IB DP Biology: HL復習筆記1.1.6 Skills: Cell Theory
Practical 1: Using a Microscope Many biological structures are too small to be seen by the naked eye Optical (light) microscopes are an invaluable tool for scientists as they allow for tissues, cel...
IB DP Biology: HL復習筆記1.1.5 Stem Cells
Stem Cells A?stem cell?is a cell that can?divide?(by mitosis) an?unlimited number of times Each new cell (produced when a stem cell divides) has the potential to?remain a stem cell?or to develop in...
IB DP Biology: HL復習筆記1.1.4 Cell Specialisation
Emergent Properties Multicellular organisms are able to undertake functions that unicellular organisms cannot, e.g. move over vast distances and digest large macromolecules Scientists sometimes sum...
IB DP Biology: HL復習筆記1.1.3 Surface Area to Volume Ratio
Surface Area to Volume Ratio Materials?constantly being?exchanged?across the?plasma membrane The?volume/mass?of cytoplasm (as this is where the reactions take place)For cells to survive, metabolic ...
IB DP Biology: HL復習筆記1.1.2 Functions of Life
Functions of Life Unicellular (single-celled) and multicellular (many cells) organisms must carry out the following functions to stay alive: Metabolism - all the enzyme-catalysed reactions occurrin...
IB DP Biology: HL復習筆記1.1.1 Cell Theory
Cell Theory Until microscopes became powerful enough to view individual cells, no-one knew for certain what living organisms were made from A scientist called?Robert Hooke?came up with the term "ce...
IB DP Maths: AI HL復習筆記5.7.2 Second Order Differential Equations
Euler's Method: Second Order How do I apply Euler’s method to second order differential equations? A?second order differential equation?is a differential equation containing one or more second deri...
IB DP Maths: AI HL復習筆記5.7.1 Coupled Differential Equations
Solving Coupled Differential Equations How do I write a system of coupled differential equations in matrix form? How do I find the exact solution for a system of coupled differential equations? Wor...
IB DP Maths: AI HL復習筆記5.6.4 Approximate Solutions to Differential Equations
Euler’s Method: First Order What is Euler’s method? Euler’s method?is a numerical method for finding approximate solutions to differential equations It treats the derivatives in the equation as bei...
