IB DP Biology: SL复习笔记4.1.3 Community
Community Species do not exist by themselves in their own isolated environment; they interact with other species, forming communities A community can be defined as: Multiple populations of differen...
IB DP Biology: SL复习笔记4.1.2 Methods of Nutrition
Autotroph vs Heterotroph Organisms need energy in the form of ATP to survive The energy stored in ATP comes from other organic molecules, such as carbohydrates, and is transferred during the proces...
IB DP Biology: SL复习笔记4.1.1 Species & Population
Species A species can be defined as: A group of organisms that can interbreed to produce fertile offspring The ability to breed and produce fertile offspring is a useful method of distinguishing sp...
IB DP Biology: SL复习笔记3.4.5 Skills: Genetic Modification & Biotechnology
Cloning Plants Design of an experiment to assess one factor affecting the rooting of stem-cuttings Stems can be cut so that roots develop from the cut end of the stem This is a way of cloning plant...
IB DP Biology: SL复习笔记3.4.4 Cloning
Cloning Clones are groups of genetically identical organisms, derived from a single original parent cell A cloned cell is a cell that is genetically identical to the cell that it originated from Se...
IB DP Biology: SL复习笔记3.4.3 Genetic Modification
Genetic Modification Genetic modification is carried out by gene transfer between species Genetic modification is a term usually used to refer to the transfer of DNA sequences from one species to a...
IB DP Biology: SL复习笔记3.4.2 DNA Profiling
Use of DNA Profiling DNA profiling involves comparison of DNA DNA profiling (genetic fingerprinting) enables scientists to identify suspects for a crime and identify corpses because every person (a...
IB DP Biology: SL复习笔记3.4.1 Electrophoresis & PCR
Gel Electrophoresis Gel electrophoresis is used to separate proteins or fragments of DNA according to size Gel electrophoresis is a technique used widely in the analysis of DNA, RNA, and proteins D...
IB DP Biology: SL复习笔记3.3.5 Mutations & Disease
Causes of Mutations A mutation is a change in the sequence of base pairs in a DNA molecule They occur randomly and continuously to create new alleles of a gene Often only with a very small number o...
IB DP Biology: SL复习笔记3.3.4 Inheritance of Genetic Diseases
Causes of Genetic Disease A gene can affect a phenotype of an organism A gene codes for a single polypeptide The polypeptide affects the phenotype through a particular mechanism The phenotype of an...
沃顿商赛哪家培训机构好？如何报名？
一个好的商赛经历，能让招生官看到你的商科热情和商科潜力！参加什么样的商赛能增加被商学院录取的概率呢？那就不得不提最具含金量的“爬藤学霸杀手锏”——沃顿商赛！那么应该如何报名呢？什么时候报名？沃顿商赛哪...
IB DP Biology: SL复习笔记3.3.3 Skills: Inheritance
Constructing Punnett Grids A monohybrid trait is one that is controlled by only one gene Generally, we consider that such a gene has two alleles Either: one allele is dominant and the other is rece...
