WJEC • Biology

These detailed revision notes cover WJEC A-Level Biology Unit 1.6: Cell Division. The guide explains chromosomes, the cell cycle, mitosis, meiosis, genetic variation, mitotic index calculations and common exam comparisons. Topics included: Chromosomes, DNA, genes, chromatids and centromeres. Homologous chromosome pairs, maternal and paternal chromosomes. Diploid and haploid chromosome numbers. The cell cycle, including G1, S and G2 stages of interphase. DNA replication and chan...

These detailed revision notes cover WJEC A-Level Biology Unit 1.5: Nucleic Acids and Their Functions. The guide explains nucleotides, ATP, DNA, RNA, DNA replication and protein synthesis in clear and simple language. Topics included: Nucleotide structure: phosphate, pentose sugar and nitrogen-containing organic base. Phosphodiester bonds and polynucleotide formation. Purine and pyrimidine bases. ATP structure, ATP hydrolysis, ADP, inorganic phosphate and phosphorylation. ATP as...

These detailed revision notes cover WJEC A-Level Biology Unit 1.4: Enzymes. They provide simple explanations of enzyme structure and action, enzyme graphs, inhibition, practical skills and industrial uses of enzymes. Topics included: Enzymes as biological catalysts. Globular protein structure, active sites, substrates and products. Enzyme-substrate complexes and enzyme specificity. The lock-and-key hypothesis and induced-fit hypothesis. Activation energy and how enzymes lower a...

These detailed revision notes cover WJEC A-Level Biology Unit 1.3: Cell Membranes and Transport. The notes are written in clear, student-friendly language and include essential definitions, comparison tables, practical guidance, water-potential calculations and exam-answer wording. Topics included: The structure and functions of the cell surface membrane. The fluid mosaic model. Phospholipid bilayers, hydrophilic phosphate heads and hydrophobic fatty-acid tails. Intrinsic, extrins...

These detailed revision notes cover WJEC A-Level Biology Unit 1.2: Cell Structure and Organisation. They are written in clear, simple language and are designed to help first-year A-Level Biology students understand cell structures, microscopy and biological organisation. Topics included: Cell theory, unicellular organisms and multicellular organisms. Eukaryotic cell structure and the functions of organelles. The nucleus, nucleolus, ribosomes, endoplasmic reticulum, Golgi apparatus an...

Struggling to remember all the comparative anatomy, transport mechanisms, and homeostatic pathways for your Eduqas A-Level Biology exams? This premium, interactive Google Sheets Specification Tracker is specifically built to map out, organize, and track your revision for Component 3 (Requirements for Life) using active recall principles. This digital study tool covers every single official learning objective for the Eduqas A-Level Biology Component 3 module, including: • 3.1 Adaptations fo...

Struggling to memorise the complex pathways of genetics and reproduction for your Eduqas A-Level Biology exams? This premium, interactive Google Sheets Specification Tracker is specifically built to map out, organize, and track your revision for Component 2 (Continuity of Life) using active recall principles. This digital study tool covers every single official learning objective for the Eduqas A-Level Biology Component 2 module, including: • 2.1 All organisms are related through their evo...

Struggling to keep track of the foundational topics for your Eduqas A-Level Biology exams? This premium, interactive Google Sheets Specification Tracker is specifically built to map out, organize, and track your revision for the essential Core Concepts using active recall principles. This digital study tool covers every single official learning objective for the Eduqas A-Level Biology Core Concepts module, including: • C.1 Biological Compounds (Elements, Carbohydrates, Lipids, Proteins & I...

Struggling to track what you actually know for your Eduqas A-Level Biology Component 1 exam? This premium, interactive Google Sheets Specification Tracker is designed to completely organize your revision and maximize your grades using active recall principles. This digital study tool covers every single official learning objective for Eduqas A-Level Biology Component 1, including: • 1.1 Importance of ATP & Chemiosmosis • 1.2 Respiration (Glycolysis, Link Reaction, Krebs Cycle, ETC, Anae...

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