someone please please help me:)

  • @chu2000
    @chu2000 8 місяців тому

    at 5. on mass flow hypothesis, shouldn't it be water exit by osmosis then decreased hydrostatic pressure? it doesnt make sense to me

  • @HEhab-ud7ui
    @HEhab-ud7ui 8 місяців тому

    hi thank u so much for this video but where can i find the rest of these questions (eg: 3.1 , 3.2 , 3.3 ) so the whole question of each graph that you have explained

  • @mr.r2207
    @mr.r2207 8 місяців тому

    Isn’t the sarcoplasm the cytoplasm of muscle cells? Why does it say it’s the cell itself?

  • @ZainabHussain-cg9nx
    @ZainabHussain-cg9nx 9 місяців тому

    good content produced I just feel like you're reading straight off the specification and not quite explaining things in detail

  • @jhaddjeri
    @jhaddjeri 9 місяців тому

    for the last question could i explain the curves plateau because at higher temperatures(outside the optimal range) the hydrogen and ionic bonds in the enzymes tertiary structures are affected resulting in change in shape of active site, therefore the enzymes used in the reaction wont be able to form E-S complexes and therefore rate of reaction slows down, or does it have to be because substrate is used up.

  • @AshBeastFPS
    @AshBeastFPS 9 місяців тому

    hii amazing vid but did u mention vesicles?? i didnt hear much on it and dont know if its required knowledge lol

    • @AlevelBiologyHelp
      @AlevelBiologyHelp 7 місяців тому

      In the exam if you're told to describe the action of a lysosome, you would say that they fuse with a vesicle (which is what contains an engulfed foreign substance/pathogen) and release lysozyme (examiner prefers "hydrolytic enzyme" - you would still get a mark for putting lysozyme).

  • @lizzy2804
    @lizzy2804 9 місяців тому

    this was amazing