Blue Workbooks
Workbook 14 Exchanging Materials Overview
The cells in animals and plants all need oxygen to be able to release energy for the jobs they do. They all produce carbon dioxide as a waste product.
Workbook 15 Kidneys Overview
People whose kidneys do not function properly die because toxic substances accumulate in their blood. Their lives can be saved by using dialysis machines or having a healthy kidney transplanted.
Workbook 16 Transporting Materials Overview
Substances are transported around the body by the circulation system (the heart, the blood vessels and the blood). They are transported from where they are taken into the body to the cells, or from the cells to where they are removed from the body.The human body needs to react to the increased demand for energy during exercise.
Workbook 17 Making Use of Microorganisms Overview
People from many different cultures have known for thousands of years how to use microorganisms to make various types of food and drink such as bread, beer, wine and yoghurt. If the microorganisms that we want to use are contaminated, the other microorganisms that are present may produce harmful substances. So it is only safe to use microorganisms if we have a pure culture containing only one particular species of microorganism.
Workbook 18 Industrial Use of Microorganisms `Overview
Microorganisms are used on a large scale to make many useful substances including antibiotics such as penicillin, foods such as mycoprotein and fuels such as biogas and ethanol.
