Why were scientists surprised with the actual number of genes they found in the human genome?

scientists were surprised about how much the DNA molecule could do, because they thought that only what type of molecules could give instructions and be copied during cell division?

complex

the solute can move "downhill," from regions of higher to lower concentration, relying on the specificity of the protein carrier to pass through the membrane. this process is called passive transport or facilitated diffusion, and does not require energy.