AQA Combined Science Trilogy Biology Paper 1 Revision and 2019 Exam Support

I am sorry if you feel there is an error in the analysis of the 2018 exam questions.<br /> The question you have raised, 1.5, was also raised by another buyer and I have given a detailed response to this if you see my replying comments from this.<br /> But, in summary, question 1.5 from the official AQA mark scheme quotes question 1.5 as reviewing spec point 1.1.1.2. This I believe refers to the theme of the whole question as well, where it links to the skills required to complete the linked required practical to this spec point. Required practical 1.<br /> Although the formula is mentioned in spec point 4.1.1.5, the main theme of this spec point is about the advances and comparisons of light microscopes versus electron microscopes.<br /> <br /> I hope that this helps answer your concern with the resource.<br /> <br /> WHAM_Education<br />

Looking back at the question paper and the markscheme, question one assesses spec points 4.1.1.1 once and 4.1.1.2 five times. The question asks more about types of cell in question 1.1 and then leads into the structure of cells and then how to use a light microscope which links into required practical 1, which is part of spec point 4.1.1.2. The final part of the question, 1.5, does ask about magnification but the mark schemes still links this to spec point 4.1.1.2, as this skill would be required to complete scales of the cells made from the slides.<br /> The spec point in question, 4.1.1.5: Microscopy, is more about the comparison between light microscopes and electron microscopes and the advancements over time, which was not part of this question.<br /> <br /> “Students should be able to:<br /> • understand how microscopy techniques have developed over time<br /> • explain how electron microscopy has increased understanding of sub-cellular structures.<br /> <br /> Limited to the differences in magnification and resolution.<br /> <br /> An electron microscope has much higher magnification and resolving power than a light microscope. This means that it can be used to study cells in much finer detail. This has enabled biologists to see and understand many more sub-cellular structures.”<br /> <br /> It does include that they are required to use the magnification formula in this spec point but I assume this is just reinforcing knowledge from the required practical.<br /> <br /> The issue I faced when putting together the assessment resources is that there is limited material on light microscopes vs electron microscopes from the AQA bank of questions. I have therefore tried to include questions as linked to this to review as much of the linked spec points as possible.<br /> <br /> Only one question even mentions the use of an electron microscope. I have added this resource to the question pack so you should be able to download this additional support.<br /> <br /> When I taught this I had to use a lot of comparison tables from a variety of sources. I have included one on the resource. <br /> I believe if this was to come up, it may be themed more like a 6 mark comparison question. <br /> <br /> I hope this feedback and the additional tasks helps.<br /> <br /> WHAM_Education<br />