IB DP Biology: HL復習筆記7.3.4 Bioinformatics
Bioinformatics The 21st?Century has seen a tremendous?increase?in the amount of?biological data This has been due to rapid advances in?DNA sequencing?and other technologies Developments in scientif...
IB DP Biology: HL復習筆記7.3.3 Translation in Prokaryotes
Translation in Prokaryotes Prokaryotic cells have a?less complex ultrastructure?than eukaryotic cells Eukaryote cells are divided up into membrane-bound compartments called organelles Transcription...
IB DP Biology: HL復習筆記7.3.2 Ribosomes
Structure of Ribosomes Ribosomes?are found in cells Either?freely?in the cytoplasm (of all cells) Or bound to the?endoplasmic reticulum?(ER) to form?rough ER?(only in eukaryotic cells) Ribosomes ar...
IB DP Biology: HL復習筆記7.3.1 Translation
Initiation of Translation Initiation of translation involves assembly of the components that carry out the process. During translation, the specific sequence of messenger RNA (mRNA) is translated t...
IB DP Biology: HL復習筆記7.2.5 Skills: Analysing DNA Methylation Patterns
Skills: Analysing DNA Methylation Patterns Methylation of DNA Methyl groups?(-CH3)?can be directly added to DNA to?change the activity?of a gene DNA methylation commonly involves the direct additio...
IB DP Biology: HL復習筆記7.2.4 Post-transcriptional Modification
Modification of RNA In all kingdoms of life,?gene expression can be regulated?after an mRNA transcript has been produced Post-transcriptional modification of mRNA Helps?prevent degradation mRNA is ...
IB DP Biology: HL復習筆記7.2.3 Transcription
Nucleosomes Regulate Transcription Nucleosomes are the?structural unit of DNA packaging?in eukaryotes that?facilitate supercoiling Within a nucleosome, DNA is wrapped around proteins called?histone...
IB DP Biology: HL復習筆記7.2.2 Environment & Gene Expression
Environment & Gene Expression Environment and Gene Expression An organism’s internal or external?environment can influence gene expression?patterns The levels of regulatory proteins or transcri...
IB DP Biology: HL復習筆記7.2.1 Regulation of Gene Expression by Proteins
The Promoter Region The function of the promoter Only some DNA sequences code for the production of polypeptides, these are called?coding sequences Non-coding sequences produce functional RNA molec...
