Describe the function of one critical enzyme in bacterial cells that is necessary for replicating bacteriophage

Bacteriophages like other viruses, consist primarily of a protein coat and ackaged DNA. Description on the function of critical enzyme; DNA helicase unwinds its two strands and makes a replication fork. The enzyme primase puts down a short RNA strand complementary to a short sequence of DNA being replicated to initiate a new strand of DNA. DNA polymerase elongates the new strand of DNA, building a new anti-parallel strand. 

the glands which are associated with each description is given below:

pancreas - is an endocrine and exocrine gland that secretes juices with enzymes for digestion. salivary glands- with protection and digestion in the mouth. liver- secretes bile for digestion.   lachrymal glands - secrete tears to moisten eyes and protect them from particles and infection.   sweat gland -regulates water, salt, and temperature. oil glands - to form a protective barrier on the skin.   goblet cells - secrete mucus for protection.