The most obvious reason why scientists still refer to viruses as non living is that they?

There are seven principle characteristics of living organisms (some say there are ten) that determine whether something is living or not.  Those characteristics are Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, and Nutrition.  The only one of those characteristics exhibited by viruses is Reproduction, but they cannot reproduce on their own.  I virus is nothing more than a packet of genetic code that requires a host cell to complete the processes of replication for it in order to reproduce.  Lacking the other 6 (or 9) characteristics, a virus cannot be considered living.  

the calvin cycle has three stages. in stage 1, the enzyme rubisco incorporates carbon dioxide into an organic molecule. in stage 2, the organic molecule is reduced. in stage 3, rubp, the molecule that starts the cycle, is regenerated so that the cycle can continue

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."