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...
Recombinant DNA Technology Recombinant DNA The genetic code is?universal, meaning that almost every organism uses the same four nitrogenous bases – A, T, C & G. There are a few exceptions The g...
Genome Sequencing Projects A genome contains?all of the genes within an organism Advances in technology have allowed scientists to map and sequence the genes within an organism's genome Genome sequ...
Totipotent Cells A?stem cell?is a cell that can?divide?(by mitosis) an?unlimited number of times Each new cell that is produced when a stem cell divides has the potential to?remain a stem cell?or t...
Gene Mutations A?gene mutation?is a change in the sequence of base pairs in a DNA molecule that may result in an altered polypeptide Mutations occur?continuously?and?spontaneously Errors in the DNA...
The Definition of a 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 popu...
ISEF 國際科學與工程大獎賽（Regeneron ISEF）是全球最大規模、最高等級、也是唯一面向9-12年級（即初三至高三）中學生的科學學術活動，每年在美國的不同城市舉行。 學術活動學科包括了所有自然科學和部分社會科...
2022-2023年SAT/ACT標化考試時間匯總！時間不等人，一定要提前做好準備！ ACT考什么、怎么考？ 很多初次接觸ACT考試的學生和家長都不了解ACT具體考什么、怎么考。下面簡單介紹一下考試。 ACT考試采取電腦考試的方...
Edexcel IGCSE Maths復習筆記 1.9.1 Compound Interest What is compound interest? Compound interest is where interest is paid on the interest from the year (or whatever time frame is being used) befor...
擇校期一到，許多家長便瀏覽國際化學校網站、公眾號、教育論壇，以獲悉學費、課程、師資、位置、錄取情況……擇校展作為國際化學校和家長溝通的重要渠道，可近距離、更直接地家校了解。目前，南京民辦校已陸續發布...
What is a reverse percentage? A reverse percentage question is one where we are given?the value after a percentage increase or decrease?and asked to find the value before the change How to do rever...
Genetic Variation Phenotype variation The observable characteristics of an organism are its phenotype Phenotypic variation is the?difference in phenotypes?between organisms of the same?speci...
