Edexcel A-Level Biology AS 3.20 Phenotype Environment and Epigenetics Topic Practice

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Pearson Edexcel IAL Biology

Unit 1: Molecules, Diet, Transport and Health

Topic 1 - Molecules, Transport and Health

Topic 2 - Membranes, Proteins, DNA and Gene Expression

Unit 2: Cells, Development, Biodiversity and Conservation

Topic 3 - Cell Structure, Reproduction and Development

3.1—Cells as the basis of life

3.2—Organisation in multicellular organisms

3.3—Eukaryotic cell ultrastructure

3.4—rER, Golgi apparatus and protein transport

3.5—Prokaryotic cell ultrastructure

3.6—Recognising organelles in EM images

3.7—Microscopy magnification, resolution and staining

3.8—Core Practical 5 - animal cells and scale

3.9—Loci and gene linkage

3.10—Meiosis and genetic variation

3.11—Mammalian gamete specialisation

3.12—Mammalian fertilisation

3.13—Fertilisation in flowering plants

3.14—Mitosis and the cell cycle

3.15—Core Practical 6 - root tip squash mitosis

3.16—Mitotic index calculations

3.17—Stem cells and medical therapies

3.18—Differential gene expression and cell specialisation

3.19—Post-transcriptional changes to mRNA

3.20—Phenotype, environment and epigenetics

3.21—Multiple alleles, polygenic inheritance and continuous variation

3.R1—Recommended Additional Practical - pollen tube growth

Topic 4 - Plant Structure and Function, Biodiversity and Conservation

Unit 3: Practical Skills in Biology I

Practical Skills in Biology I

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