Edexcel IGCSE Biology 復習筆記 2.9.1 Excretion
Edexcel IGCSE Biology 復習筆記 2.9.1 Excretion The Need for Excretion in Humans Many of the necessary?metabolic reactions?that take place within the cells of organisms produce?waste products...
Edexcel IGCSE Biology 復習筆記 2.8.11 Blood Vessels & the Circulatory System
Edexcel IGCSE Biology 復習筆記 2.8.11 Blood Vessels & the Circulatory System Blood Vessels There are three main types of blood vessel: Arteries Veins Capillaries Smaller vessels t...
Edexcel IGCSE Biology 復習筆記 2.8.10 The Heart
Edexcel IGCSE Biology 復習筆記 2.8.10 The Heart Structure & Function of the Heart The heart organ is a?double pump Oxygenated blood?from the lungs enters the?left?side of the heart and i...
Edexcel IGCSE Biology 復習筆記 2.8.8 Human Transport Systems: White Blood Cells & Immunity
Edexcel IGCSE Biology 復習筆記 2.8.8 Human Transport Systems: White Blood Cells & Immunity White Blood Cells White blood cells are part of the body’s immune system These specialised cells defen...
AQA A Level Biology復習筆記8.4.13 Uses of Genetic Fingerprinting
Uses of Genetic Fingerprinting Polymerase chain reaction?(PCR) is a common molecular biology technique used in most applications of gene technology, for example,?DNA profiling?(eg. identific...
Edexcel IGCSE Biology 復習筆記 2.8.7 Human Transport Systems: Platelets
Edexcel IGCSE Biology 復習筆記 2.8.7 Human Transport Systems: Platelets Platelets Platelets?are involved in?helping the blood clot Platelets are?fragments of cells that are involved in blood...
AQA A Level Biology復習筆記8.4.12 Genetic Fingerprinting
Genetic Fingerprinting DNA can be collected from almost anywhere on the body, e.g. the root of a hair or saliva from a cup. After collection DNA must be prepared for gel electrophoresis so t...
AQA A Level Biology復習筆記8.4.11 Gel Electrophoresis
Apparatus & Techniques: Gel Electrophoresis Gel electrophoresis is a technique used widely in the analysis of DNA, RNA and proteins During electrophoresis the molecules are separated acc...
AQA A Level Biology復習筆記8.4.10 Variable Number Tandem Repeats
Variable Number Tandem Repeats Variable number tandem repeats?(VNTRs) are regions found in the non-coding part of DNA A short DNA sequence (e.g. GATA) is repeated a variable number of times ...
AQA A Level Biology復習筆記8.4.9 Genetic Counselling & Personalised Medicine
Genetic Counselling & Personalised Medicine Genetic counselling Genetic screening can leave a patient or parent with many questions Genetic counsellors?are commonly used to help individu...
AQA A Level Biology復習筆記8.4.8 Screening Patients
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...
AQA A Level Biology復習筆記8.4.7 DNA Probes & DNA Hybridisation
DNA Probes & DNA Hybridisation DNA hybridisation is a process that is commonly used in medical diagnostic tests and genetic screening In DNA hybridisation?two complementary single-strand...
