The role of active cytotoxic T cells is to attack . a. body cells that have been infected b. extracellular viruses and bacteria circulating c. antibodies circulating proteins d. complement proteins

16. which of the following accurately describes a step within transcription? a. dna polymerase uses one strand of rna as a template to put together nucleotides. b. the dna strand is used as a template for which a complementary rna strand can be produced. c. the rna strand forms a template by which dna can be built. d. the rna strand is produced within the cytoplasm.