Edexcel IGCSE Biology 復習筆記 3.1.1 Types of Reproduction Sexual Reproduction Sexual reproduction is: The process involving the fusion of the nuclei of two?gametes?to form a?zygote?(...
How can I write a system of linear equations? To save space we can just write the?coefficients?without the variables What?is a row reduced system of linear equations? A system of linear equations i...
Edexcel IGCSE Biology 復習筆記 2.10.13 The Role of Hormones: Advanced The Role of Hormones: Advanced As well as adrenaline, insulin, testosterone, progesterone and oestrogen, the following h...
Edexcel IGCSE Biology 復習筆記 2.10.12 The Role of Hormones The Role of Hormones: Basic A?hormone?is a chemical substance produced by a?gland?and?carried by the blood, which alters the activ...
What are systems of linear equations? A linear equation is an equation of the first order (degree 1) This means that the?maximum degree?of each term is 1 These are examples of linear equations: 2x?...
Edexcel IGCSE Biology 復習筆記 2.10.11 The Endocrine System The Endocrine System Information is sent through the endocrine (hormonal) system as?chemical substances?known as?hormones Hormones...
The Kelvin Scale & Absolute Zero On the thermodynamic (Kelvin) temperature scale, absolute zero is defined as: The lowest temperature possible. Equal to 0 K or -273.15 °C It is not possi...
How do I find the square root of a complex number? The square roots of a complex number will themselves be complex: How do I use de Moivre’s Theorem to find roots of a complex number? De Moivre’s T...
Latent Heat Capacity Energy is required to change the?state?of a substance Examples of changes of state are: Melting?= solid to liquid Evaporation?/?vaporisation?/?boiling?= liquid to gas Su...