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Science Challenge #4

Question 1.
What is the name of the unit of matter than consists of a nucleus with a positive charge, and a set of electrons that move around the nucleus providing an equal but negative charge?

Question 2.
Approximately what percentage of an average person's body is water: 5% 15% 35% or 55%?

Deoxyribonucleic acid (also known as desoxyribosenucleic acid) is a complex molecule that contains the genetic code for inherited characteristics of a particular species. What initials are commonly used when referring to this molecule?

Extra! - Can you name at least two of the three or four people who are most closely associated with the elucidation of the stucture of the complex molecule described above?

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