The ABCs of DNA — The Cell

What is a Cell?

The simplest organisms are single-celled creatures such as bacteria and algae while more complex organisms, such as humans and trees, are comprised of many cells with specialized functions. Cells consist of membrane bound collections of DNA, proteins, sugars and cytosol –the jelly-like liquid inside the cell. The semi-porous cell membrane controls what enters and exits the cell. Scientists split cells into two main types: prokaryotic cells, such as those comprising bacteria and archae that do not have…
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