Biochemistry

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BIOCHEMISTRY

All organisms have cells with DNA in them. Where there is DNA, there is cell replication. All of the organisms have an enzyme-based digestive system. All of the cells contain a nucleus, cell wall, etc. The respiratory systems of the organisms use a gas exchange with O₂ and CO₂. The earthworm in particular uses diffusion to breathe. When the integumentary system of the earthworm is moist, it allows the earthworm to diffuse O₂ and CO₂.All of the organisms perform homeostasis to keep alive. Using glucose or carbohydrates for "fuel". Also supporting the fact on how everything is made up of molecules and atoms. Organisms like the frog or the rat use salivary amylase to help digest and break down foods. Afterwards extracting nutrients like carbohydrates out of the small intestine.