The air you breathe is made of 21% oxygen and 78% nitrogen. the oxygen in air is the and the nitrogen is the a) solution, solute
b) solute, solvent
c) solvent, solution

What does the cell nucleus do or, how does it function?

What type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? view available hint(s) what type of interaction occurs between the r groups of valine and isoleucine in a tertiary structure? salt bridge disulfide bridge hydrogen bond hydrophobic interaction

The atoms of a solid aluminum can are close together, vibrating in a rigid structure. if the can is warmed up on a hot plate, what happens to the atoms?