|Using DNA in science and technology. |
|A cycle is a biological pathway or process in which the end product of one cycle becomes the starting point for the next cycle. Write an essay|
|about cycles in biology. |
|Carbon dioxide may affect organisms directly or indirectly. Describe and explain these effects. |
|The causes of disease in humans. |
|Mean temperatures are rising in many parts of the world. The rising temperatures may |
|result in physiological and ecological effects on living organisms. Describe and explain |
|these effects. |
|The causes of variation and its biological importance. |
| |
|The transfer of substances containing carbon between organisms and between organisms and the environment. |
|Movement in cells. |
|Transfer through ecosystems. |
|The part played by the movement of substances across cell membranes in the functioning of different organs and organ systems. |
|The part played by enzymes in the functioning of different cells, tissues and organs. |
|The ways in which organisms use ATP. |
|The causes of genetic variation. |
|Chemical coordination in animals and plants. |
|The roles of proteins in living organisms. |
|The structure of enzymes and their uses in commercial processes. |
|Digestion and absorption of carbohydrates and the regulation of blood glucose. |
|The structures and functions of different types of plant cells. |
|Polymers have different structures. They also have different functions. Describe how the structures of different polymers are related to their|
|functions. |
|Heat and many different substances are transferred within the human body and between the body and the environment. Explain how surface area is|
|linked to this transfer. |
|Carbon dioxide in organisms and ecosystems. |
|How nitrogen-containing substances are made available to and are used by living organisms. |
|The biological importance of plants to humans. |
|How the structure of proteins relates to their function. |
| |
|Negative feedback and its importance in Biology. |
| |
|Factors which influence the concentration of glucose in the blood. |
| |
|Maintaining constant conditions in the body. |
| |
|Describe how ions including (sodium, phosphorus and hydrogen) are used in living organisms. |
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