2022年AMC10/12线上居家考试安排！
AMC全称American Mathematical Competition即美国数学学术活动，等级划分为AMC8、AMC10、AMC12、AIME、USA(J)MO等，全球每年参加比赛的学生高达60万人次。学术活动针对不同年龄段的学生分为三类： AMC 8（针对8年...
Edexcel A (SNAB) A Level Biology:复习笔记5.2.6 Products of Photosynthesis
Products of Photosynthesis Intermediate molecules of the Calvin cycle such as glycerate 3-phosphate (GP) and glyceraldehyde 3-phosphate (GALP) are used to produce other biological molecules needed ...
Edexcel A (SNAB) A Level Biology:复习笔记5.2.5 Light-independent Reactions
Light-independent Reactions The light-independent reactions of photosynthesis are sometimes referred to as the Calvin cycle The reactions produce complex organic molecules such as Starch for storag...
Edexcel A (SNAB) A Level Biology:复习笔记5.2.4 Light-dependent Reactions
Light-dependent Reactions Photosynthesis takes place in two distinct stages The light-dependent reactions, which rely on light directly The light-independent reactions, which do not use light direc...
Edexcel A (SNAB) A Level Biology:复习笔记5.2.3 Chloroplasts: Structure & Function
Chloroplasts: Structure & Function Chloroplasts are the organelles in plant cells where photosynthesis occurs Each chloroplast is surrounded by a double-membrane known as the chloroplast envelo...
Edexcel A (SNAB) A Level Biology:复习笔记5.2.2 ATP as a Supply of Energy
ATP as a Supply of Energy All organisms require a constant supply of energy to maintain their cells and stay alive This energy is required e.g. For building new molecules from the products of diges...
Edexcel A (SNAB) A Level Biology:复习笔记5.2.1 Photosynthesis: An Overview
Photosynthesis: An Overview Photosynthesis is a series of chemical reactions that occurs in producers such as plants and algae Photosynthesis converts light energy into chemical energy which is the...
Edexcel A (SNAB) A Level Biology:复习笔记5.1.7 Calculating the Efficiency of Biomass & Energy Transfers
Calculating the Efficiency of Biomass & Energy Transfers Transfer of energy through a food chain During photosynthesis organisms such as plants convert light energy into chemical energy stored ...
Edexcel A (SNAB) A Level Biology:复习笔记5.1.6 Net Primary Productivity
Net Primary Productivity During photosynthesis organisms such as plants convert light energy into chemical energy stored in biological molecules Organisms that do this are known as producers The ra...
Edexcel A (SNAB) A Level Biology:复习笔记5.1.5 Stages of Succession
Stages of Succession Ecosystems are dynamic, meaning that they are constantly changing The process of ecosystem change over time is known as succession During succession, the biotic and abiotic con...
Edexcel A (SNAB) A Level Biology:复习笔记5.1.4 Practical: Determining Distribution & Abundance
Practical: Determining Distribution & Abundance Finding out about the abundance and distribution of species can be achieved by counting all of the organisms present in a habitat This is possibl...
Edexcel A (SNAB) A Level Biology:复习笔记5.1.3 Niches: Distribution & Abundance
Niches: Distribution & Abundance The place where a species lives is known as its habitat Species will occupy a specific niche within a habitat The term niche can be defined as the role of a spe...
