Different enzymes have specific active sites which can only catalyze one <span>substrate. Enzyme-substrate complexes are produced only when the substrate fits into the active site :)</span>
Lithosphere would go with Solid Rock.
Outer Core would go with Liquid Iron.
Inner Core would go with Solid Iron.
Asthenosphere would go with Liquid Rock.
Hope I helped!
I believe proteins would be the correct answer, but of course I just learnt this stuff 2 weeks ago. xD
The mRNA made from the section of DNA coding for the protein (the gene) exits the nucleus through a nuclear pore after getting modified. It can get modified by getting a poly-A tail and a methylated cap, along with removing the interfering sequences (introns).