IB DP Biology: HL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: HL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...
IB DP Biology: HL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: HL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: HL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: HL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: HL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: HL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: HL复习笔记1.2.9 Skills: Cell Origin & Ultrastructure
Interpreting Electron Micrographs Identify whether it is a prokaryotic or eukaryotic cell - is a nucleus present Identify which eukaryotic cell it is (plant or animal) by looking for a cell wall or...
