AQA A Level Biology复习笔记8.2.11 Tumour Development
Tumour Development Cancers demonstrate how important it is that cell division is precisely controlled, as cancers arise due to uncontrolled mitosis Cancerous cells divide repeatedly and unco...
Edexcel IGCSE Biology 复习笔记 2.7.7 Practical: The Effect of Exercise on Breathing
Edexcel IGCSE Biology 复习笔记 2.7.7 Practical: The Effect of Exercise on Breathing Practical: The Effect of Exercise on Breathing Exercise causes the frequency of breathing to increase in o...
AQA A Level Biology复习笔记8.2.10 Two Types of Tumours
The Characteristics of Benign & Malignant Tumours Tumours are groups of abnormal cells that form lumps or growths They can start in any of the cells in our bodies Tumours have different ...
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...
