Sustainable Schools

Biology in Years 7 and 8 

This page is still being worked on, but below you can find an outline of the topics you will study during KS3.

Please let your teacher know if there is something specific you would like to see on the site.


1. Cells and cell functions

By the end of this topic you should know:

         that animal and plant cells can form tissues, and tissues can form organs

b          the functions of chloroplasts and cell walls in plant cells and the functions of the cell membrane, cytoplasm and nucleus in both plant and animal cells

c          ways in which some cells, including ciliated epithelial cells, sperm, ova, and root hair cells, are adapted to their functions

d          that fertilisation in humans and flowering plants is the fusion of a male and a female cell

         to relate cells and cell functions to life processes in a variety of organisms.


2. Humans as organisms

By the end of this topic you should know


a          about the need for a balanced diet containing carbohydrates, proteins, fats, minerals, vitamins, fibre and water, and about foods that are sources of these 

         the principles of digestion, including the role of enzymes in breaking down large molecules into smaller ones

c          that the products of digestion are absorbed into the bloodstream and transported throughout the body, and that waste material is egested 

d          that food is used as a fuel during respiration to maintain the body's activity and as a raw material for growth and repair



e          the role of the skeleton and joints and the principle of antagonistic muscle pairs [for example, biceps and triceps] in movement



         about the physical and emotional changes that take place during adolescence

g          about the human reproductive system, including the menstrual cycle and fertilisation

h          how the fetus develops in the uterus, including the role of the placenta



          the role of lung structure in gas exchange, including the effect of smoking


j           that aerobic respiration involves a reaction in cells between oxygen and food, in which glucose is broken down into carbon dioxide and water

         to summarise aerobic respiration in a word equation

l           that the reactants and products of respiration are transported throughout the body in the bloodstream



        that the abuse of alcohol, solvents, and other drugs affects health 

n          how the growth and reproduction of bacteria and the replication of viruses can affect health, and how the body's natural defences may be enhanced by immunisation and medicines.


3.Green plants as organisms

By the end of this topic you should know

Nutrition and growth

a         that plants need carbon dioxide, water and light for photosynthesis, and produce biomass and oxygen

         to summarise photosynthesis in a word equation 

         that nitrogen and other elements, in addition to carbon, oxygen and hydrogen, are required for plant growth

         the role of root hairs in absorbing water and minerals from the soil 


e          that plants carry out aerobic respiration.


4. Variation, classification and inheritance

By the end of this topic you should know:


         about environmental and inherited causes of variation within a species


         to classify living things into the major taxonomic groups


         that selective breeding can lead to new varieties.


5. Living things in their environment

You should know:

Adaptation and competition

         about ways in which living things and the environment can be protected, and the importance of sustainable development

         that habitats support a diversity of plants and animals that are interdependent 

         how some organisms are adapted to survive daily and seasonal changes in their habitats 

         how predation and competition for resources affect the size of populations [for example, bacteria, growth of vegetation]


Feeding relationships

         about food webs composed of several food chains, and how food chains can be quantified using pyramids of numbers

f        how toxic materials can accumulate in food chains e.g., DDT.




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