Edexcel IGCSE Maths 复习笔记 4.6.1 Circle Theorems - Angles at Centre & Circumference What are circle theorems? You will have learned a lot of angle facts for your GCSE – angles in polygons, an...
Edexcel IGCSE Maths 复习笔记 4.5.1 Loci & Construction What are loci and constructions? A locus (loci is plural) is a line/shape/path that is determined by following a rule – eg. always being 2...
Edexcel IGCSE Maths 复习笔记 4.4.2 Speed, Density & Pressure - Harder What are speed, density and pressure? Speed, density and pressure are compound measures – they are made from other measures...
Non-Coding DNA The genome within eukaryotic cells contains many non-coding sections of DNA Non-coding DNA does not code for any amino acids Non-coding DNA can be found between genes, ...
6月14日，全英三大权威排名之一的完全大学指南CUG（Complete University Guide）发布了2023年英国大学排名榜单！作为专注于本土大学的英国榜单，此次排名共有130所大学上榜，涵盖了74个专业领域。 2023CUG排名亮...
全国青少年科技创新大赛，是“青少年世界杯”国际科学与工程大奖赛ISEF的中国附属赛之一，它也是在三大中国附属赛中，赛制与ISEF最接近的赛事。 不仅如此，全国青少年科技创新大赛还是教育部认可的全国科创赛事活动...
Edexcel IGCSE Maths 复习笔记 4.4.1 Speed, Density & Pressure What connects speed, density & pressure? Speed, density and pressure are all examples of variables which are calculated by divid...
Edexcel IGCSE Maths 复习笔记 4.3.1 Bearings & Scale What are bearings? Bearings (sometimes referred to as three-figure bearings) are a way of describing and using angles The way they are define...
The Triplet Code A gene is a sequence of nucleotide bases in a DNA molecule that codes for the production of a specific sequence of amino acids, that in turn make up a specific polypeptide (...
Genetic Loci Genes, loci and alleles The DNA contained within chromosomes is essential for cell survival Every chromosome consists of a long DNA molecule that codes for several different pro...
The Definition of a Gene A gene is a base sequence of DNA that codes for the amino acid sequence of a polypeptide or a functional RNA molecule Functional RNA molecules are required for prote...
Mitochondria & Chloroplast DNA Mitochondria A single mitochondrion is shown – the inner membrane has protein complexes vital for the later stages of aerobic respiration embedded within i...
