Quadratic Functions & Graphs What are the key features of quadratic graphs? The value of?a?affects the shape of the curve If?a?is?positive?the shape is?concave up?∪ If?a?is?negative?the shape i...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 3.1.4 Asexual Reproduction in Plants Asexual Reproduction in Plants Plants can reproduce?asexually?as well as?sexually Asexual reproduction only?involves?one p...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 3.1.3 Practical: Conditions for Germination Practical: Conditions for Germination Germination?is the?start of growth in the seed Three factors are required for...
Equations of a Straight Line How do I find the gradient of a straight line? Find two points that the line passes through with coordinates (x1, y1) and?(x2, y2) The gradient between these two points...
Edexcel IGCSE Biology 復(fù)習(xí)筆記 3.1.2 Sexual Reproduction in Flowering Plants Pollination Flowers are the?reproductive organs?of plants They usually contain both male and female reproductive ...
Edexcel IGCSE Biology 復(fù)習(xí)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(fù)習(xí)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(fù)習(xí)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...
