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Jo Phillips A Level Biology
United Kingdom
เข้าร่วมเมื่อ 14 ต.ค. 2013
Hi everyone!
I'm a Biology teacher and I make these videos to help my A Level students understand the more difficult concepts. You won't find lots of text or powerpoint slides in my videos, I like to use my own drawings to help focus the viewer on what I'm explaining. Each video focuses on a particular concept, rather than a whole topic, so you don't get overwhelmed!
All of the explanations follow the CIE Biology A Level syllabus in terms of the detail and terminology I use, but they should be helpful no matter what exam board are studying.
Good luck!
Jo Phillips
I'm a Biology teacher and I make these videos to help my A Level students understand the more difficult concepts. You won't find lots of text or powerpoint slides in my videos, I like to use my own drawings to help focus the viewer on what I'm explaining. Each video focuses on a particular concept, rather than a whole topic, so you don't get overwhelmed!
All of the explanations follow the CIE Biology A Level syllabus in terms of the detail and terminology I use, but they should be helpful no matter what exam board are studying.
Good luck!
Jo Phillips
AS Biology - Transport of carbon dioxide
As Biology - how carbon dioxide is transported around the body from the dissociation of carbonic acid to form hydrogencarbonate ions, and the production of carbaminohaemoglobin. Also explains briefly what the chloride shift is, and how the formation of hydrogen ions causes the dissociation of oxygen from oxyhaemoglobin.
มุมมอง: 523
วีดีโอ
AS Biology - Bohr Effect
มุมมอง 3468 หลายเดือนก่อน
AS Biology, Animal Transport Topic - Bohr Effect. Explanation of the oxygen dissociation curve, why haemoglobin oxygen saturation decreases in the lungs, the idea of cooperative binding and the effect of increasing carbon dioxide concentrations on decreasing haemoglobin's oxygen affinity.
A2 Biology - Crossing over
มุมมอง 1.3K2 ปีที่แล้ว
A Level Biology, A2 level. Topic inheritance & Genetics - An explanation of how crossing over can occur during prophase 1 of meiosis and how this produces new allele combinations in the gametes, introducing genetic variation.
AS Biology - Monoclonal Antibodies (The Hybridoma method)
มุมมอง 1.3K2 ปีที่แล้ว
AS Biology, Immunity Topic - Description of how monoclonal antibodies (Mabs) are made using the hybridoma method by fusion with myeloma cells to form hybridoma cells. Includes difference between monoclonal and polyclonal antibodies and why it's difficult to produce Mabs.
AS Biology - Phagocytosis
มุมมอง 5032 ปีที่แล้ว
AS Biology, Immunity Topic - The process of Phagocytosis by neutrophils. Includes details on opsonins, binding to receptor proteins, formation of phagosome and the digestion by hydrolytic enzymes from the lysosomes. Also looks at the difference in appearance of neutrophils, macrophages and lymphocytes.
AS Biology - Mutation
มุมมอง 5502 ปีที่แล้ว
AS Biology, Genetics Topic - Mutation. Explanation of how changes to DNA can affect the primary structure. Includes insertion and deletion mutations and an explanation of frame shift. And the three different substitution mutations - non-sense mutation, mis-sense mutation and silent mutation
AS Biology - Translation
มุมมอง 8792 ปีที่แล้ว
AS Biology, Genetics Topic - Translation. Explanation the second part of protein synthesis. Amino acid activation, structure of transfer RNA (tRNA) and how the tRNA bring amino acids to the ribosome to form a polypeptide chain.
AS Biology - Transcription
มุมมอง 1K2 ปีที่แล้ว
AS Biology, Genetics Topic - Transcription. Explanation the first part of protein synthesis, breaking it down into stages of initiation, elongation and termination.
A2 Biology - Muscle Structure (Actin and Myosin)
มุมมอง 2.1K2 ปีที่แล้ว
A2 Biology - Coordination topic. Description of the structure of striated muscle, including the sarcolemma and multinucleate nature. Composition of myofibrils with myosin and actin filaments. Comparison of relaxed and contracted myofibrils, comparing lengths of sarcomere, H-zone, A-Band and I-Band.
A2 Biology - Microarrays
มุมมอง 4.9K2 ปีที่แล้ว
A2 Biology - Genetic Technology topic. Description of how microarrays can be used to compare gene expression and is used in genmoe analysis. Covers use of fluorescent tags, hybridisation, use of reverse transcriptase to produce cDNA.
AS Biology - Translocation
มุมมอง 1.7K2 ปีที่แล้ว
AS Biology, Plant transport Topic - Translocation. Explanation of sources and sinks and how assimilates move by mass flow through the phloem. Includes details of active loading in the companion cell, using proton pumps and cotransporters.
AS Biology - The genetic code
มุมมอง 7K2 ปีที่แล้ว
AS Biology, Genetics Topic - The genetic code. Explanation of how codons of mRNA code for specific amino acids, using a non-overlapping, degenerate code.
AS Biology - DNA replication
มุมมอง 3.4K2 ปีที่แล้ว
AS Biology - Cell Division topic. Description of DNA replication, including the role of DNA helicase, DNA polymerase and DNA ligase (to join okasaki fragments).
AS Biology - Nucleic acids (The structure of DNA and RNA)
มุมมอง 5442 ปีที่แล้ว
AS Biology - Cell Division topic. Description of the structure of nucleotides, including ATP, base paring rules and formation of nucleic acids.
AS Biology - Genetic technology and transferring genes
มุมมอง 1.6K2 ปีที่แล้ว
AS Biology - Genetic Technology topic. Overview of gene transfer and details about obtaining genes. Synthesis using free nucleotides, reverse transcription and use of restriction endonuclease enzymes. Details of using sticky ends to insert DNA into a plasmid and obtain recombinant DNA.
A2 Biology - DNA and evolutionary relationships
มุมมอง 1.6K2 ปีที่แล้ว
A2 Biology - DNA and evolutionary relationships
AS Biology - The Cell Cycle and Mitosis
มุมมอง 6872 ปีที่แล้ว
AS Biology - The Cell Cycle and Mitosis
AS Biology - The role of mitosis in stem cells and cancer
มุมมอง 9402 ปีที่แล้ว
AS Biology - The role of mitosis in stem cells and cancer
A2 Biology - Inbreeding and hybridisation
มุมมอง 6K2 ปีที่แล้ว
A2 Biology - Inbreeding and hybridisation
AS Biology - The Michaelis-Menten Constant (Km)
มุมมอง 60K2 ปีที่แล้ว
AS Biology - The Michaelis-Menten Constant (Km)
AS Biology - Evolution topic. Hardy-Weinberg Equilibrium
มุมมอง 1K3 ปีที่แล้ว
AS Biology - Evolution topic. Hardy-Weinberg Equilibrium
AS Biology. Factors that affect enzyme activity
มุมมอง 6983 ปีที่แล้ว
AS Biology. Factors that affect enzyme activity
AS Biology - Cells Topic. Osmosis and the effect on animal and plant cells
มุมมอง 7713 ปีที่แล้ว
AS Biology - Cells Topic. Osmosis and the effect on animal and plant cells
AS Biology - Active transport, Endocytosis and Exocytosis
มุมมอง 1.1K3 ปีที่แล้ว
AS Biology - Active transport, Endocytosis and Exocytosis
A2 Biology - Natural Selection (selection pressures)
มุมมอง 2.7K3 ปีที่แล้ว
A2 Biology - Natural Selection (selection pressures)
Wow 🎉🎉🎉well explained
Thank You Ma'am. This is really helpful.
Thank you, it was really useful ❤️
Thank you so much❤❤❤❤
lovely explanation thank you very much!
Thank you so much!
super high yield , thanks!
this was such a good video, i couldnt find one that simplified it enough to make it understandable but still kept the keywords. This was perfectly explained and i get it now. Thank you so so so much!
Hello.. Are you going to share a vid about forensic science?
I don’t know how to thank you enough!
Life saver, Absolutely!
I appreciate your hard work.. thanks
Wow
I went through all my resources and still couldn’t understand the concept.Thanks to you,i understood the entire procedure within 12 minutes.May god bless you❤️!
Amazing!
Good teacher. Thamks 😊
The space in which water pass through in apoplast is called
❤❤🙏🏼
Brill,
Appreciated your efforts ❤️🔥❤️🔥
lovely and explicit.. thanks
Short, simple and clear..all in one thxxx alott
Thank you for your effortttt❤❤❤❤
Thank you sooooooooooooooooooo much ❤❤❤❤
Thank you so much ❤❤
Mam you r amazing better than the ssc II book b/c you made it clear the 2 pathway of watwr and how does its importance.
thank you very helpful, can you do this to save a variety of corn? keep growing inbreed lines while also growing the f1 hybrid, then inbreed the new f1 line ?
Thank you this helped a lot 😊
BEST EXPLANATION SO FARRR
I've watched dozens of videos but all of them pale in comparison to yours Thank you 💛✨️
i know im late but i love your way of explaining. thank you!!
Please more topic for related to mdcat
Good job ❤
Haha short and sweet. I LOVED that you explained dominant vs recessive genes in terms of the functional vs non-functional enzymes they encode. This was never clear to me in my high school biology classes and it didn't seem obvious to my professors either "what makes a gene dominant or recessive?". Of course, other mechanisms could be involved but I'm glad you indeed kept it short and simple. Thanks!
Hello ma'am, Thank you for this great video and being so kind to the students by explaining everything so beautifully. QUERY- At 5.45, you said that water enters the root through diffusion. This has confused me as in the texts we follow, it says that water enters the root through osmosis. Request you to please clear this doubt. Thank you.
it is a shame this isn't what comes up first when looking for A Level B biology stuff because this channel is so underrated compared to other bio a level channels, especially for visual learners, the fact you draw everything out instead of using static images really really helps, thank you so much.
You are a great teacher 🫶🏼🫶🏼
u are a life saver
educative and informative love it ❤
Omg I can’t tell how much this helped! Thank you!!
amazing video, thank you ! I have a question though, how can abscisic acid can open and close the stomata ? like its the same chemical but has 2 different effects. do we simply choose which one would occur based on the information given ? (Ex if hot and dry climate then say it closes etc)
This deserves more likes and views, thank you so much.
Best explanation EVER!
thank you so much this was explained really well
thank youuuuu
What does km stand for
It stands for Michaelis-mentem
What does km stand for
It stands for Michaelis-mentem. You aren't required to know that though
kilometer
I'm so grateful for this video, I just wished I'd have found your channel before - my exam is tomorrow 😅
Is this the complete chapter I feel like 2 videos are two less
You are a life saver 💗