Transcription means a. Synthesis of RNA from proteins 20. DNA c. DNA contains thymine but RNA contains uracil instead. RNA contains deoxyribose sugar while DNA contains ribose sugar 21. Viral cells contain ribosomes, mitochondria, a coat of protein, and a nucleus b. AIDS, Influenza, and Herpes viruses are examples of bacterial viruses.
Enveloped viruses make their own membranes.