CIE A Level Chemistry復習筆記1.1.4 Atomic & Ionic Radius
Atomic & Ionic Radius Atomic radius The?atomic?radius?of an element is a measure of the size of an atom It is?half?the distance between the two?nuclei?of two covalently bonded atoms of the same...
CIE A Level Chemistry復習筆記1.1.3 Determining Subatomic Structure
Determining the Subatomic Structure of Atoms & Ions An atom is?neutral?and has no overall charge Ions on the other hand are formed when atoms either?gain?or?lose?electrons, causing them to beco...
CIE A Level Chemistry復習筆記1.1.2 Mass, Charge & Subatomic Particles
Mass & Charge Distribution The mass of an atom is?concentrated?in the nucleus, because the nucleus contains the heaviest subatomic particles (the neutrons and protons) The mass of the electron ...
CIE A Level Chemistry復習筆記1.1.1 Particles in the Atom & Atomic Structure
Structure of an Atom All matter is composed of?atoms, which are the smallest parts of an element that can take place in?chemical reactions Atoms are mostly made up of?empty?space?around a very smal...
CIE A Level Biology復習筆記19.3.2 Using GMOs in Agriculture
GMOs in Food: Social & Ethical Implications The genetic modification of microorganisms for the production of medicines, antibiotics and enzymes raises little debate compared to the use of genet...
CIE A Level Biology復習筆記19.3.1 Genetically Modified Organisms in Agriculture
Genetic Engineering: Use in Agriculture Genetic engineering is a technique used to deliberately modify a specific characteristic (or characteristics) of an organism The technique involves?removing ...
CIE A Level Biology復習筆記19.2.4 Gene Technology in Medicine
Social & Ethical Considerations The use of?gene technology?(genetic screening and gene therapy) in medicine is becoming more common Genetic screening in medicine is being used to: Allow people ...
CIE A Level Biology復習筆記19.2.3 Gene Therapy
Gene Therapy Gene therapy involves using various mechanisms to?alter a person's genetic material?to treat, or cure, diseases As scientists gain a better understanding of the human genome and theref...
CIE A Level Biology復習筆記19.2.2 Genetic Screening
Genetic Screening In certain circumstances (eg. in the pregnancy in an older woman, or pregnancy where there is a family history of a genetic disease) may require individuals to determine if they h...
傳媒專業留學哪個學校好？
我們現在比以往任何時代都更容易了解周圍世界，獲悉各種動態，傳播各種信息。這所有的一切得益于傳媒行業的蓬勃發展。傳媒一直以來都是留學的熱門專業，中國學生最常選擇的目的地包括美國、英國、香港、韓國等。...
CIE A Level Biology復習筆記19.2.1 Recombinant Human Proteins
Recombinant Human Proteins DNA that has been altered by introducing nucleotides from another source is called?recombinant DNA?(rDNA) If the organism contains nucleotides from a different species it...
CIE A Level Biology復習筆記19.1.11 Bioinformatics
Bioinformatics The various technologies (eg. microarrays and gene sequencing) being used today to analyse genes and proteins generate enormous quantities of data The data being collected ranges fro...
