All living organisms have ways of maintaining homeostasis. They have mechanisms for controlling such factors as their internal temperature, water balance, and acidity. Homeostasis is necessary for normal life processes that take place inside cells.
D. Eukaryotic cells It happens in both plant and animal cells
Well, DNA contains the hereditary information in the form of sequences of nucleotides which categorize as genes, that provide the information for synthesis of structural, functional and various other proteins that in combination and or in other ways determine an organism's complex traits. The phenotype of the said organism.