The parts of the cell that are common to all eukaryote cells are

The eukaryotic cells all have a true nucleus, and there organelles are enclosed inside the membranes, they also have a plasma membrane. its cytoplasm is composed of both ribosomes and cystol. Protected by there plasma membrane. They also have lysosomes, endoplasmic reticulum, and a golgi apparatus. 

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There are four nitrogenous bases that make up dna. the two pyramidines are thymine and cytosine. the two purines are adenine and guanine. these bases pair in a very specific way. adenine - thymineguanine - cytosine i remember it like this: a tall, good cat.