IB DP Biology: HL复习笔记8.1.1 Metabolic Pathways
Metabolic Pathways Metabolic pathways involve a series of small steps, each step involves a chemical change The enzyme-catalysed reactions that make up metabolic pathways usually consist of chains ...
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IB DP Biology: HL复习笔记7.3.6 Skills: Polysomes & Ribosomes
Identifying Polysomes Translation can occur simultaneously at multiple positions along mRNA Polysomes (or polyribosomes) are groups of two or more ribosomes translating the same mRNA transcript Mul...
IB DP Biology: HL复习笔记7.3.5 Levels of Protein Structure
Primary Structure Levels of Protein Structure Proteins are relatively large, complex molecules that contain one or more chains of amino acids known as polypeptides The three-dimensional arrangement...
IB DP Biology: HL复习笔记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复习笔记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复习笔记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复习笔记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复习笔记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复习笔记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 ...
