Module 1 - Development of Practical Skills in Biology expand_content

Module 2 - Foundations in Biology expand_content

Module 3 - Exchange & Transport expand_content

Module 4 - Biodiversity, Evolution & Disease expand_content

Module 5 - Communication, Homeostasis & Energy expand_content

Module 6 - Genetics, Evolution & Ecosystems expand_content

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REQUIRED PRACTICALS

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Variables

Independant Variable - The variable that gets changed

Dependant Variable - The variable that is measured

Control Variable - The variables that are kept the same throughout the experiment

Reinforce your knowledge on variables here open_in_new - Digital Flashcards, A Quiz, An AI chatbot teacher & quizzer, A matching game, + more.

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Equations to Learn

$\mathrm{Circumference}=2\times \pi \times \mathrm{radius}$

$\mathrm{Area\; of\; Circle}=\pi \times \mathrm{radius}2$

$\mathrm{Surface\; Area\; of\; Cuboid}=2((\mathrm{base}\times \mathrm{height})+(\mathrm{base}\times \mathrm{length})+(\mathrm{height}\times \mathrm{length}))$

$\mathrm{Volume\; of\; Cuboid}=\mathrm{height}\times \mathrm{base}\times \mathrm{length}$

$\mathrm{Mean}=\frac{\mathrm{Sum\; of\; terms}}{\mathrm{Number\; of\; terms}}$

$\mathrm{Percentage\; Change}=\frac{\mathrm{new\; quantity\; -\; original\; quantity}}{\mathrm{original\; quantity}}\times \mathrm{100}$

$\mathrm{Percentage\; Yield}=\frac{\mathrm{Actual\; amount}}{\mathrm{Theoretical\; amount}}\times \mathrm{100}$

$\mathrm{Percentage\; Uncertainty}=\frac{\mathrm{2\; \times \; absolute\; uncertainty}}{\mathrm{quantity\; measured}}\times \mathrm{100}$

$\mathrm{Magnification}=\frac{\mathrm{size\; of\; image}}{\mathrm{size\; of\; real\; object}}$

$\mathrm{Rf\; Value}=\frac{\mathrm{distance\; moved\; by\; solute}}{\mathrm{distance\; moved\; by\; the\; solvent}}$

$\mathrm{Rate}=\frac{\mathrm{change\; in\; quantity}}{\mathrm{time\; taken}}$

$\mathrm{Surface\; Area\; to\; Volume\; Ratio}=\frac{\mathrm{Surface\; Area}}{\mathrm{Volume}}$

$\mathrm{Proportion\; of\; polymorphic\; gene\; loci}=\frac{\mathrm{number\; of\; polymorphic\; gene\; loci}}{\mathrm{total\; number\; of\; loci}}$

$\mathrm{Cardiac\; output}=\mathrm{heart\; rate}\times \mathrm{stroke\; volume}$

$\mathrm{Respiratory\; quotient}=\frac{\mathrm{CO2\; produced}}{\mathrm{O2\; consumed}}$

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Biology Past Papers

Biology Paper 1 June 2022 open_in_new Mark Scheme open_in_newInsert open_in_new

Biology Paper 2 June 2022 open_in_new Mark Scheme open_in_new

Biology Paper 3 June 2022 open_in_new Mark Scheme open_in_new

Biology Paper 1 October 2021 open_in_new Mark Scheme open_in_newInsert open_in_new

Biology Paper 2 October 2021 open_in_new Mark Scheme open_in_new

Biology Paper 3 October 2021 open_in_new Mark Scheme open_in_new

Biology Paper 1 October 2020 open_in_new Mark Scheme open_in_new

Biology Paper 2 October 2020 open_in_new Mark Scheme open_in_new

Biology Paper 3 October 2020 open_in_new Mark Scheme open_in_new

Biology Paper 1 June 2019 open_in_new Mark Scheme open_in_new

Biology Paper 2 June 2019 open_in_new Mark Scheme open_in_new

Biology Paper 3 June 2019 open_in_new Mark Scheme open_in_new

Biology Paper 1 June 2018 open_in_new Mark Scheme open_in_newInsert open_in_new

Biology Paper 2 June 2018 open_in_new Mark Scheme open_in_newInsert open_in_new

Biology Paper 3 June 2018 open_in_new Mark Scheme open_in_new