AQA A Level Biology复习笔记8.2.9 RNA Interference
RNA Interference RNA interference (RNAi) is a form of post-translational modification which occurs in the cytoplasm RNAi is sequence-specific silencing of gene expression and therefore can b...
Edexcel IGCSE Biology 复习笔记 2.7.6 Smoking & the Human Gas Exchange System
Edexcel IGCSE Biology 复习笔记 2.7.6 Smoking & the Human Gas Exchange System Smoking & the Gas Exchange System Smoking causes chronic obstructive lung disease (COPD), coronary heart ...
AQA A Level Biology复习笔记8.2.8 Epigenetics & Disease
Epigenetics & Disease Inheritance of epigenetic modifications Epigenetic imprinting is the DNA methylation of certain genes and it occurs during the formation of oocytes and sperm cells ...
AQA A Level Biology复习笔记8.2.7 Epigenetics
Epigenetics DNA is wrapped around histone proteins which form a nucleosome. Nucleosomes coil tightly around each other to form the chromosome structure. In eukaryotic cells, th...
AQA A Level Biology复习笔记8.2.6 Evaluating Data about Genetic Expression
Interpret & Evaluate Data about Genetic Expression RNA analysis RNA analysis is important with regards to gene expression From the outside, most cells look almost identical with the same...
AQA A Level Biology复习笔记8.2.5 Regulation of Transcription
Transcription Factors Eukaryotes use transcription factors to control gene expression A transcription factor is a protein that controls the transcription of genes by binding to a specific re...
AQA A Level Biology复习笔记8.2.4 Producing Tissue Cultures of Explants
Apparatus & Techniques: Producing Tissue Cultures from Cauliflower Explants Creating clones of cauliflowers is used to demonstrate totipotency through the production of tissue culture Ca...
美国计算机奥赛USACO 2021-2022赛季回顾，USACO课程助力新赛季备赛！
对于喜欢计算机的同学们来说，USACO受到斯坦福、MIT、卡梅等美国大学的高度认可，可谓强势提升自己背景的好活动之一！ 作为一个升级类赛事，大多数参赛同学的目标肯定不止一次晋级。因此早早准备起来才是上策！ ...
AQA A Level Biology复习笔记8.2.3 The Use of Stem Cells
Evaluating the Use of Stem Cells Use of embryonic stem cells Due to their ability to differentiate into multiple cell types, stem cells have huge potential in the therapeutic treatment of di...
