Which of the following are components of the endocrine system? A.
the heart and veins
B.
the brain and nerves
C.
glands and hormones
D.
bones and blood cells

What is the function of reverse transcriptase in retroviruses? a) it uses viral rna as a template for dna synthesis.b) it converts host cell rna into viral dna.c) it translates viral rna into proteins.d) it uses viral rna as a template for making complementary rna strands.