A document summarising gas exchange in plants, mammals, insects and fish from a student achieving A's in A Level biology

This is the official mark scheme for the level 2023 paper 1, i have removed all the useless information at the start so you can see from the preview that i actually have uploaded the real mark scheme :) .

Our alevels are in a month and i want to share this document with everyone that needs it for an affordable price, the mark scheme is also posted, i have posted a bundle aswell, this is the paper from the official aqa exam board will all 10.3 questions included.

1. Variables 2. Stats test 3. Relative risk calculation 4. Standard deviation 5. Units - from my old gcse cards 6. Uncertainty - basically the specs funny about this and it is different in A-Level chem - ask your teachers/see past papers 7. Percentage change calculation 8. Aseptic techniques perfect answer 9. Ratios perfect answer 10. Mean Median Mode kinda question 11. Really GOOD CARD just use that for any evaluation question, one always comes up. ...

These are my revision cards which I made and used to get and A*. They are listed by topic and cover every single point on the specification. I spent on average an hour on each card and made them over 2 years. They are the best and will help you get an A* as well! Unit 8 has 18 cards :)

These are my revision cards which I made and used to get and A*. They are listed by topic and cover every single point on the specification. I spent on average an hour on each card and made them over 2 years. They are the best and will help you get an A* as well! Unit 7 has 12 cards + 25 mini cards for those key terms :)

These are my revision cards which I made and used to get and A*. They are listed by topic and cover every single point on the specification. I spent on average an hour on each card and made them over 2 years. They are the best and will help you get an A* as well! Their are 40 cards in Unit 6. I know its a chunky topic, I feel your pain! But at least I've already made the cards so you don't have to :)

These are my revision cards which I made and used to get and A*. They are listed by topic and cover every single point on the specification. I spent on average an hour on each card and made them over 2 years. They are the best and will help you get an A* as well! This unit only has 18 cards but they are really densely packed and is naturally a shorter piece of the spec :)

These are my revision cards which I made and used to get and A*. They are listed by topic and cover every single point on the specification. I spent on average an hour on each card and made them over 2 years. They are the best and will help you get an A* as well! This Unit has 24 cards :)