IB DP Biology: SL復習筆記2.6.3 Biotechnology
Polymerase Chain Reaction Use of Taq DNA polymerase to produce multiple copies of DNA rapidly by the polymerase chain reaction (PCR) Polymerase chain reaction?(PCR) is a common molecular biology te...
IB DP Biology: SL復習筆記2.6.2 Translation
Translation Translation is the synthesis of polypeptides on ribosomes This stage of protein synthesis occurs?in the cytoplasm?of the cell After leaving the nucleus, the?mRNA molecule attaches to a ...
IB DP Biology: SL復習筆記2.6.1 Transcription
Transcription This process of protein synthesis occurs in?two stages: Transcription?–?DNA?is transcribed and an?mRNA?molecule is produced mRNA is a single stranded RNA molecule that transfers the i...
IB DP Biology: SL復習筆記2.5.3 Skills: DNA Replication
Meselson & Stahl's Experiments Analysis of Meselson and Stahl’s results to obtain support for the theory of semi-conservative replication of DNA Crick and Watson, as they defined the shape of D...
IB DP Biology: SL復習筆記2.5.2 DNA Replication
DNA Replication The replication of DNA is semi-conservative and depends on complementary base pairing Semi-conservative means that?one strand of the 'parent' DNA is kept?in the 'daughter' molecule ...
IB DP Biology: SL復習筆記2.5.1 DNA & RNA Structure
Nucleic Acids: Structure The nucleic acids DNA and RNA are polymers of nucleotides Both DNA and RNA are?polymers?that are made up of?many repeating units?called?nucleotides Each nucleotide is forme...
IB DP Biology: SL復習筆記2.4.3 Skills: Enzyme Experiments
Practical 3: Enzyme Experiments Design of experiments to test the effect of temperature, pH and substrate concentration on the activity of enzymes Three different?independent variables?can be teste...
IB DP Biology: SL復習筆記2.4.2 Immobilised Enzymes
Immobilised Enzymes Immobilised enzymes are widely used in industry Just before 1900, it was discovered that enzymes could be used to catalyse production of alcohol in the absence of yeast cell Sin...
IB DP Biology: SL復習筆記2.4.1 Enzymes
Structure of Enzymes Enzymes are?biological catalysts ‘Biological’ because they function in?living systems ‘Catalysts’ because they?speed up the rate of chemical reactions?without being used up or ...
