AQA A Level Biology复习笔记4.3.2 Mutations in Chromosome Number
Mutations in Chromosome Number Mutations can occur at different levels Non-disjunction occurs when chromosomes fail to separate during meiosis This occurs spontaneously The gametes ma...
AQA A Level Biology复习笔记4.2.6 Nucleic Acid & Amino Acid Sequence Comparison
Relating Nucleic Acid & Amino Acid Sequences A triplet is a sequence of three DNA bases that codes for a specific amino acid A codon is a sequence of three mRNA bases that codes for a sp...
AQA A Level Biology复习笔记4.2.5 Translation
Translation A gene is a sequence of nucleotide bases in a DNA molecule that codes for the production of a specific sequence of amino acids, that in turn make up a specific polypeptide (prote...
AQA A Level Biology复习笔记4.2.4 Eukaryotic Transcription
Eukaryotic Transcription The genome within eukaryotic cells contains many non-coding sections Non-coding DNA can be found: Between genes, as non-coding multiple repeats Within genes, as intr...
AQA A Level Biology复习笔记4.2.3 Transcription
Transcription A gene is a sequence of nucleotide bases in a DNA molecule that codes for the production of a specific sequence of amino acids, that in turn make up a specific polypeptide (pro...
AQA A Level Biology复习笔记4.2.2 The Structure of RNA
The Structure of mRNA and tRNA Like DNA, the nucleic acid RNA (ribonucleic acid) is a polynucleotide – it is made up of many nucleotides linked together in a long chain Like DNA, RNA nucleot...
Edexcel IGCSE Maths 复习笔记 4.9.2 3D Pythagoras & SOHCAHTOA
Edexcel IGCSE Maths 复习笔记 4.9.2 3D Pythagoras & SOHCAHTOA What are Pythagoras & SOHCAHTOA? Pythagoras’ Theorem helps us find missing side lengths of a right-angled triangle It is also fr...
Edexcel IGCSE Maths 复习笔记 4.9.1 SOHCAHTOA
Edexcel IGCSE Maths 复习笔记 4.9.1 SOHCAHTOA What is SOHCAHTOA? SOHCAHTOA is a mnemonic – ie a way to remember the 3 important formulas for sin (sine), cos (cosine), and tan (tangent) In a right-an...
Edexcel IGCSE Maths 复习笔记 4.8.1 Pythagoras Theorem
Edexcel IGCSE Maths 复习笔记 4.8.1 Pythagoras Theorem What is Pythagoras? Pythagoras was a Greek mathematician who lived over 2500 years ago He is most famous for Pythagoras’ Theorem, which include...
