Hey your browser is offline.

A / AS Level Biology

Cell structure biology-1

  • 1.1 The microscope in cell studies
  • 1.2 Cells as the basic units of living organisms

Biological molecules biology-2

  • 2.1 Testing for biological molecules
  • 2.2 Carbohydrates and lipids
  • 2.3 Proteins and water

Enzymes biology-3

  • 3.1 Mode of action of enzymes
  • 3.2 Factors that affect enzyme action

Cell membranes and transport biology-4

  • 4.1 Fluid mosaic membranes
  • 4.2 Movement of substances into and out of cells

The mitotic cell cycle biology-5

  • 5.1 Replication and division of nuclei and cells
  • 5.2 Chromosome behaviour in mitosis

Nucleic acids and protein synthesis biology-6

  • 6.1 Structure and replication of DNA
  • 6.2 Protein synthesis

Transport in plants biology-7

  • 7.1 Structure of transport tissues
  • 7.2 Transport mechanisms

Transport in mammals biology-8

  • 8.1 The circulatory system
  • 8.2 The heart

Gas exchange and smoking biology-9

  • 9.1 The gas exchange system
  • 9.2 Smoking

Infectious disease biology-10

  • 10.1 Infectious diseases
  • 10.2 Antibiotics

Immunity biology-11

  • 11.1 The immune system
  • 11.2 Antibodies and vaccination

Energy and respiration biology-12

  • 12.1 Energy
  • 12.2 Respiration

Photosynthesis biology-13

  • 13.1 Photosynthesis as an energy transfer process
  • 13.2 Investigation of limiting factors
  • 13.3 Adaptations for photosynthesis

Homeostasis biology-14

  • 14.1 Homeostasis in mammals
  • 14.2 Homeostasis in plants

Control and co-ordination biology-15

  • 15.1 Control and co-ordination in mammals
  • 15.2 Control and co-ordination in plants

Inherited change biology-16

  • 16.1 Passage of information from parent to offspring
  • 16.2 The roles of genes in determining the phenotype
  • 16.3 Gene control

Selection and evolution biology-17

  • 17.1 Variation
  • 17.2 Natural and artificial selection
  • 17.3 Evolution

Biodiversity, classification and conservation biology-18

  • 18.1 Biodiversity
  • 18.2 Classification
  • 18.3 Conservation

Genetic technology biology-19

  • 19.1 Principles of genetic technology
  • 19.2 Genetic technology applied to medicine
  • 19.3 Genetically modified organisms in agriculture