2022 DC全球钻石商业挑战赛9月即将开始报名，快来找你的队友吧！
Diamond Challenge全球钻石商业挑战赛，是由美国特拉华大学主办的面向高中生的国际顶尖创业赛事。不同于其他学术活动，钻石挑战赛专注于释放学生的创造力，鼓励多样新颖的想法，培养学生的策划能力、沟通能力、决...
IB DP Biology: SL复习笔记1.4.2 Phases of Mitosis
Phases of Mitosis Mitosis is the process of nuclear division by which two genetically identical daughter nuclei are produced that are also genetically identical to the parent cell nucleus (they hav...
IB DP Biology: SL复习笔记1.4.1 Cell Cycle
Interphase Mitosis is part of a precisely controlled process known as the cell cycle The cell cycle is the regulated sequence of events that occurs between one cell division and the next The cell c...
IB DP Biology: SL复习笔记1.3.7 Skills: Estimation of Osmolarity
Practical 2: Estimation of Osmolarity NOS: Experimental design; accurate quantitative measurements in osmosis experiments are essential Planning is an essential part of experimental biology, it wil...
2022年北京公立学校国际部招生信息汇总！
已经进入8月，相信家长和学生们也开始考虑规划明年的择校。现在带大家回顾一下2022年21所公办校国际部的招生名额、学费、加试分数线相关信息，供大家参考。 招生信息汇总目录 北师大附属实验中学国际部 北京四中...
IB DP Biology: SL复习笔记1.3.6 Skills: Membrane Structure & Transport
Drawing the Fluid Mosaic Model Membranes Membranes are vital structures found in all cells The cell surface membrane creates an enclosed space separating the internal cell environment from the exte...
IB DP Biology: SL复习笔记1.3.5 Active Transport & Bulk Transport
Active Transport Active transport is the movement of molecules and ions through a cell membrane from a region of lower concentration to a region of higher concentration using energy from respiratio...
IB DP Biology: SL复习笔记1.3.4 Membrane Transport
Passive Transport Simple diffusion Simple diffusion is a type of transportation that involves particles passing between phospholipids in the plasma membrane It can be defined as: The net movement, ...
IB DP Biology: SL复习笔记1.3.3 History of Fluid Mosaic Model
History of Fluid Mosaic Model NOS: Using models as representations of the real world; there are alternative models of membrane structure Scientists use models to represent real world ideas, organis...
IB DP Biology: SL复习笔记1.3.2 Membrane Proteins
Membrane Proteins The phospholipid bilayer carries out the main function of the plasma membrane - to control the movement of substances into and out of the cell The other functions are carried out ...
IB DP Biology: SL复习笔记1.3.1 Phospholipid Bilayer Properties
Amphipathic Properties Phospholipids Phospholipids form the basic structure of the membrane (the phospholipid bilayer) They are formed by a hydrophilic phosphate head bonding with two hydrophobic h...
IB DP Biology: SL复习笔记1.2.8 Skills: Drawing Cells
Drawing Cells Drawing the ultrastructure of cells To record the observations seen under the microscope (or from photomicrographs taken) a labelled biological drawing is often made Biological drawin...
