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You need to know about a few examples of exchange surfaces. Mammals exchange gases in their lungs and absorb nutrients in their small intestines. In plants, gas exchange occurs in the leaves. In fish, gas exchange occurs in the gills.
Substances dissolved in water are called soluble. In order to survive, living organisms must be able to exchange dissolved substances with their environment. Surface area and size affect the pace at which this can occur.
Bacteria and other prokaryotic cells replicate by a process known as binary fission. Cells that undergo binary fission make copies of their genetic material, then split into two daughter cells.
Download AQA GCSE Science past exam papers to practice so that you prepare yourself for your final exam.
Download AQA GCSE Religious Studies past exam papers to practice so that you prepare yourself for your final exam.
Download AQA GCSE Physics past exam papers to practice so that you prepare yourself for your final exam.
