You are setting up a PCR reaction and have added your forward and reverse oligonucleotide primers, buffer with MgCl2, nucleotides (dNTPs), and Taq polymerase, and possibly water to your PCR tube that you place into the thermocycler. The missing reagent in the reaction is ?

step 1: replication fork formation.

step 2: primer binding.

step 3: elongation.

step 4: termination.

explanation:

hope this !

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

to this answer it would be edge enhancement