RNA pol III is controlled by three factors (complexes). Two are called "Assembly Factors", and the other is a true "Initiation Factor". The Initiation Factor directly specifies the startpoint for transcription. Which complexes are designated as "Assembly Factors"?

A. TFIIIA and TFIIIB
B. TFIIIA and TFIIIC
C. TFIIIB and TFIIIC
D. UBF1 and SL1

In what for do plants utilize nitrogen? why do they need nitrogen?

2. how does the miller-urey experiment fall short of demonstrating that life can arise from inorganic molecules? explain. a. it doesn't show a leap between a collection of amino acids and a single-celled organism. b. it recreates the conditions that existed at the earth's beginning, but no molecules form as a result. c. it doesn't provide evidence of the formation of amino acids. d. it doesn't show how multicellular organisms developed from unicellular organisms

What are some natural processes that represent physical and chemical changes?