Your answer is:
A. mRNA
B. Transcription
C. Translation
D. DNA
E. Polypeptide
<span>E. Stimulation of T-cell by APC</span>
The initial exposure of the body to an infectious agent e.g. through a vaccine, triggers an immune response most of which rapidly diminishes after the vaccination. However some cells of the immune system called lymphocytes remain with a memory of that pathogen.As a result, if the same pathogen infects a vaccinated person, the memory cells remember and recognize it and rapidly spring into action triggering a much more rapid response specific to that pathogen than the initial exposure, effectively dealing and neutralizing the pathogen.
8 molecules would result, since 2^3 = 8. Each time PCR is performed, the orginal number of molcules double.
It should be 3! That is the only logical answer to the question...
This would be animalia (animal cells)!