Edexcel IGCSE Maths 復習筆記 2.4.2 Factorising Quadratics - Harder What is a quadratic expression? A quadratic expression looks like this:ax2?+ bx + c (as long as a ≠ 0) Note: If there are any high...
Maths Skill: Frequency of Bases All DNA nucleotides contain the same phosphate group and deoxyribose sugar. The nitrogenous?base?attached to the sugar can vary between nucleotides There are?...
A-level選課需要圍繞大學目標專業，以及個人興趣和能力來進行。 學四門A-level難度如何？ 很多同學認為考四門A-level會很難，會占用更多時間，或許沒必要。大學申請也只需要三門A-level。 話雖如此，但很多學生還...
The Process of Semi-Conservative Replication DNA replication occurs in preparation for?mitosis, when a parent cell divides to produce two genetically identical daughter cells – as each daugh...
The Purpose of Semi-Conservative Replication Before?a (parent) cell?divides, it needs to?copy the DNA?contained within it This is so that the two new (daughter) cells produced will both rece...
Edexcel IGCSE Maths 復習筆記 2.4.1 Factorising Quadratics - Basics What is a quadratic expression? A quadratic expression looks like this:ax2?+ bx + c (as long as a ≠ 0) Note: If there are any high...
Appreciating How the Function of DNA Was Determined DNA was actually first observed in the 1800s by a Swiss scientist called Friedrich Miescher Miescher is credited with being the first pers...
Ribosomes Ribosomes are?small organelles?that are either?free?in the cytoplasm (of all cells) or are attached to the?rough endoplasmic reticulum?(only in eukaryotic cells) Ribosomes are the ...
The Structure of RNA Like DNA, the nucleic acid RNA (ribonucleic acid) is a?polynucleotide?– it is made up of?many nucleotides?linked together in a chain Like DNA, RNA nucleotides contain th...
