IB DP Biology: HL復習筆記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: HL復習筆記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: HL復習筆記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: HL復習筆記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: HL復習筆記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: HL復習筆記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: HL復習筆記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: HL復習筆記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: HL復習筆記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...
IB DP Biology: HL復習筆記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...
劍橋土地經濟專業是什么專業？
作為世界頂尖學府之一的劍橋大學卻具有一個十分特殊且與經濟相關的專業——土地經濟。劍橋土地經濟專業是什么專業？劍橋大學的土地經濟是不少同學的夢想專業，但畢竟土經每年只招60多個人。 劍橋·土地經濟 Land Eco...
IB DP Biology: HL復習筆記3.3.2 Inheriting Alleles
Segregation of Alleles Meiosis is a form of?nuclear division?that results in the?production of?haploid?cells?from diploid cells During meiosis a diploid cell will?divide twice?to form?four haploid ...
