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...
2022年AP成績已公布！CB官網公布美國TOP30大學最新AP換學分要求！
2022年AP考試成績于7月5日美東時間8:00公布，不知道各位同學今年發揮得如何呢？眾所周知，AP分數不僅可以用來作為申請大學的依據，還可以用來兌換未來的大學學分。隨著今年AP分數的發布，也有不少同學們對于AP換...
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...
CAIE考試局A-Level近四年A和A*率數據統計！六大科目難度如何？
A-Level總共有70多門科目。一般來說，中國學生最常選的科目有數學、進階數學、物理、化學、經濟、生物這6門課程。 這些科目屬于基礎學科，不僅學術性強，更能考察學生的學習能力和邏輯思維能力，因此也備受各大高...
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...
IB DP Biology: HL復習筆記7.1.6 Skills: Nucleosomes & Molecular Visualisation Software
Skills: Nucleosomes & Molecular Visualisation Software Molecular visualisation software?can be used to help understand molecular structures Macromolecules like?protein,?DNA,?RNA?and?complex car...
IB DP Biology: HL復習筆記7.1.5 Skills: The Hershey & Chase Experiment
Skills: The Hershey & Chase Experiment Which Biomolecule is the Heritable Material? DNA was identified in 1869 but many scientists assumed that protein was the heritable material owing to the f...
IB DP Biology: HL復習筆記7.1.4 DNA Sequencing
DNA Sequencing Application: Use of nucleotides containing dideoxyribonucleic acid to stop DNA replication in preparation of samples for base sequencing DNA sequencing allows for the nucleotide base...
