How to get full marks on 5 markers in A-level biology | Tips on how to answer long answer questions
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Күн бұрынHey there! In this video, I'll be sharing with you my top tips on how to get full marks on 5 markers in A-level biology. I know that these types of questions can be a bit scary, but don't worry, I'm here to help you with your Biology revision!
Throughout the video, I'll be showing you step-by-step how to approach these questions, using real exam questions as examples. You'll learn how to identify key phrases, structure your answers effectively, and present your ideas in a clear and concise manner.
By the end of the video, you'll feel more confident and better prepared for your Biology exams. So grab a pen and paper, and let's dive in together! And if you find this video helpful, don't forget to give it a thumbs up and subscribe for more useful tips on A-level biology.
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@cbeyaz23 Жыл бұрын
One thing I remember you saying in one your videos was to use bullet points and honestly, such a life saver! thankyou so much miss
@MissEstruchBiology Жыл бұрын
I'm so pleased!!! That is such a time saving strategy and improves quality of answer, more concise!
@kazishahjalal6852 Жыл бұрын
This channel is so underrated!!! I will surely recommend your channel to my peers. Keep up the great work please!!!
@MissEstruchBiology Жыл бұрын
Thank you so much and I'm so pleased it's helping you 😊
@ol3273 Жыл бұрын
Hi Miss, thank you for your tips! Is it possible if you could go over "preparing a coherent and well-written essay", on tips on linking and connecting ideas/paragraphs in the biological essay as well as knowing what counts as waffle and what doesn't count as waffle in your explanations as these are the main killers of the biological essay? Thank you.
@MissEstruchBiology Жыл бұрын
hey I have 3 or 4 essay videos uploaded so definitely check those out for this advice
@zion9146 Жыл бұрын
Hi ms what are the common and important command words /question types to know ones like evaluate and suggest
@MissEstruchBiology Жыл бұрын
Hey you can find the whole list here www.aqa.org.uk/resources/science/as-and-a-level/biology-7401-7402/teach/command-words
@Masowe. Жыл бұрын
i think these questions are great if you have knowledge but if you don't know what they are talking about they are the worst
@MissEstruchBiology Жыл бұрын
Yeah, got to have solid knowledge
@medicusv61 Жыл бұрын
My own Model Answers: 1. Transmission electron microscopes work by using a high energy electron beam, focusing this onto the sample, using electromagnets. Denser areas of the specimen will absorb more electrons, appearing darker on the image. Optical microscopes work by using light to view an image, focusing it using a glass lens, they have a shorter wavelength and so optical microscopes have a lower resolution than TEMs because of this. Limitations to a transmission electron microscope is that although it has a high resolution and can view the internal structures of a cell (such as mitochondria, ribosomes, endoplasmic reticulum) it cannot view living specimens as the sample must be viewed in a vacuum. A vacuum is needed to remove air, as air can absorb electrons and distort the image. TEMs can only observe 2D monochromatic images,and they have a complex staining process in which can increase the likelihood of artifacts being produced. Limitations to a optical microscope is that is has a lower resolution due to the longer wavelength and so cannot view all the internal structures of organelles in a cell. Although it can view living specimens and it can view them in colour. 2. DNA is made up of monomers called nucleotides. They are made from a deoxyribose sugar, a phosphate group and a nitrogenous base (either adenine, guanine, cytosine or thymine). These nucleotides form phosphodiester bonds through condensation reactions between the deoxyribose pentose sugar and a phosphate group on another nucleotide. The polymer form of DNA is coiled into a double helix consisting of two separate and complementary strands. Between the strands there is complementary base pairing through hydrogen bonding. Adenine bonds to thymine with 2 hydrogen bonds, cytosine to guanine with 3 hydrogen bonds. The phoshodiester bonds formed between the nucleotides create a phosphodiester backbone which holds the DNA nucleotides together. These strands of DNA are wound around proteins called histones in eukaryotic organisms that condense to create chromosomes.
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