Love the video! Just with the practice questions some of them are on topics that aren’t assessed so to everyone make sure to look at advanced info for this year as well!
I have this exam for my birthday 😭 what an amazing gift. Could be a worse exam to have though. Feeling pretty good for paper 2 though! Good luck everyone
1) Bacteria Fungi 4) Meoisis genetically different offspring whereas mitosis is identically the same. Meiosis There is variation in the offspring. Mitosis there isnt. Meiosis has two parents whereas mitosis only has one.
@@ethannhuntt meiosis has 2 parent cells because it’s coming from both the male and female (sperm + egg) whereas mitosis has 1 parent cell since it’s clones ~ hope this answered your question :)
@@justchillin566 i think instead you would say that it enables two parents to reproduce- meiosis still starts with one parent cell with a diploid set of chromosomes (i'm talking about the actual cell division, not sexual reproduction)
1q ) Fungi and bacteria 2) not accessed on Aqa 3) not accessed 4) mitosis is for replacement of dead cells where as meiosis is for reproduction Mitosis forms genetically identical copies where as meiosis form genetically different copies Mitosis form 2 copies . Meiosis forms 4 copies
only two tips Q4) try not to mention ‘copies’, instead say ‘daughter cells’, Q5) mention the A T C G bases and the complimentary pairs i’m sure u know that tho, good luck! :)
plan on revising the main focus but also the older topics that are low tarriffs so i don’t loose easy marks. gonna do you blurting diagrams for the required practicals and fo last paper questions. gonna practice my 6 and 4 marker timing as well. currently watching your video on my way home. doing a 5 hour revision session before bed .
You're so encouraging! I'm worried about science exams, since biology is the only subgject that will pull my grade (I totally failed physics and chemistry). Thank you for the tips^^
My gosh Jaden, just coming back to tell you: Your practice questions made me look up biodiversity last night and it really did come straight up in my 2BR today😭😭 thanku
1) fungi and bacteria cause decay 2) frontal lobe is the part of the brain that makes decisions 3) long-sighted people have difficulty seeing objects as their occipital lobe has been damaged? (not sure if this even answered the question) 4) mitosis has 1 parent cell, mitosis is asexual, meiosis occurs in plants and humans only 5) haven’t leant this yet 6) not sure why more land is being used, but farming has decreased biodiversity because of all the deforestation that’s happened to make land for the farm(ing to happen)
Nice answers! Here is the markscheme for Q6 Human Land Use • increasing population requires more food • crops / livestock for food • farming crops for biofuels • peat use as compost • peat use as fuel • increased use of pesticide / insecticide / herbicide / fertilisers • use of free-range / organic methods increases land use (for same yield) Link to Biodiversity • deforestation • monocultures • loss of hedgerows (to make fields larger) • loss of habitat • consequence of loss of habitat eg (change in) migration • fertiliser run off polluting water • use of pesticide / insecticide / herbicide reduces insects / plants which damages food chains • more soil erosion Link to Atmospheric Pollution • more carbon dioxide (from farm animals / machinery) • more methane (from cows) • climate change or global warming • example of impact on biodiversity • acid rain • desertification
1. Bacteria and Fungi 2. Cerebral Cortex 3.The eyeball is too short so light focuses behind the retina. 4. Meiosis involves 2 cell divisions. 4 genetically different daughter cells are produced rather than 2 identical ones. No genetic variation in mitosis. 5. A nucleotide is made up of a base binded to a sugar and phosphate. Attraction between the bases keeps the structure together. 6. More land is being used for farming to increase food production in order to meet the rising demand. Farms are being expanded to increase their output and increasing land results in the loss of natural habitats and ecosystems which reduces the range of different populations in the area. Not sure about question 5 and 6. I know 2,3 aren't coming up, but I don't trust the advanced information anymore...
A nucleotide is a mono more that holds phosphate groups, 5 carbon sugar and nitrogenous bases. 4 nitrogenous bases in dna are adenine, guanine, thymine, cystosine. In rna the thymine is replaced with a uracil base. This is what makes up living things.
question 4: 3 differences between mitosis and meiosis mitosis is asexual reproduction meiosis is sexual reproduction mitosis produced 2 identical daughter cells (haploid) meiosis produces 4 daughter cells (diploid) mitosis are genetically identical?? only question i can answer 😃
I believe for the 3rd point afterdna replicates in mitosis and meiosis Mitosis are generically identical whereas meiosis the gametes are genetically different.
Oh and also Mitosis produces 2 daughter cells but meiosis 4.mitosis produces cells that genetically dentical to the mother cell but in meiosis it produces cells with genetic variation. Mitosis produces diploid nucleus cells but meiosis haploid.
Hi, thank you for the video, it was really helpful! I have a question: what happens if you do badly in paper 1 but you do better in paper 2? Could I get like a 5/6 as my first grade but 8/9 as my second? (I do combined) thanks!
mitosis is were 2 identical daughter cells split and its apart of the asexual reproduction as miosis is where it splits into 4 daughter cells which start from the parent cells which are non identical
6:09 The easiest question by far. More land is being used for farming because more people are being born, increasing the population and therefore, increasing more food demands. Another way more land is being used for farming because more and more people are eating more, which also increases food demands. And in return, this decreased biodiversity because we have to chop down more trees for room to farm, and in the process, it destroyed habitats for many animals and killing them in the process, making it less diverse.
6:58 One difference between Mitosis And Meosis is that Mitosis only do sex cells whist Meosis does the rest of the body. Another difference is that Mitosis will produce two daughter cells which are the same whist Meosis produce different cells. And finally, Meosis happens more often then Mitosis.
More land is being used for farming due to the constant growing farming industry with lots more space needed to provide livestock and plants with space to grow. Additional space is achieved using methods such as deforestation, this leads to destruction/loss of habitat and perhaps resulting in death/decrease of a species that is reliant on the ecosystem that has been destroyed for more space. This is significant because not only does it decrease the population of a species reliant on the ecosystem- but also affects the species that depend on other animals as a food source. If enough animals die due to loss of habitat, this may result in depletion of food sources for even tertiary predators- further reducing biodiversity. ??
Hey Jaden. Sorry this isn't related to this vidoe but I have a question about studying dentistry. Do you think doing combined science rather than triple will make it harder to do anything medicine related?
if you want to do dentistry is there a reason you don’t want to do triple? if that’s your goal i can’t see why doing different subjects would take priority if they’re not what you wanna go into
@@pepsimann2038 nah man i didn't know what i wanted to do so i didn't pick triple. i tried swapping this year but i'm in year 11 and my teachers said its too late. anyways almost done with gcse's and i already picked the a levels I want just wanted to know if not doing triple would restrict me from things.
It doesn't really matter what you take for GCSEs as long as you can do atleast 1/2 sciences at A-level or another alternative exam. Most dentistry universities actually require chemistry but some require others such as biology so make sure to check this out on uni course requirements when selecting your subjects!
1) bacteria and fungi 2) not in advance info 3) not in advance info 4) - mitosis involves one cell division whereas meiosis involves two -mitosis produces genetically identical cells whereas meiosis produces genetically varied cells -cells produced by mitosis have a diploid set of chromosomes whereas cells produced by meiosis have a haploid set of chromosomes
5) contains a base of either A,T,C or G- A pairs to T, C pairs to G. Attached to a deoxyribose sugar, and a phosphate group which forms part of the DNA's double helix backbone.
1. Bacteria and fungi 2. (I'm combined so i dont think i should know this) 3. ^^ 4. Mitosis results in two daughter cells being made whereas meiosis results in 4 daughter cells Mitosis' daughter cells are identical whereas meiosis' cells are different Mitosis is an example of asexual reproduction (one parent. Usually involved in some animals or skin repair and growth) whereas meiosis is sexual reproduction so has 2 parents. 5.(combined) Rest i cant answer as im not triple
It's good but hard work. There is a lot of content and for us it is very science based in year 1 with not as much practical work as you would think. It is already quite interesting but I'm sure it will be better as we see patients as early as Year 2!
1) bacteria, fungus 4)mitosis uses asexual reproduction whereas meiosis used sexual reproduction meiosis replicates into 4 daughter cells whereas mitosis replicates into 2 identical daughter cells 6) More land is being used for farming because there is an increase in demand for crops. this leads to more space used up Increased farming reduces biodiversity as it destroys the the different species due to destruction of their habitats in hope for gaining land to farm.
Then I would suggest doing practice questions on all the required practicals and making sure you understand them all! If you look over on physics and maths tutor, I remember that they had a lot of practice questions for practicals. You can also watch videos on practicals on youtube so be sure to use whatever is available to you!
if youre struggling with practicals, go to free science lessons and cover the 2 required practical that are on the exam board website on the advanced info page. As you watch the vid make notes about how you do the experiments and the results. After do some practise questions in it, form physics math tutor or even save my exams.
if you're struggling to understand a practical, look up a video of someone doing it and then try to draw it out on a scrap paper - also physics and maths tutor has the control variables you need to know and the risks, so i'd recommend learning those for each practical as usually a question could ask 'describe 2 things that the student should keep the same' or something like that - good luck, hope this helps! (btw i am doing edexcel GCSE and i know pearson make youtube videos on each practical so check the exam boards youtube)
Um I’m sorry but what curriculum is this? I’m studying for my igcse Pearson edexcel exams and I have the exam tmr 😭😭 plzzzz give me advice anybody istg
for the 6 marker i have 3 points for decreasing biodiversity -fish farming -deforestation - monocrops but for reasons why more land is being used i can only think of one point -increased population size dose anyone has 2 more points i can use????
Here is the markscheme! Human Land Use • increasing population requires more food • crops / livestock for food • farming crops for biofuels • peat use as compost • peat use as fuel • increased use of pesticide / insecticide / herbicide / fertilisers • use of free-range / organic methods increases land use (for same yield) Link to Biodiversity • deforestation • monocultures • loss of hedgerows (to make fields larger) • loss of habitat • consequence of loss of habitat eg (change in) migration • fertiliser run off polluting water • use of pesticide / insecticide / herbicide reduces insects / plants which damages food chains • more soil erosion Link to Atmospheric Pollution • more carbon dioxide (from farm animals / machinery) • more methane (from cows) • climate change or global warming • example of impact on biodiversity • acid rain • desertification
Im kinda sad they took out ALL of evolution and variation and the development of genes…that was quite an interesting part of biology and it’ll be hard in a-level im guessing😩
Just try to remember the practicals (especially the one with the quadrats) and also make sure you try to remember most of the content ( I would recommend freesciencelessons or primrosekitten, but ima be fr freesciencelessons is better). I got a grade 9 in my paper 2 mocks by doing this the day before
