BIOCHEMISTRY Unit 3 ELEMENTS Canât be broken down 25 essential for humans 96%- C,H,N,O 4%-trace- Fe, I ATOMS Nucleus contains protons and neutrons Proton (+ charge) Neutron…
PowerPoint Presentation Wednesday, October 8th, 2014 – Day 4 Bio.A.S.1.1: Compare and contrast covalent and hydrogen bonds Objective: All living things are based on atoms…